江西吉泰盆地荒漠化时空变化特征及影响因素分析  

Spatial-temporal Evolution Characteristics and Influencing Factors of Land Desertification in Jitai Basin,Jiangxi Province

作　　者：汪震 姜勇彪[1,2] 岳兵 WANG Zhen;JIANG Yong-biao;YUE Bing(School of Earth Sciences, East China University of Technology, Nanchang 330013, China;Key Laboratory for Digital Land and Resources of Jiangxi Province, Nanchang 330013, China)

机构地区：[1]东华理工大学地球科学学院,江西南昌330013 [2]江西省数字国土重点实验室,江西南昌330013

出　　处：《东华理工大学学报（自然科学版）》2021年第2期150-155,共6页Journal of East China University of Technology(Natural Science)

基　　金：江西省教育厅科学技术研究项目(GJJ160534);江西省数字国土重点实验室开放基金项目(DLLJ201707)。

摘　　要：吉泰盆地位于南方湿润区,由于自然和人为等因素,盆地内出现了荒漠化的现象,其受关注较少。通过实地调查结合遥感影像构建NDVI-Albedo特征空间,并通过趋势分析和相关性分析法对吉泰盆地荒漠化变化及其影响因素进行分析。研究表明,吉泰盆地内荒漠化面积在近15年内呈现减少趋势,在沿江、靠近城市地区荒漠化有斑点状的增长趋势;降水在某些点与荒漠化呈现正相关,能够使荒漠化发生,但总体上对荒漠化有扼制作用;人类活动对荒漠化在城区地区呈负相关关系,使荒漠化呈减少趋势,在城市边缘呈正相关关系,加剧荒漠化。The Jitai basin is located in the humid area of South China.Because of natural and man-made factors,the phenomenon of desertification occurred in the basin,which is paid less attention.The NDVI-Albedo feature space is constructed by field investigation and remote sensing image.Moreover,the space-time variation and its influencing factors of desertification are analyzed by trend analysis and correlation analysis.The results show that the area of desertification in Jitai basin has been decreasing in the past 15 years,and the area along the river and near the city has a spotty increasing trend.In addition,precipitation has a positive correlation with desertification at some points,which can make desertification happen,but it has a restraining effect on desertification as a whole.Human activities have a negative correlation with desertification in urban areas,which leads to a decreasing trend of desertification,and have a positive correlation in urban fringe,which aggravates desertification.

关 键 词：红层荒漠化 荒漠化差值指数 趋势分析 相关性分析 吉泰盆地 

分 类 号：P931[天文地球—自然地理学]