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Article

A Spatial-Temporal Analysis of the Effects of Households’ Land-use Behaviors on Soil Available Potassium in Cropland: A Case Study from Urban Peripheral Region in Northeast China

1
College of Land and Environment, Shenyang Agricultural University, Shenyang 110866, China
2
Leibniz Institute of Agricultural Development in Transition Economies (IAMO), 06120 Halle (Saale), Germany
3
Jiangxi Economic Development Research Institute, College of Finance, Jiangxi Normal University, Nanchang 330022, China
4
College of Public Administration, Nanjing Agricultural University, Nanjing 210095, China
*
Author to whom correspondence should be addressed.
Land 2020, 9(5), 160; https://doi.org/10.3390/land9050160
Received: 17 April 2020 / Revised: 18 May 2020 / Accepted: 19 May 2020 / Published: 20 May 2020
(This article belongs to the Special Issue Soil Management for Sustainability)
Available potassium (AVK) in the soil of cropland is one of the most important factors determining soil quality and agricultural productivity. Thus, it is crucial to understand the variation of AVK and its influencing factors for sustaining soil fertility and mitigating land degradation. Farm households are the ultimate land users, and their land-use behaviors inevitably play an important role in the variation of AVK. This paper, therefore, aims to explore the effects of households’ land-use behaviors on soil AVK from spatial and temporal perspectives. Taking an urban peripheral region in Northeast China as the study area, we firstly use geostatistics (Kriging interpolation) and GIS tools to map out the spatial AVK distributions in 1980, 2000, and 2010, based on soil sampling data points, and then assess the impacts of land-use behaviors on AVK using econometric models. The results show that, although the AVK content in the study area has a largely downward trend over the 30 years, there are distinct trends in different stages. The disparity of trends can be attributed to the changes in households’ land-use behaviors over time. The spatial variation of AVK is also substantial and intriguing: the closer to the urban area, the greater the decline of soil AVK content, while the farther away from the urban area, the greater the rise of soil AVK content. This spatial disparity can too be largely explained by the obvious differences in households’ land-use behaviors in various regions. View Full-Text
Keywords: soil available potassium; land-use behavior; spatial-temporal analysis; soil quality; Kriging interpolation soil available potassium; land-use behavior; spatial-temporal analysis; soil quality; Kriging interpolation
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MDPI and ACS Style

Liu, H.; Sun, Z.; Luo, X.; Dong, X.; Wu, M. A Spatial-Temporal Analysis of the Effects of Households’ Land-use Behaviors on Soil Available Potassium in Cropland: A Case Study from Urban Peripheral Region in Northeast China. Land 2020, 9, 160. https://doi.org/10.3390/land9050160

AMA Style

Liu H, Sun Z, Luo X, Dong X, Wu M. A Spatial-Temporal Analysis of the Effects of Households’ Land-use Behaviors on Soil Available Potassium in Cropland: A Case Study from Urban Peripheral Region in Northeast China. Land. 2020; 9(5):160. https://doi.org/10.3390/land9050160

Chicago/Turabian Style

Liu, Hongbin, Zhanli Sun, Xiaojuan Luo, Xiuru Dong, and Mengyao Wu. 2020. "A Spatial-Temporal Analysis of the Effects of Households’ Land-use Behaviors on Soil Available Potassium in Cropland: A Case Study from Urban Peripheral Region in Northeast China" Land 9, no. 5: 160. https://doi.org/10.3390/land9050160

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