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Land Degradation Evaluation, Alleviation, and Restoration in Watersheds

A topical collection in Sustainability (ISSN 2071-1050). This collection belongs to the section "Soil Conservation and Sustainability".

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Editor


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Guest Editor
Department of Soil and Water Conservation, National Chung Hsing University, Taichung City 402, Taiwan
Interests: soil physics; soil erosion; sediment transport; land degradation; watershed environmental assessment;
Special Issues, Collections and Topics in MDPI journals

Topical Collection Information

Dear Colleagues, 

Land degradation is one of the major types of environmental degradation all over the world. During the processes of land degradation, soil erosion leads to the decline of organic matter and nutrients in the soil system, salinization, compaction, biodiversity loss, and eventually land desertification. Subjected to the changes in climate and land use/land cover, processes of land degradation in watersheds also have an impact on the ecosystem services in the provisioning, supporting, and regulating aspects. In this Special Issue, we focus on the phenomena and managing measures of land degradation at the regional scale. Studies submitted to the Special Issue should fit into the scope of investigation, evaluation, alleviation, and restoration of ecosystem services and land degradation in watersheds. The purposes are illustrating the intercorrelations and proposing the historical, current, and/or future conditions of land degradation and ecosystem service variation, under scenarios of different land use/land cover and climate change, as the knowledge base for pursuing sustainable land management, combating desertification, and halting and reversing land degradation. Original research and technical notes that include but are not limited to the following topics are welcome:

  • Data collection, field investigation, and evaluation of the evidence of land degradation;
  • Illustration and quantification of the relationship between ecosystem services and land degradation;
  • Assessing tools and models of land degradation and ecosystem services;
  • Simulation of land degradation and ecosystem services with land management scenarios;
  • Simulation of land degradation and ecosystem services with climate change scenarios;
  • Engineering methods and managing strategies to halt, alleviate, and reverse land degradation.

Prof. Dr. Yung-Chieh Wang
Guest Editor

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Keywords

  • desertification
  • soil erosion
  • ecosystem services
  • land use/land cover
  • land management
  • forestation
  • environmental footprint
  • climate change
  • Sustainable Development Goals

Published Papers (1 paper)

2022

17 pages, 3418 KiB  
Article
A Case Study of Initial Vegetation Restoration Affecting the Occurrence Characteristics of Phosphorus in Karst Geomorphology in Southwest China
by Yunjie Wu, Xin Tian, Mingyi Zhang, Runze Wang and Shuo Wang
Sustainability 2022, 14(19), 12277; https://doi.org/10.3390/su141912277 - 27 Sep 2022
Cited by 7 | Viewed by 1430
Abstract
Phosphorus (P) is one of the necessary nutrient elements in the process of plant growth and development. The temporal and spatial distribution characteristics of phosphorus content can not only reflect the soil structure and availability, but also affect the growth of wetland vegetation, [...] Read more.
Phosphorus (P) is one of the necessary nutrient elements in the process of plant growth and development. The temporal and spatial distribution characteristics of phosphorus content can not only reflect the soil structure and availability, but also affect the growth of wetland vegetation, the formation of the environment, and the process of vegetation succession. In this paper, taking Guizhou Caohai Nature Reserve as the research object, the temporal and spatial substitution method was used to study the distribution and influencing factors of soil total phosphorus (TP) and soil available phosphorus (AP) under different geomorphological environments (non-karst landforms, karst landforms, and geomorphology after vegetation restoration (5 years)). The results showed that (1) the TP content in the topsoil of the restored vegetation landform was generally higher than that in the topsoil of the karst landform and non-karst landform, and the distribution difference of the AP content in the three areas was slight. At the top, hillside, and foot of the mountain, the contents of TP and AP in the non-karst landform and karst landform decreased with increasing soil depth and accumulated at the foot of the mountain. (2) The results of the correlation analysis showed that the interpretation rates of TP and AP by each soil physicochemical factor were the highest, reaching 64–86%, while the interpretation rate of TP and AP by the combined action of multiple physicochemical factors was relatively small; in addition, there was a significant correlation between environmental factors and soil TP and AP (p < 0.05). (3) Compared with unrepaired karst landforms, in the process of vegetation restoration (5 years), TP content has convergence between geomorphology after vegetation restoration and non-karst landforms, while AP content fluctuates greatly. The analysis showed that the changes in soil TP and AP contents were mainly affected by vegetation communities, while the changes in soil TP and AP contents in mountain areas were also affected by soil organic matter, pH, soil particle size, and climatic conditions. Full article
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