期刊论文

Spatial-temporal change of Chagan Lake and response to precipitation change from 1985 to 2018

中文

中国农业信息

1672-0423

2020

32

1

64-73

10.12105/j.issn.1672-0423.20200107

(CCNU19TS045):中央高校基本科研业务费

本校为第一机构

【目的】查干湖是吉林省最大的淡水湖泊,其形态和面积的时空格局变化对当地生态环境维护和相关产业发展有着重要意义。通过长时间尺度上遥感监测查干湖水体的时空格局变化,分析其变化特征与规律,探讨降雨量对湖体的影响,从而为区域水环境的生态保护与资源合理利用提出针对性建议。【方法】基于查干湖地区1985—2018年共8景Landsat遥感影像数据,采用NDWI水体指数法对查干湖水体进行识别与提取,通过ArcGIS空间分析功能探究查干湖水体的时空格局变化过程。同时,结合水体面积变化,利用降水数据探讨气候变化对湖水容量的影响。【结果】1985—2018年,查干湖水域空间格局呈波浪形上升变化,水体时空变化...

[Purpose]Chagan Lake is the largest fresh water lake in Jilin Province.The spatial and temporal pattern change of its shape and area has great significance to the local ecological environment maintenance and the development of related industries.In this paper,the temporal and spatial pattern changes of Chagan Lake are monitored by remote sensing on a long-term scale.Based on the analysis of its changing characteristics,this paper discusses the impact of rainfall on the lake,so as to provide targeted suggestions for the ecological protection of regional water environment and the rational utiliz...