基于植被指数的生态恢复力评价及影响因素研究——以武陵山片区为例
Evaluation and Influencing Factors of Ecological Resilience Based on Vegetation Index:A Case Study of Wuling Mountain Area
杨蔓红 1尹宁玲 1左金友 1杨益民 1吴吉林1
作者信息
- 1. 吉首大学 土木工程与建筑学院,湖南 张家界 427000
- 折叠
摘要
选取归一化植被指数(NDVI)作为生态恢复力替代指标,从敏感性和适应性2个维度构建了生态恢复力测度模型,对2000-2020年武陵山片区生态恢复力进行了综合评价,并通过多元线性回归模型探究了武陵山片区生态恢复力的主要影响因素.结果表明:(1)2000-2020年武陵山片区生态恢复力指数平均为0.45,整体呈北高南低、西高东低的空间分布格局;(2)低、较低、中等、较高和高生态恢复力地区分别占武陵山总片区面积的0.29%、18.19%、35.82%、29.01%和16.69%;(3)生态恢复力与年平均气温、坡度、建设用地面积占比、碳排放量呈负相关,与年降水量、高程、人口密度、GDP呈正相关;其中年平均气温、人口密度和碳排放量是武陵山片区生态恢复力的主要影响因素.
Abstract
The normalized vegetation index(NDVI)was selected as a proxy indicator of ecological resilience.An ecological resilience measurement model was constructed from two dimensions of sensitivity and adaptability to evaluate the ecological resilience of the Wuling Mountain Area from 2000 to 2020.The main influencing factors of the ecological resilience in the Wuling Mountain Area were explored through the multiple linear regression model.The results show that:(1)The average value of ecological resilience in the Wuling Mountain Area from 2000 to 2020 is 0.45,and the ecological resilience forms a spatial distribution pattern of high in the north and low in the south,high in the west and low in the east.(2)Low,lower,medium,higher and high ecological resilience areas account for 0.29%,18.19%,35.82%,29.01%and 16.69%of the region,respectively.(3)Ecological resilience is negatively correlated with mean annual temperature,slope,proportion of built-up land area and carbon emissions,and positively correlated with annual precipitation,elevation,population density and GDP.The mean annual temperature,population density and carbon emissions are the main factors affecting ecological resilience in the Wuling Mountain Area.
关键词
生态恢复力/归一化植被指数/影响因素/武陵山片区Key words
Ecological resilience/Normalized vegetation index/Influencing factor/Wuling Mountain Area引用本文复制引用
基金项目
国家自然科学基金(42061036)
湖南省自然科学基金(2023JJ30491)
出版年
2024
国家科技期刊平台
NSTL
万方数据