地理科学进展 ›› 2018, Vol. 37 ›› Issue (12): 1682-1692.doi: 10.18306/dlkxjz.2018.12.010

• 研究论文 • 上一篇    下一篇

基于PSR框架的内蒙古自治区沙漠化敏感性评估

田璐1,2(), 邱思静1, 彭建1,2,*(), 胡熠娜1, 贾靖雷1,2, 毛祺1   

  1. 1. 北京大学城市与环境学院地表过程分析与模拟教育部重点实验室,北京 100871
    2. 北京大学深圳研究生院城市规划与设计学院城市人居环境科学与技术重点实验室,广东 深圳 518055
  • 收稿日期:2017-09-19 修回日期:2018-10-11 出版日期:2018-12-28 发布日期:2018-12-28
  • 通讯作者: 彭建 E-mail:18604236913@163.com;jianpeng@urban.pku.edu.cn
  • 作者简介:

    作者简介:田璐(1994-),女,辽宁抚顺人,硕士研究生,研究方向为综合自然地理和景观生态,E-mail: 18604236913@163.com

  • 基金资助:
    国土资源部公益性行业科研专项(201511001-01)[Foundation: Commonwealth Project of the Ministry of Land and Resources of China, No.201511001-01]

Desertification sensitivity evaluation in Inner Mongolia Autonomous Region based on PSR framework

Lu TIAN1,2(), Sijing QIU1, Jian PENG1,2,*(), Yina HU1, Jinglei JIA1,2, Qi MAO1   

  1. 1. Ministry of Education Laboratory for Earth Surface Processes, College of Urban and Environmental Sciences, Peking University, Beijing 100871, China
    2. Key Laboratory for Environmental and Urban Sciences, School of Urban Planning and Design, Shenzhen Graduate School, Peking University, Shenzhen 518055, Guangdong, China
  • Received:2017-09-19 Revised:2018-10-11 Online:2018-12-28 Published:2018-12-28
  • Contact: Jian PENG E-mail:18604236913@163.com;jianpeng@urban.pku.edu.cn

摘要:

沙漠化敏感性是测度区域沙漠化可能性的关键指标。鉴于沙漠化敏感性研究“重评价、缺框架”、“重格局、轻变化”的研究现状,本文基于“压力—状态—响应”(Pressure-State-Response, PSR)分析框架,构建了“气候条件—地表覆盖—植被恢复”沙漠化敏感性综合评价指标体系,定量评估了2000、2015年内蒙古自治区(除流动沙地(丘)外)沙漠化敏感性,结合县域人口密度开展了区域沙漠化防治分区。研究结果表明:2015年研究区以中度敏感区为主(27.04%),其次为轻度敏感区(25.53%)、不敏感区(22.96%)和高度敏感区(20.82%),极敏感区占比最小(3.65%),沙漠化敏感性呈现出中西部高、东部低的空间格局;2000-2015年间,内蒙古自治区9.20%的土地沙漠化敏感性等级降低,24.83%则趋于增强。研究区可划分为生态保育区、沙化治理区、综合发展区和生态移民区四大沙漠化防治区。

关键词: 沙漠化敏感性, PSR框架, 防治分区, 内蒙古自治区

Abstract:

Desertification sensitivity is a key indicator for detecting the probability of desertification, and its assessment is of great importance for desertification control. Previous studies assessed regional desertification sensitivity without a unified framework, and many studies only focused on the spatial patterns of desertification sensitivity but ignored the temporal dynamics. Thus, this study aimed to develop an index system to assess desertification sensitivity based on the framework of pressure-state-response (PSR) from three aspectsclimatic conditions, land cover, and vegetation restoration. It took Inner Mongolia Autonomous Region as the study area (excluding mobile sand dune areas), with a study period from 2000 to 2015. Desertification control zoning was also carried out by combining desertification sensitivity and population density analyses at the county level. The results show that, in view of the spatial patterns, desertification sensitivity in 2015 was higher in the central and western parts of the study area, and lower in the east. Desertification sensitivity in 2015 was classified using natural break point method. The moderate sensitivity zone (27.04%) accounted for the largest proportion of the study area, followed by low sensitivity zone (25.53%), no sensitivity zone (22.96%), high sensitivity zone (20.82%), and extreme sensitivity zone (3.65%) in descending order. The temporal dynamics during 2000-2015 in the study area showed that 9.20% of the study area experienced decreasing desertification sensitivity, and 24.83% of the study area experienced increasing desertification sensitivity. Finally, the study area was divided into four desertification control zones, that is, ecological conservation zone, desertification control zone, comprehensive development zone, and ecological migration zone.

Key words: desertification sensitivity, PSR framework, control zone, Inner Mongolia Autonomous Region