2015~2020年四川省黄河流域植被状况遥感监测评估  

Remote Sensing Monitoring and Evaluation of the Vegetation Status in the Yellow River Basin of Sichuan Province from 2015 to 2020

作　　者：吴瑕 杨渺 谢强 佘红英 WU Xia;YANG Miao;XIE Qiang;SHE Hong-ying(Sichuan Academy of Environmental Sciences,Chengdu 610041,China)

机构地区：[1]四川省生态环境科学研究院,成都610041

出　　处：《四川环境》2023年第2期170-178,共9页Sichuan Environment

摘　　要：四川省黄河流域是“青藏高原生态安全屏障”和“黄土高原——川滇生态安全屏障”的重要组成部分。为了探究2015~2020年来四川省黄河流域植被生长及变化情况,为生态环境保护管理决策提供支撑,基于2015~2020年的归一化植被指数、植被覆盖度、总初级生产力以及叶面积指数四类植被参数数据,利用遥感模型和空间分析方法,从时间和空间两个维度,对四川省黄河流域植被生长状况进行了定量评估。结果表明:2015~2020年期间,研究区整体植被状况呈向好趋势,四类植被参数的年均值相比于2015年均有不同程度的上涨,植被覆盖度逐年提高,植被固碳能力上升,植被茂密程度有所增加。其中石渠县的植被参数增长幅度最大,说明其境内植被增长较为明显。The Yellow River basin in Sichuan Province is an important part of the"ecological security barrier of the Tibetan Plateau"and the 11 Loess Plateau-Sichuan-Yunnan ecological security barrier".In order to explore the vegetation growth and change of the Yellow River Basin in Sichuan Province from 2015 to 2020 and provide support for the ecological environment protection management decision.This paper based on data from four vegetation parameters of NDVI,FVC,GPP and LAI from 2015〜2020,used remote sensing models and spatial analysis methods,from the two dimensions of time and space,quantitatively evaluated the vegetation growth status in the Yellow River basin of Sichuan Province.The results showed that between 2015 and 2020,the overall vegetation status in the study area presented a positive trend.The annual average of the four types of the vegetation parameters increased to different degrees compared with 2015,the vegetation coverage increased year by year,the vegetation carbon fixation capacity increased,and the vegetation density increased.Among them,the vegetation parameters in Shiqu County increased the most,indicating that the vegetation growth is more obvious.

关 键 词：黄河流域 生态参数 植被 

分 类 号：X87[环境科学与工程—环境工程]