1986—2015年鄂尔多斯高原沙漠化及其驱动因素研究

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  • 陕西师范大学西北历史环境与经济社会发展研究院,陕西 西安710119
白壮壮(1994-),男,硕士研究生,研究方向为历史环境变迁与重建. E-mail: baizz@snnu.edu.cn

网络出版日期: 2020-06-18

基金资助

科技部基础资源调查专项(2017FY101002);国家自然科学基金项目(41571190)资助

Desertification and its driving factors in the Ordos Plateau,from 1986 to 2015

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  • (Northwest Institute of Historical Environment and SocioEconomic Development,Shaanxi Normal University, Xi’an 710119,Shaanxi,China)

Online published: 2020-06-18

摘要

本文以1986—2015年Landsat卫星影像为基础,利用多元线性逐步回归分析法,综合气候数据、人类活动数据建立模型,探讨30 a来鄂尔多斯高原沙漠化过程及其驱动因素。研究结果表明:① 1986—2015年鄂尔多斯高原沙漠化总体呈逆转趋势,并以2000年为转折点分为两个发展阶段:1986—2000年鄂尔多斯高原沙漠化面积维持在较高水平,尤其是高原西部、南部沙漠化较为严重;2001—2015年沙漠化面积在波动中逐渐减少,减少区域集中在高原东部、南部,但2012年以后高原西部沙漠化面积又有轻微增长趋势。② 年降水量与乡村人口数量是影响鄂尔多斯高原沙漠化过程最主要的驱动因素,其中降水量又与沙漠化关系最为密切,其他因素与沙漠化关系并不显著。

本文引用格式

白壮壮, 崔建新, 丁晓辉 . 1986—2015年鄂尔多斯高原沙漠化及其驱动因素研究[J]. 干旱区研究, 2020 , 37(3) : 749 . DOI: 10.13866/j.azr.2020.03.24

Abstract

The Ordos Plateau is a typical area undergoing desertification in China.The desert areas of the Ordos Plateau between 1986 and 2015 were derived from remote sensing analysis and relationships between desertification area and potential driving factors,including climate and human activity,were analyzed using multivariate linear stepwise regression analysis.The results show that: (1) The year 2000 was the turning point at which the desertification of the Ordos Plateau first increased and then decreased.From 1986 to 2000,the Ordos Plateau showed general desertification expansion,especially in the west and south; during 2001-2015,the desertification area gradually decreased,with reduction mostly occurring in the eastern and southern parts of the plateau.After 2012,desert areas increasingly developed in the western part of the plateau.(2) Among the driving factors influencing the desertification of the Ordos Plateau,precipitation and population are the most significant,with precipitation being most closely related to desertification.Other factors show no significant relation to desertification.From 1986 to 2015,increased precipitation contributed to the reversal of desertification,while the rise of rural population accelerated the desertification process.

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