Study on Glacial Tourism Exploitation in the Dagu Glacier Scenic Spot Based on the AHP–ASEB Method

: Due to the impact of COVID-19, people’s demand for non-contact tourism is increasing. The development of Internet technologies such as the Internet of Things, virtual reality (VR), and aug-mented reality (AR) can meet this demand. Internet technology makes non-contact tourism grow. However, these new technologies are emerging only within application cases, which cannot provide comprehensive methodological guidance for tourism suppliers. Despite the booming development of winter tourism in China, there are still many problems, especially affecting the tourist experi-ence.rarchy process (AHP) and activity, setting, experience and beneﬁt (ASEB) grid analysis were used to analyze the activities, settings, experiences and beneﬁts of the scenic spot from the tourist perspective taking the Dagu Glacier Scenic Spot (DGSS) as an example. The research aims to increase the attraction of the scenic zone, and promote the coordinated and sustainable development of business in West China under the goal of improving tourists’ experiences. The results show that: subgoals of experience (E) and beneﬁt (B) are the main directions of the development of ice and snow tourism in the DGSS. Furthermore, the threat of beneﬁts (TB), the threat of setting (TS), the threat of experience (TE), the opportunities of beneﬁts (OB), the opportunities of setting (OS), and the opportunities of experience (OE) are the main concerns.


Introduction
Glacier tourism, seeing modern natural resources such as glaciers, alpine snowfields, and glacier relics as the main attraction, observing the sensory, and psychological and spiritual needs of tourists, is an outdoor mountain activity that integrates self-challenge, physical exercises, leisure and entertainment, scientific research, and popular science education, and emotional cultivation [1][2][3]. Ice and snow activities originated in central Europe [4]. It has spread widely all over the world with the prosperity of the modern global economy and the promotion of the Winter Olympic Games. China's ice and snow traveling traditional stems from the first Ice Lantern Garden Fair in Harbin, Heilongjiang in 1963 [4]. China's economic level and residents' living standards have gradually improved after the economic reform and opening-up policies in 1978. After that, winter tourism quickly became popular. Especially since the 2010s, China's winter sports tourism has had a super-high-speed period of development. The number of tourists in China reached 170 million in the ice and snow season from 2016 to 2017, generating RNB 270 billion in revenue. From 2017 to 2018, the scale of sightseers increased to 197 million, and the income are unable to analyze various elements that threaten visitors' experience in-depth, nor can they offer a strategic path to enhance the tourist perception based on quantitative methods. Therefore, this study used the AHP-ASEB analysis method to make up for the shortcomings of the above two analysis methods in order to boost the quality of tourism.
Much related research around the development of glacier resources of the western region has been performed from different angles over the past three years: Wang [23] analyzed the temporal and spatial structure characteristics of Dagu snow tourism and optimization countermeasures; Song [24] studied the layout of tourism space of the Glacier National Geopark by using the example of Yulong Snow Mountain; Ma [25] took the Midui glacier in Tibet as an example to analyze the comprehensive development of glacier tourism resources in China. As a representation of winter tourism in the western region, the Dagu Glacier Scenic Spot (DGSS) reflects the common challenges faced by the western region with the processes of mining and utilization. In view of this, this study selected the DGSS as the research object and used the AHP-ASEB analysis method to make up for the shortcomings of the above two analysis methods. Moreover, the ultimate goal of using AHP-ASEB was to provide an analytical framework and empirical guidance for similar scenic spots in the West.
The remaining sections are organized as follows: Section 2 introduces the location of the research object, snow tourism resources, methodology and data, while the results are given in Section 3; a discussion and the conclusions are presented in Section 4 and Section 5, respectively.

Location
The DGSS is located in the northwest of Heishui County, about 20 km away from Heishui County, and administratively belongs to Aba Tibetan and Qiang Autonomous Prefecture, Sichuan Province. The scenic spot, about 175 km from Maerkang City and 300 km from Chengdu (Figure 1), is bordered by Qinglang Township of Heishui County to the east, Shashiduo Township and Hongyuan County to the west, Luhua Town of Heishui County to the south, and Songpan County to the north. Heishui County located in the northwest of Sichuan Province has transportation connections with western Sichuan and Kangzang, which is an important transportation node for southwest China. In terms of the division of regional functional areas, it belongs to the key areas of Sichuan-Yunnan forest and biodiversity functional areas in the national key ecological functional areas. Moreover, it is the first group of pilot areas of the global tourism strategy determined by the National Tourism Administration. It is one of the provincial "strong rural tourism" counties built in Sichuan Province, and it is also the center of the five major areas in Aba Prefecture. Consequently, its ecological and tourism function are indispensable.

Glacier Tourism Resources
Snow tourism is a kind of tourism that depends on cold climate conditions and ice and snow resources [26]. It has three basic characteristics: snowy natural landscapes and humanistic landscapes are the main attractions; winter sports, snow culture and sightseeing are the main activities; the integrated development of snow sports and tourism is the main model [27]. Natural resources are the material basis of snow tourism; thus, the preservation of natural landscape resources should be the primary concern. In terms of natural landscape resources, the DGSS takes the glacier as the principal natural feature and integrates the natural ecological plateau landscape, Tibetan culture and historical relics of the Red Army revolution as additional interests. The whole scenic area is dominated by glaciers, surface calcification, plateau primitive forests, colored slopes, and plateau lakes. Moreover, it is a blend of Tibetan and Qiang culture, and was also one of the minority areas of the Red Army's Long March. The cultural landscape of the scenic area mainly includes the national pastoral landscape, Tibetan village buildings, residential ancestral halls, and historical relics of the Red Army revolution (Table 1).  ASEB is a consumer-oriented management method that brings tourist experience into the analysis system. It is designed specifically for the problems caused by experiential consumption and is an upgrade of the traditional SWOT analysis [28]. ASEB is a sequential study of sixteen unit elements consisting of row-column crossovers from strength assessments of activities (SA) to threat assessments of Benefits (TB) [29] (Table 2). It can evaluate the four factors (activities, setting, experience and benefits) that affect tourists' feelings from four dimensions (strengths, weaknesses, opportunities, and threats). The method fully considers the consumption experience at all levels and takes the improvement of consumer satisfaction as the final orientation. In addition, it can combine the tourism development with the tourists' subjective perceptions, and afford ways for scenic areas to improve the resultant degree of satisfaction.

Analytic Hierarchy Process
Multi-criteria decision analysis (MCDA), one of the important parts of modern decision analysis theory, can be used to evaluate a series of alternatives on the basis of some irrelevant and inconsistent rules, and is further used to find the optimal plan in decision making [30]. It has been considered as a mathematical tool to guide policymakers to make wise choices based on more diverse factors or even conflicting criteria [31]. MCDA has three important procedures: firstly, to use known alternatives; then, multiple rules are used as the basis for evaluation, and decision makers express their preference information; and finally, arranging the sequence of alternatives. In fact, it allows multiple factors, multiple standards, and even contradictions [32]. Corresponding with MCDA, multi-criteria decision making (MCDM) currently includes at least four popular application methods, such as the Technique for Order Preference by Similarity to an Ideal Solution (TOPSIS) [33], VlseKriterijumska Optimizacija I Kompromisno Resenje (VIKOR) [34], Complex Proportional Assessment (COPRAS) [35] and Preference Ranking Organization Method for Enrichment Evaluation (PROMETHEE) [36].
VIKOR and TOPSIS are based on an aggregation function representing "the closest to the ideal scheme", which originated from the compromise programming method [37]. Their similarities are to measure the advantages and disadvantages of the scheme according to the closeness between the scheme and the ideal result, but the difference is that the best scheme obtained by VIKOR is more likely closest to the ideal, and the best scheme obtained by TOPSIS method is not always close to the ideal scheme from the evaluation results [37,38]. However, they differ mostly in their operational approach to calculating distance and how the two methods consider the concept of proximity to the ideal solutions [39]. The TOPSIS method calculates the shortest distance between the scheme to be evaluated and the ideal solution and the maximum distance of alternatives from the reference elements, but it fails to consider the relative importance of these distances. The VIKOR method determines the preference stability ranking table, commitment solution and weight stability interval of a compromise solution based on the initial or given weight. The method focuses on sorting and selecting a set of alternatives in the presence of conflict standards, and successfully considers the relative importance of the distance between the general and the ideal value.
The COPRAS method, assuming a direct and proportional relationship of the importance of investigated variants on a system of criteria adequately describing the decision variants and values and weights of the criteria, is aimed at improving the overall efficiency of evaluation options [40]. Determining the most important indicators and standards used to assess the priority ranking of programs is an essential part of the COPRAS method. This method focuses on evaluating the order of schemes based on the information of these standards, which is usually applied to the ranking and selection of decision schemes where their relative importance has been shown, and especially considers the ranking of alternatives under conflicting standards [41]. The basic idea of the PROMETHEE method is that decision makers choose criteria or define preference functions according to their preferences. The method uses preference functions and criterion weight coefficients to define the priority degree of the two schemes, and finally use the priority relationship to determine the ranking of schemes [42]. When using the PROMETHEE method, two aspects are indispensable, namely: information on the relative importance of the criteria considered; and information on the decision-makers' preference function, which they use when comparing the contribution of the alternatives in terms of each separate criterion [43]. The similarities between COPRAS and PROMETHEE are that both of them determine the order of schemes according to certain rules. However, COPRAS emphasizes utilization efficiency and indicator standards, while PROMETHEE emphasizes the preference attributes of decision makers.
In general, the above four application methods, with broadly similar analytical frameworks and similar ranking methods, are designed to determine the pros and cons of the sequence between programs and help the decision maker find a solution that best suits their preferences. Their difference is that VIKOR and TOPSIS both determine the order of schemes by measuring the distance between schemes and ideal schemes [39]; in contrast, COPRAS and PROMETHEE emphasize judging the quality of the scheme by defining the index rules or preference functions. It should be pointed out that COPRAS method successfully deals with the dilemma of choice under the conflicting standards. From the perspective of technical characteristics, the above four methods do not assign specific standardizations, which may lead to different results when using different standardization methods [39].
AHP, proposed by Saaty who was a professor at the University of Pittsburgh in the 1970s, can calculate the relative weight of each level of elements and the contribution weight to the goal, and can determine the importance of the underlying elements by constructing the realization factors of the goal according to the correlation and membership relationship to form a hierarchical model [44]. AHP has the advantages of qualitative and quantitative analysis, which can overcome the shortcomings of the relative separation of each element in ASEB and distinguish the relative importance of elements in grid analysis [45][46][47]. The implementation steps of AHP are as follows. Firstly, the total target, secondary target, secondary target elements and schemes according to the elements of ASEB are built. Secondly, the pair judgment matrix of the target layer and scheme layer is established. Thirdly, the consistency test with the Belton-Gear method is conducted and the contribution of the underlying scheme to the overall objective is calculated. Finally, the utilization direction and implementation method in accordance with improved contribution value are selected.
This study aims to decompose the overall goal of ice and snow tourism development under the background of experience economy by the ASEB method and determine the specific development path by the contribution of the decomposed elements to the overall goal. In addition, we are not likely to determine the optimal scheme in advance, nor is it likely to determine the preference function of all tourists in the research process, which is the fundamental reason why we chose AHP combined with ASEB instead of one of the above four methods.

Methods to Cope with Rank Reversal Phenomenon
It is generally agreed that the normalization process of relative weights when using the AHP method is the mathematical cause of rank inverse problems [48]. Different from the problem where the judgment matrix does not meet the consistency rules, the grade reversal phenomenon is a problem of using methods, which is not objective and can be properly handled and solved. At present, the methods to deal with rank reversal appearance are relatively mature, such as replacing standardized weight vector with weight proportion matrix [49], aggregation rules [50], and the AHP two-stage method [51]. The pros and cons of the scheme depend on the degree of satisfaction the scheme brings to decision makers. The essence of scheme ranking is based on the ideal scheme in their minds. The better the scheme, the closer it is to the ideal scheme in the minds of decision makers. As long as the ideal scheme of decision makers remains unchanged, the ranking results should not change actually.
The study uses the maximum weight proposed by Belton and Gear rather than the sum of ownership weights to standardize the weight vector [52]. The method is called B-G method. The formula is: where W = (w 1 , . . . , w n ) T is the eigenvector of the judgment matrix, and W = (w 1 , . . . , w n ) T are the feature vectors normalized by the B-G method.

Data
Twenty experts were invited to participate in this research project, of which five were the operation and management personnel of the DGSS, another five were the operation personnel of similar scenic areas in western China, and the remaining ten were domestic scholars engaged in tourism development. We invited the above experts to fill out a questionnaire about the DGSS through online and field consultation. The questionnaire results of managers and scholars in the above twenty fields were used as the basic data source of this study. In addition, some data of this study came from the internal statistical report of the DGSS and the relevant government planning, which will be specify in the references.

ASEB Grid Analysis Results of the DGSS
According to the ASEB method, the contents of ASEB grid analysis matrix of winter tourism development in the DGSS is presented as flows.
The evaluation results of strengths, weaknesses, opportunities, and threats of activities were as follows: 1. relatively rich snow celebrations and events (SA 1 ); 2. unique Tibetan folk customs and varied folk arts (SA 2 ); 3. repeated natural and cultural landscape natural and cultural landscape (WA 1 ); 4. homogeneous competition with surrounding similar scenic spots (WA 2 ); 5. far from the main source of passenger flows (WA 3 ); 6. tourism product diversity development (OA 1 ); 7. gradual perfection of operational management measures (OA 2 ); 8. rapid progress of winter sports in China (OA 3 ); 9. contradictions between the development of scenic spots and the life of local residents (TA 1 ); 10. contradictions between ecological protection and tourism resources development (TA 2 ); 11. low reputation and brand competitiveness (TA 3 ).
The appraisal results of strengths, weaknesses, opportunities, and threats of benefits were as follows: 1. feeling nature (SB 1 ); 2. the influence of national culture (SB 2 ); 3. understanding local geomorphologic changes (SB 3 ); 4. understanding the difficulties of the ancestors' entrepreneurship (SB 4 ); 5. lack of explanation service (WB 1 ); 6. ticket prices of different channels (WB 2 ); 7. deficient entertainment projects (WB 3 ); 8. marketing promotion (OB 1 ); 9. excavating the Red Army's historical culture and minority cultures (OB 2 ); 10. build the ice and snow brand, implant new media traffic (OB 3 ); 11. cableway fares are higher (TB 1 ); 12. channel ticket pricing is higher (TB 2 ); 13. scenic revenue is less (TB 3 ); 14. restrictions of local government financial investment (TB 4 ). A second-level AHP-ASEB hierarchical structure model with activities (A) as sub-goals was established by taking strength assessment (SA) with threat assessment (TA) of activities as the criterion layer, and by collating SA elements (SA 1 ) to TA elements (TA 3 ) as the program layer. The approach to establishing a sub-goal of setting, experience and benefits is exactly the same as that for establishing an activity sub-goal. Based on the above process, the AHP-ASEB comprehensive hierarchical model for the development of ice and snow tourism in the DGSS was established. (Figure 2).

Constructing a Comparison Matrix
According to the Delphi method and scoring data of experts and operators, the criterion layer judgment matrix (T *) is founded by a 1-9 scale method [53] and establishing a judgment matrix (A * to B *) for the comprehensive assessment of activities, setting, experience and benefits. A judgment matrix (SA * to TB *) relating the programs of SA to the programs of TB was created.

Consistency Check
In this study, the consistency ratio is defined as follows: where RI is the introduced random consistency index, and CI is the consistency indicator obtained by maximum eigenvalues of the matrix. The degree of inconsistency of the judgment matrix is within the allowable range where it is generally considered to be CR < 0.1; when CR > 0.1, it is considered that the degree of inconsistency of judgment matrix is not within the allowable range [54].
AHP is used to analyze the judgment matrix, and we compute the weight and contribution to the target in the hierarchy model (Appendix A). The judgment matrix conforms to the consistency check rule after verification, and the degree of inconsistency is also within the satisfactory range.

Weight Analysis Results of AHP-ASEB for the DGSS
In the hierarchical model of the total target, the calculated value obtained by multiplying the weight of the scheme layer by the weight of the corresponding criterion layer is the weight of the scheme layer to the total target. (Table 3). In the hierarchical model of four sub-goals, the calculated value obtained by multiplying the weight of scheme layer by the weight of criterion layer is the contribution value of the scheme layer to sub-goals. (Table 4). The sub-goal scheme layer is regarded as the underlying scheme. The value obtained by multiplying the weight of the underlying scheme by the weight of the criterion layer of the corresponding sub-goal and multiplying the weight of the corresponding total goal is the contribution value of the underlying scheme to the total goal. Group A, group S, group E, and group B are the top three, the top three, the top five and the top five contribution values, respectively, according to the contribution value from large to small. (Table 5).

Discussion
This paper provides a basic and enforceable methodological system for similar scenic spots. The research method could be used to calculate and obtain development countermeasures suitable for the positioning and characteristics of other scenic spots according to the steps. The reason for choosing the AHP method is that the combination of AHP and ASEB can better decompose the factors affecting the tourist experience. Methods such as TOPSIS, VIKOR, and COPRAS can also be applied to the decision-making process, which will be used for more objective comparative study in follow-up research.
The scenic area operator is the supply side of ice and snow tourism, and tourists are the demand side of the tourism. From the comparative research perspective, most domestic research only stands on the position of the scenic operators, and only considers the supply factors. Meanwhile, the majority of the relevant research aims at guiding the scenic area operators as to how to organize and carry out scenic construction and tourism activities from top to bottom. However, some researchers do not specifically incorporate the demand side factors into the whole development process, resulting in many problems, as mentioned before. The problems have seriously reduced tourists' satisfaction and goodwill towards scenic spots, and also seriously affected the sustainable development of scenic spots. This paper has not only decomposed the factors affecting the demand side in detail, but also incorporate the factors affecting the demand side into the development process of scenic spots. ly when the supply and demand match well can the supply side realize the value transformation. Therefore, the improved the research angle of the study provides a different perspective from the traditional research, which not only helps to optimize the development strategies and behaviors of tourism suppliers from the tourism demand side, but also helps the scenic area operators to accurately grasp the changes in tourist demand.
Most studies adopt a combination of AHP and SWOT. As mentioned above, SWOT analysis fails to consider the experience of tourists, which is the inherent defect of the method. However, more detrimental is that most of the domestic research does not consider the inherent shortcomings of the AHP method when using the tool. The AHP method has at least three shortcomings. Firstly, there may be a phenomenon of rank reversal, which may be the biggest defect of AHP. Secondly, hierarchy analysis assumes that the decision-making layers are independent of each other, and only considers the one-way relationship between the decision-making layers; that is, the influence of the lower layer to the upper layer [55,56]; Thirdly, the interactions within the decision-making hierarchy are not considered [57]. There are two improvements proposed in the study. Firstly, in order to investigate the demand side factors more carefully, we used the ASEB method rather than the SWOT method; Secondly, the rank reversal phenomenon in the AHP method may lead to our previous work becoming meaningless. Therefore, we adopted a method of combining improved AHP and ASEB methods. Specifically, the ASEB category is fixed, inducing a fixed intermediate criterion layer. However, the phenomenon of grade reversal may still exist in the bottom schemes. In order to overcome the rank reversal caused by the change of the underlying scheme, we synthesized the relevant research results and used the B-G method to avoid this phenomenon.
This paper indicates that the assessment of environmental opportunities (OS) and the assessment of environmental challenges (TS) play an indispensable role in improving tourist experience. Although it agrees with empirical intuition and conforms with most domestic research findings, this study further indicates that the national and local governments' ice and snow tourism development plans (OS 1 ) and the substitution effect of similar scenic spots in the peak season of snow tourism (TS 4 ) play a far greater role in the development of scenic spots with the goal of improving tourist satisfaction than other aspects of environmental factors, especially the mutual competition and substitution effect of similar scenic spots, which is ignored by most studies. Competition between similar scenic spots and their alternative utility has suggested to scenic operators that the homogenization of development strategies is undesirable. In other words, only by fully exploiting the characteristics of their own resources and differentiating competition can it be possible to succeed. In addition, this paper further reveals the importance of the assessment of opportunities for benefits (OB), the assessment of threats to benefits (TB), the assessment of opportunities for experience (OE) and the assessment of threats to experience (TE) in the development of snow tourist attractions. More accurately, the results further suggest that the lack of tourism product selling points (TE 3 ), the construction of a talent team (OE 1 ) and the excavation of cultural heritage sites (OB 2 ), and a single source of income in scenic spots (TB 4 ) have very close contributions to the overall goal, and their contribution to the overall goal is more than 0.05 according to our research. Compared with other domestic studies, we are convinced that human capital investment in the development of scenic spots deserves much more attention than it has previously received.
AI, AR, VR and loT have gradually become more popular in recent years, and their contributions to promoting the development of tourism are also increasing. However, these technologies are for technical application; they are not methodologies that have a general guiding role. This study aims to provide a universally applicable methodology for ice and snow tourism suppliers. The relationship between the above techniques and the methods we use are as follows: The techniques can be used as specific content of OE or SE to improve the experience of tourists. On the other hand, this study shows that E and B are the main direction of ice and snow tourism development in scenic spots, which shows that the conclusion of the study is highly consistent with the above technology in improving the tourist experience. In OE 3 , we elaborated the importance of constructing an information platform for the development and operation of scenic spots. In fact, the technology mentioned above can be incorporated into the process of creating an information system for scenic spots as an application case, so as to further improve the ability of tourism suppliers to meet the needs of tourists and respond to external shocks.
The ASEB method, in fact, has relatively few limitations in evaluating tourist experience. Its disadvantage is that the scope is relatively wide, causing a small degree of correlation factors to consider, ignoring other more important factors. There are many factors influencing tourist experience. For example, Zeng [58] maintains that climate comfort is an important factor affecting tourist destination experience in related studies; Zhang [59] suggests that the linear layout of tourism industry is an important reason affecting tourism experience; Xie [60] analyzed the different categories of the concept of body and proposed that tourism experience is actually strictly dependent on the concept of body. Therefore, the conclusions obtained by the ASEB method may be biased. In addition, we failed to avoid the interference of human factors in the scoring process and ignored the impact of COVID-19. More importantly, the interaction between the criterion layer and the scheme layer have not been inspected, although this is one of the shortcomings of the AHP method itself. This aspect will be the direction of our next work.

Conclusions
This study selected sixteen grid elements and fifty-two decomposition elements corresponding to 16 grid elements from four aspects of activities (A), settings (S), experiences (E) and benefits (B), and used the AHP-ASEB process to establish a quantitative analysis framework of the underlying scheme under the condition of considering tourists' perception. The following conclusions were reached: