Spatial pattern and mechanisms of farmland abandonment in Agricultural and Pastoral Areas of Qingzang Plateau
作者机构：State Key Laboratory of Earth Surface Processes and Resource EcologyBeijing Normal UniversityBeijing 100875China School of Natural ResourcesFaculty of Geographical ScienceBeijing Normal UniversityBeijing 100875China National Geomatics Center of ChinaBeijing 100830China
出 版 物：《Geography and Sustainability》 (地理学与可持续性（英文）)
年 卷 期：2021年第2卷第3期
页 面：139-150页
学科分类：090503[农学-草业科学] 0909[农学-草学] 0905[农学-畜牧学] 09[农学] 0903[农学-农业资源与环境]
基 金：This research was supported by the National Social Science Fund of China(Grant No.20&ZD090) the Second Tibetan Plateau Scientific Expedition and Research Program(Grant No.2019QZKK0405) the Na-tional Natural Science Foundation of China(Grant No.42071249,Grant No.42001199)
主 题：Farmland abandonment Spatial pattern Formation mechanism Geographically weighted regression Qingzang Plateau,Agricultural and pastoral areas
摘 要：With the rapid development of social economy and urban−rural integration,the phenomenon of farmland aban-donment worldwide has proved to be one of the main trends of land use and land cover change(LUCC),and profoundly affected the rural landscape and regional ecological *** by the natural environ-ment,economic development and backward agricultural technology,the phenomenon of farmland abandonment is also common in the Qingzang Plateau(QP).Therefore,this paper adopted the spatial autocorrelation method to analyze the spatial pattern of abandonment in the agricultural and pastoral areas of the Qingzang Plateau(APA−QP)in 2017,and the geographically weighted regression(GWR)model to explore the effects of geograph-ical resources,socio-economic development and location conditions on farmland *** study found that:1)From 2015 to 2017,the abandoned farmland area in the APA−QP was approximately 18.23×10^(4)ha,with an overall abandonment rate of 15.18%.On the whole,it showed the distribution characteristics of“strong in the south and weak in the north,strong in the east and weak in the west.2)There were positive spatial correlation between both abandoned area and abandonment rate in the APA−QP,showing“concaveand“convexpatterns,respectively,mainly concentrated in the Huang−shui Valley and the Southeast Tibet;while in the western and northern regions,the degree of abandonment was relatively low.3)Farmland abandonment in the APA−QP was mainly driven by the geographical environment changes and farmers’decision−making on farmland *** was significant spatial heterogeneity on farmland abandonment associated with the impact of geographical resources,socio−economics and location *** geographical resource factors had a positive impact on the abandonment,and were strongly constrained by natural geographic conditions such as altitude and *** farmland resources in the Qingzang Plateau are limited,but are of strategic signifi
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