基于遥感生态指数的治沟造地区生态环境质量演变研究

Research on the Evolution of Ecological Environment Quality in Ditch Construction Area Based on Remote Sensing Ecological Index

本研究以典型治沟造地区为研究对象,选取两期Landsat8卫星影像数据,基于ENVI5.3、ArcGIS10.5遥感数据处理平台和数据分析及制图工具,利用生态环境质量遥感生态指数RSEI(Remote Sensing Based Ecological Index)模型估算方法,综合分析评价研究区2013~2017年间生态环境质量状况。研究表明:研究区两期RSEI指数均值分别为0.6949、0.7079;研究区生态环境质量2013~2017年间,以“一般”为主,处于“较差”和“差”的比重下降,处于“良”和“优”的比重增加,生态等级由低级向中高级转变,生态环境质量呈现变好的趋势;研究区生态环境不变的面积占比过半,生态环境变好面积大于变差面积,生态环境质量总体呈现较好的状态,研究结果可为今后黄土丘陵沟壑区生态环境建设提供科学依据和理论支撑。

This study takes the typical ditch construction area as the research object, selects two phases of Landsat8 satellite image data, and uses remote sensing ecological index RSEI (Remote Sensing Based Ecological Index) model estimation method, comprehensive analysis and evaluation of the ecological environment quality status in the study area from 2013 to 2017. The research shows that: the average values of the RSEI indexes in the two periods of the study area are 0.6949 and 0.7079 respectively;the ecological environment quality of the study area from 2013 to 2017 is mainly “general”, and the proportion of “poor” and “poor” decreases, and it is in “good”. The proportion of “excellent” and “excellent” increased, the ecological level changed from low-level to medium-high level, and the ecological environment quality showed a trend of improvement;the area of the study area with the same ecological environment accounted for more than half, and the area with better ecological environment was greater than the area with poor ecological environment. The overall quality is in a good state, and the research results can provide scientific basis and theoretical support for the construction of the ecological environment in the loess hilly gully area in the future.