江西省社会经济因素对区域土壤侵蚀的影响  

Impacts of Socioeconomic Factors on Regional Soil Erosion in Jiangxi Province

作　　者：黄栋 杨小唤[2,3] 蔡红艳 Huang Dong;Yang Xiaohuan;Cai Hongyan(Marine Economics and Sustainable Development Research Center,Liaoning Normal University,Dalian,Liaoning 116029,China;State Key Laboratory of Resources and Environmental Information System,Institute of Geographic Sciences and Natural Resources Research,CAS,Beijing 100101,China;University of Chinese Academy of Sciences,Beijing 100049,China)

机构地区：[1]辽宁师范大学海洋经济与可持续发展研究中心,中国辽宁大连116029 [2]中国科学院地理科学与资源研究所资源环境信息系统国家重点实验室,北京100101 [3]中国科学院大学,北京100049

出　　处：《水土保持通报》2020年第3期110-117,I0001,共9页Bulletin of Soil and Water Conservation

基　　金：国家自然科学基金项目“区域土壤侵蚀变化的人类活动影响量化方法研究”(41771460);中国科学院战略性先导科技专项(A类)(XDA20010203)。

摘　　要：[目的]探索1990—2015年江西省社会经济因素对区域土壤侵蚀的影响特征,为区域土壤侵蚀防治管理提供数据基础和科学参考。[方法]采用区域特征化的通用土壤流失方程(RUSLE)模拟江西省土壤侵蚀空间分布,以设区市为基本单元构建社会经济影响因素指标体系(包括4类一级指标和21个二级指标),基于灰色关联分析获取1990,2000,2015年各指标对区域土壤侵蚀的影响程度。[结果]1990,2000,2015年,江西省平均土壤侵蚀模数明显下降,分别为864,663,281 t/(km^2·a);1990—2015年,社会经济因素与区域土壤侵蚀的关联度总体呈增加趋势;不同时相下各社会经济因素与区域土壤侵蚀的关联度排序呈动态变化。[结论]1990—2015年,江西省土壤侵蚀状况显著改善,随着江西省社会经济发展,总体来看各个社会经济因素对区域土壤侵蚀影响程度明显提高,其中农村发展状况,尤其是坡耕地的影响最为显著,人口水平的影响程度明显增加,生态保护的重要性逐步凸显。[Objective]The impacts of socioeconomic factors on soil erosion during 1990—2015 in Jiangxi Province were studied to provide a scientific basis for prevention and control of soil erosion according to regional development needs.[Methods]The spatial distribution of regional soil erosion obtained through the localized revised universal soil loss equation model was simulated.Subsequently,a socioeconomic indicator system based on the city unit(including four first-level indicators and 21 second-level indicators)was built.The impacts on soil erosion in 1999,2000,and 2015 were identified by using the method of grey relational analysis.[Results]The average soil erosion modulus of regional soil erosion decreased.The values were 864,663,and 281 t/(km^2·a)in 1990,2000,and 2015,respectively.From 1990 to 2015,the grey relational degree of socioeconomic factors and regional soil erosion showed an overall increasing trend,and the order of the indicators was dynamically changing.[Conclusion]From 1990 to 2015,the regional soil erosion in Jiangxi Province showed evident improvement.The impacts of socioeconomic factors on regional soil erosion were strengthened with social development.Rural development had a remarkable effect,especially for slope farmland.The importance of population level increased noticeably,and the impacts of the ecological conservation factors improved gradually.

关 键 词：区域尺度 社会经济因素 土壤侵蚀 灰色关联分析 江西省 

分 类 号：S157.1[农业科学—土壤学] K902[农业科学—农业基础科学]