摘要
生态敏感性评价是研判国土空间生态状况、识别各类生态保护空间的重要基础。本文在1 km×1 km空间网格尺度上,开展内蒙古自治区1980、1990、2000、2010、2020年土地沙化生态敏感性时空演变特征研究。结果表明:①土地沙化敏感性等级呈现东部较低,西部、正北较高的格局;②38.3%网格敏感性等级保持不变,37.9%网格保持在中度敏感以下,38.8%网格保持在中度敏感以上;③大兴安岭北段山区、呼伦贝尔草原北部、西辽河平原、河套-土默川平原及鄂尔多斯高原东部与南部敏感性等级较低或持续降低,阿拉善高原、浑善达克沙地北部部分地区敏感性等级较高或持续提高。本文可为划定生态空间及制定相关政策提供科学方法与空间依据。
Ecological sensitivity evaluation is one of the important foundations for studying the ecological status of territorial space and identifying different kinds of ecological protection spaces.This paper studies the spatio-temporal evolution of desertification ecological sensitivity in Inner Mongolia autonomous region from the year 1980 to 2020 at 1 km×1 km spatial grid scale based on quantitative evaluation method of desertification ecological sensitivity.The results show that:①The spatial distribution of desertification sensitivity grade represents a basic pattern of lower in the east and higher in the west and north of Inner Mongolia;②38.3%of the grids remain the same sensitivity grade unchanged,and 37.9%of the grids maintain the sensitivity grade below moderate,and 38.8%of the grids maintain the sensitivity grade above moderate sensitivity(inclusive);③Places such as mountain area of the northern section of great Khingan mountains,northern part of Hulunbuir grassland,West Liaohe plain,Hetao-Tumochuan plain and eastern and southern part of Ordos plateau remain low sensitivity grade or continue to reduce,while places such as southern part of Alxa plateau,the region on the north of hunshandake sand land remain high sensitivity grade or continue to increase.This study can provide scientific methods and spatial basis for delimitation of ecological protection and related policy-making.
作者
傅强
张海明
FU Qiang;ZHANG Haiming(School of architecture,Inner Mongolia University of Technology,Hohhot 010051,China;Inner Mongolia Urban Planning and Municipal Design Institute,Hohhot 010070,China)
出处
《测绘通报》
CSCD
北大核心
2023年第7期14-17,24,共5页
Bulletin of Surveying and Mapping
基金
国家自然科学基金(51408344)
内蒙古自治区自然科学基金项目(2021MS05025,2022QN05020)。
关键词
土地沙化
生态敏感性
时空演变
内蒙古自治区
desertification
ecological sensitivity
temporal-spatio evolution
Inner Mongolia autonomous region
