生态学报2018，Vol.38Issue(1)：96-104,9.DOI:10.5846/stxb201612262677
2000-2014年我国西北地区湖泊面积的时空变化
Spatial-temporal variations in lakes in northwest China from 2000 to 2014
摘要
Abstract
Based on Landsat TM/ETM+/OLI remote sensing images in the period from 2000 to 2014,the vectorized boundary of 111 lakes with areas greater than 10 km2 in northwest China were obtained by artificial visual interpretation technology and the causes of lake variations were analyzed.Several conclusions can be drawn from the present study:(1)From 2000 to 2014,the lakes in northwest China have expanded,with lake areas increasing from 1.58 × 104 km2 to 1.74 × 104 km2.(2) The lakes showed an overall expansion trend;however,several regional differences were noted and,thus,as shown in the figure 4,the study area could be divided into five sub-regions based on changes in the area of the lakes.The lakes in northern Xinjiang Uygur Autonomous Region and southern Qinghai Province remained stable.The lakes showing an expanding trend were widely distributed in the Inner Mongolia-Xin Jiang Lake Zone and the Tibetan Plateau Lake Zone.This region from west to east included the Tarim Basin,northern piedmont of Kunlun Mountains,Altun Mountains,Hoh Xil,Qaidam Basin,southern piedmont of Qilian Mountains,and the northern Three-River source region.The lakes that were shrinking were primarily located in two regions that consisted of the central northern Xinjiang including Junggar Basin and the Turpan Depression,and the northern Karakorum Mountains.(3) The reasons behind the lake area changes in the different regions differed owing to the complex environment in the study area.For the region where the lakes were expanding,an increase in precipitation and melt water from glaciers and frozen soil due to climate warming were the dominant factors behind the changes.The state of glacier mass balance and human activities played an important role in the region where the lakes were shrinking in area,while in the region where the lakes remained stable,the topographic characteristics of the lakes such as intensive hydraulic connection between lakes and rivers were the main factors behind the observed results.关键词
湖泊/时空变化/遥感/西北地区Key words
lake/spatial-temporal variations/remote sensing/northwest China引用本文复制引用
李晓锋,姚晓军,孙美平,宫鹏,安丽娜,祁苗苗,高永鹏..2000-2014年我国西北地区湖泊面积的时空变化[J].生态学报,2018,38(1):96-104,9.基金项目
国家自然科学基金项目(41261016,41561016) （41261016,41561016）
中国科学院冰冻圈科学国家重点实验室开放基金项目(SKLCS-OP-2016-10) （SKLCS-OP-2016-10）
西北师范大学青年教师科研能力提升计划项目(NWNU-LKQN-14-4) （NWNU-LKQN-14-4）
