干旱区地理2025，Vol.48Issue(4)：661-672,12.DOI:10.12118/j.issn.1000-6060.2024.390
1964-2020年毛乌素沙地新垦耕地和弃耕地空间格局变化及其对荒漠化的影响
Changes in the spatial pattern of newly cultivated and abandoned farmland in the Mu Us Sandy Land from 1964 to 2020 and their impact on desertification
摘要
Abstract
The Mu Us Sandy Land,located in the agro-pastoral ecotone of northern China,has a fragile ecologi-cal environment highly susceptible to agricultural development.This study employs long-term multivariate re-mote sensing data to analyze the spatio-temporal patterns of newly cultivated and abandoned farmland in the re-gion from 1964 to 2020 and their subsequent impacts on desertification.The results indicate that(1)From 1964 to 2020,changes in the area of newly cultivated and abandoned farmland in the Mu Us Sandy Land can be catego-rized into three stages.Between 1964 and 1986,the extent of both newly cultivated and abandoned farmland was relatively high,with abandoned farmland significantly exceeding other periods.The average annual abandoned farmland area was 2.89 times that of 1986-2020,and newly cultivated farmland in pastoral areas was notably greater than that in agricultural areas.Between 1986 and 2007,both newly cultivated and abandoned farmland re-mained relatively low and stable,with newly cultivated farmland slightly exceeding abandoned farmland.From 2007 to 2020,the area of newly cultivated farmland expanded rapidly,with an average annual increase 3.24 times that of 1964-2007,while the abandoned farmland area remained relatively low.(2)Significant spatial and tem-poral differences exist between newly cultivated and abandoned farmland.From 1964 to 1986,newly cultivated farmland hotspots were widely distributed in the pastoral areas of central and western Mu Us Sandy Land.Be-tween 1971 and 1986,a few concentrated cultivation hotspots emerged in the agricultural areas of eastern Mu Us Sandy Land.From 2007 to 2020,newly cultivated farmland hotspots were mainly concentrated in the east,cen-tral agricultural areas,and the southern region.(3)Between 1964 and 1986,large-scale farmland cultivation and abandonment,driven by policy factors,led to severe land desertification in the Mu Us Sandy Land.The area of fixed sandy land surrounding abandoned farmland decreased by 99.9%,while the area of shifting sandy land in-creased by 358.2%.From 2007 to 2020,no significant trend of desertification was observed around newly culti-vated farmland;however,the degree of desertification surrounding newly cultivated farmland showed an increas-ing trend.Future agricultural and animal husbandry management policies,as well as desertification prevention and control plans,should carefully balance agricultural development with the preservation of fragile sandy eco-systems.Additionally,attention should be given to the potential desertification risks associated with land reclama-tion and abandonment.关键词
新垦耕地/弃耕地/时空格局/荒漠化/毛乌素沙地Key words
newly cultivated farmland/abandoned farmland/spatio-temporal pattern/desertification/Mu Us Sandy Land引用本文复制引用
费兵强,吴波,殷婕,董春媛,马慧榕,修晓敏,贾晓红,庞营军,张平..1964-2020年毛乌素沙地新垦耕地和弃耕地空间格局变化及其对荒漠化的影响[J].干旱区地理,2025,48(4):661-672,12.基金项目
国家重点研发计划项目(2023YFF1305300) （2023YFF1305300）
国家自然科学基金项目(42371074) （42371074）
中国林业科学研究院基本科研业务费专项(CAFYBB2023MB017)资助 （CAFYBB2023MB017）
