1979—2017年泊江海子流域桃-阿海子湖泊面积变化及影响因素研究  

Study on area change and influencing factors of Tao-Ahaizi lake in the Bojiang Haizi river basin from 1979 to 2017

作　　者：陈悦 董少刚 王磊 侯庆秋 CHEN Yue;DONG Shaogang;WANG Lei;HOU Qingqiu(School of ecology and environment,Inner Mongolia university,Hohhot,Inner Mongolia,01002l;Key Laboratory of River and Lake Ecology of Inner Mongolia Autonomous Region,Hohhot,Inner Mongolia,010021)

机构地区：[1]内蒙古大学生态与环境学院,内蒙古呼和浩特010021 [2]内蒙古自治区河流与湖泊生态重点实验室,内蒙古呼和浩特010021

出　　处：《海洋湖沼通报》2023年第1期129-137,共9页Transactions of Oceanology and Limnology

基　　金：内蒙古自治区自然科学基金项目(2018MS04004);内蒙古自治区科技重大专项项目(ZDZX2018054);国家自然科学基金项目(41562020)资助。

摘　　要：本文以桃-阿海子湖泊为研究对象,利用Landsat遥感数据,通过水体指数法提取湖泊1979—2017年近40 a的NDWI水体影像,获取湖泊边界及湖泊面积变化情况,解释并分析了影响湖泊面积变化的气候及人为因素。结果表明:(1)1979—2017年桃-阿海子湖泊面积从12.84 km^(2)下降到2.30 km^(2),减少了82%,其中2002—2003年是湖泊面积显著变化的拐点。(2)湖泊面积变化整体上划分为三个阶段:相对稳定阶段(1979—1999年);萎缩阶段(2000—2015年);恢复阶段(2015—2017年)。(3)呈暖干化趋势的气候因素是2000年之前湖泊面积变化的主要影响因素;水利工程、生态恢复工程及煤矿开采等人类活动,使得湖泊得不到有效的水源补给,是2000年之后导致湖泊面积萎缩的主要影响因素;引水工程的实施是2015年湖泊面积开始有所恢复的主要原因。This paper takes the Tao-Ahaizi lake as research object.The Landsat remote sensing data are used to extract water image of nearly 40a from 1979 to 2017.The changes of lake boundary and lake area are obtained by water index method,and the climate and human factors affecting the changes are explained and analyzed.The results show that:(1)From 1979 to 2017,the area of Tao-Ahaizi lake decreased from 12.84 km^(2)to 2.30 km^(2),among which 2002—2003 was the inflection point of significant changes in the lake area.(2)The change of lake area showed a trend of periodic shrinkage,which was divided into three stages:the relatively stable stage(1979—1999),shrinking stage(2000—2015),and recovery stage(2015—2017).(3)Climatic factors with a warming and drying trend were the main influencing factors for the change of lake area before 2000.Human activities,such as water conservancy projects,ecological restoration projects and coal mining,make the lake unable to get effective water supply,which is the main factor that leads to the shrinking of the lake area after 2000.

关 键 词：桃-阿海子 湖泊面积 遥感 气候变化 人为因素 

分 类 号：P343.3[天文地球—水文科学]