鄂尔多斯市植被覆盖度时空变化特征及影响因素分析  

Analysis of temporal and spatial variation characteristics of vegetation coverage and its driving factors in Ordos City

作　　者：潘妍霖 秦富仓 盛艳 刘林甫 白旭 Pan Yanlin;Qin Fucang;Sheng Yan;Liu Linfu;Bai Xu(Desert Science and Engineering College,Inner Mongolia Agricultural University,Hohhot 010018,China;Inner Mongolia Academy of Forestry Sciences,Hohhot 010010;Key Laboratory of State Forest Administration for Desert Ecosystem Protection and Restoration,Inner Mongolia,Hohhot 010018,China;Jungar Banner Natural Resources Bureau,Inner Mongolia,Erdos 010300,China)

机构地区：[1]内蒙古农业大学沙漠治理学院,内蒙古呼和浩特010018 [2]内蒙古自治区林业科学研究院,内蒙古呼和浩特010010 [3]荒漠生态系统保护与修复国家林业和草原局重点实验室,内蒙古呼和浩特010018 [4]准格尔旗自然资源局,内蒙古鄂尔多斯010300

出　　处：《内蒙古林业科技》2025年第1期15-21,共7页Journal of Inner Mongolia Forestry Science and Technology

基　　金：科技兴蒙行动重点专项(2022EEDSKJXM005-01);内蒙古自治区防沙治沙科技创新重大示范工程“揭榜挂帅”项目(2024JBGS0021-1)。

摘　　要：探究鄂尔多斯市植被覆盖度时空变化特征及影响因素,为生态环境保护、区域发展规划的政策制定提供科学依据和决策支持。本文基于归一化植被指数(Normalized differential vegetation index,NDVI)、气象、土地利用等数据,运用Theil-Sen趋势、Mann-Kendall显著性检验、Cv变异系数、Hurst指数等方法分析鄂尔多斯市2000—2022年的植被覆盖度时空变化特征,并利用地理探测器模型探究植被覆盖度与自然因素、人为因素的关系。结果表明:(1)鄂尔多斯市多年平均植被覆盖度为0.25,呈现出自西向东递增的趋势,研究期间鄂尔多斯市植被覆盖度呈上升趋势。(2)植被覆盖度变异系数为0~1.06,均值0.19,稳定性比较强,准格尔旗、康巴什区基本表现为中高、高波动变化;植被覆盖度年际变化斜率−0.026~0.031,区域生态环境大部分呈现极显著改善,占鄂尔多斯市总面积的73.04%。(3)利用Hurst指数预测分析,植被覆盖度变化主要为强持续性增加、轻微持续性增加,分别占鄂尔多斯市总面积的24.30%、71.18%。(4)人为因素对鄂尔多斯市植被覆盖度变化起主导作用,一系列生态保护工程建设为改善鄂尔多斯市植被状况作出了巨大贡献。To explore the spatio-temporal variation characteristics of vegetation coverage and its influencing factors in Ordos City,and to provide scientific basis and decision support for the policy-making of ecological environment protection and regional development planning.In this paper,based on the Normalized differential vegetation index(NDVI)data,meteorological data and land use data,Theil-Sen,Mann-Kendall significance test,coefficient of variation,Hurst index and other methods were used to analyze the spatio-temporal variation trend of vegetation index in Ordos City from 2000 to 2022,and geographical detector was used to explore the relationship between vegetation coverage and natural and human factors.The results showed that:(1)the average annual vegetation coverage of Ordos City was 0.25,showing an increasing trend from west to east,and the vegetation coverage of Ordos City showed an increasing trend during the study period.(2)The coefficient of variation of vegetation cover ranged 0‒1.06,with an average value of 0.19,indicating a strong stability.The vegetation coverage in Junge Banner and Kangbashi area basically showed moderate and high fluctuation.The slope of interannual variation in vegetation cover ranged was−0.026‒0.031,and most of the regional ecological environment showed significant improvement,accounting for 73.04%of Ordos City.(3)According to Hurst index prediction analysis,vegetation coverage changes were mainly strong and slight sustained increases,accounting for 24.30%and 71.18%of the total area of Ordos City.(4)Human factors played a leading role in the change of vegetation coverage in Ordos City,and a series of ecological protection projects have made great contributions to improving the vegetation status in Ordos City.

关 键 词：植被覆盖度 时空变化特征 驱动因素 鄂尔多斯市 

分 类 号：Q948[生物学—植物学]