摘要
生态系统质量是衡量区域生态系统健康的重要指标,科学评估生态系统质量对于推动自然环境保护修复和生态恢复效益评估具有重要的科学意义.基于植被覆盖度(FVC)、叶面积指数(LAI)和总初级生产力(GPP)3个生态系统遥感参量,构建了生态系统质量指数(EQI)评估模型,测算了 2015-2020年贵州武陵山区生态系统质量状况,并揭示了时空演变与波动特征.结果表明:1)2015-2020年,贵州武陵山区FVC、LAI与GPP均处于增长趋势,分别增长了 3.40％、2.00％和0.61％.2)FVC、LAI与GPP均以较低与低波动状态为主,面积占比分别达到83.14％、83.93％和93.56％.3)贵州武陵山区生态系统质量指数增长了 2.30％,其中98.74％的区域处于较低与低波动状态.4)贵州武陵山区生态系统质量总体均处于优和良的状态,且这些区域在各年的面积占比均超过了 95％.生态系统质量改善的区域主要为德江、思南与石阡,而退化区域则以玉屏、江口和万山区为主.研究可为贵州武陵山区生态系统管理和恢复效益评估提供理论支撑.
Abstract
Ecosystem quality is an important indicator for measuring the health of regional ecosystems.Scientific assessment of ecosystem quality is of great scientific significance for rapidly promoting natural environment protection and restoration,as well as evaluating the benefits of ecological restoration.In this study,the evaluation model of ecosystem quality index(EQI)was constructed based on three eco-system remote sensing parameters:Fractional vegetation coverage(FVC),leaf area index(LAI),and gross primary productivity(GPP).The ecological quality status of Wuling Mountain area in Guizhou Province from 2015 to 2020 was calculated,and the spatiotemporal evolution and fluctuation character-istics were revealed The results showed that:1)From 2015 to 2020,FVC,LAI,and GPP in Wuling Mountainous Area of Guizhou showed an increasing trend,with growth rates of 3.40％,2.00％,and 0.61％,respectively.2)FVC,LAI,and GPP were mainly in lower and low fluctuation states,with area proportions of 83.14％,83.93％,and 93.56％,respectively.3)The EQI of Wuling Mountain Area in Guizhou Province increased by 2.30％,with 98.74％of the area in a lower and low fluctua-tion state.4)The overall ecological quality of Wuling Mountain Area in Guizhou was in an excellent and good state,and the proportion of these areas in each year exceeded 95％.The improved areas were mainly in counties of Dejiang,Sinann,and Shiqian,while the degraded areas were mainly coun-ties of Yuping,Jiangkou,and Wanshan District.This study can provide theoretical support for ecosys-tem management and restoration benefit evaluation in Wuling Mountain Area of Guizhou.
基金项目
铜仁学院博士科研启动基金项目(trxyDH2103)
国家自然科学基金项目(42261052)
国家自然科学基金项目(42461047)
铜仁市科技计划项目(铜市科研[2022]63号)
铜仁市科技计划项目(铜仁市科研[2023]5号)
贵州省基础研究计划(自然科学类)项目(黔科合基础-ZK[2023]一般464)
贵州省教育厅高等学校科学研究项目(青年项目)(黔教技[2022]351号)
维普
万方数据