干旱区生态环境知识资源中心(Arid): 东居延海湿地恢复进程研究

Arid

	东居延海湿地恢复进程研究
其他题名	Research on wetland restoration process of the East Juyan Lake
	李蓓; 张一驰; 于静洁; 杜朝阳; 王平
来源期刊	地理研究
ISSN	1000-0585
出版年	2017
卷号	36 期号:7 页码:1223-1232
中文摘要	利用比值阈值法解译2000-2015年东居延海Landsat影像,获取逐月湿地、挺水植物及裸水水域面积,分析生态输水以来东居延海湿地恢复进程。研究表明:① 2002年生态输水进入干涸的东居延海,之后湿地面积迅速扩大,2015年湿地面积达54 km~2,较2002年扩大了近1倍; 2009年前湿地面积快速增长,湿地组成以水体为主(占比>94%);2010年后湿地面积增速减缓,变化稳定,维持在55 km~2左右,挺水植物面积已达9 km~2(占比>15%)。②湿地面积年内变化呈明显季节性特征,2002-2003年湿地季节性有水;2004年以后湿地常年有水,10-11月湿地面积最大,7-8月湿地面积最小而挺水植物面积最大。③东居延海湿地面积及其变化特征与入湖水量和时间密切相关,适宜的生态输水调度是东居延海湿地健康的重要保障。
英文摘要	As vital components of lower reaches of inland river basins, terminal lake wetlands provide ecosystem services, e.g., conserving water resources, preventing soil desertification, protecting biological diversity and productivity, regulating local microclimate and improving ecology and environment functions, etc. However, the drying of terminal lakes has been accompanied by a series of serious ecological problems (e.g., soil desertification, vegetation degradation, declination of water table, forming sources of sand storms, etc), which is considered as an important signal of ecological and environmental degradation in the watersheds of inland rivers in arid regions. Such issues have been widely raised in inland arid basins of northwestern China, e.g., Tarim, Heihe, and Shiyang river basins. To restore the delicate ecological environment and rebuild the balance between natural environment and human- being society in these basins, the Chinese government implemented the Inland Watershed Water Division Plan in 2000. East Juyan Lake, the terminal lake of China’s second largest inland river Heihe River, shrunk continually for lacking surface water recharge and dried up completely in 1992. The ecological degradation was so severe that it had aroused great concerns around China. As a result of the implementation of environmental water transfer project, the East Juyan Lake had water flowing into it again in 2002. In order to understand wetland restoration process of the lake, this paper provides detailed information of wetland area dynamic changes by interpreting 137 Landsat images with the method of ratio algorithm, and analyses monthly wetland areas, pure water body areas and water vegetation areas from 2000 to 2015. The results show that: (1)There was a rising trend of wetland area in the study period. Before 2009, with more than 94% of pure water body, wetland expanded at an annual rate of 3.7 km~2. After 2010, wetland area increased slightly and maintained an area of around 55 km~2. Till 2015, wetland contained more than 9 km~2 of water vegetation and its area, 54 km~2, is almost twice as much as that of 2002. (2)Wetland has not dried up seasonally since 2004, and wetland area is the biggest in October or November and the smallest in July or August in a year, while water vegetation booms from June to September. (3)Wetland area and its change are closely related to water volumes and the implementing time of environmental water transfer project, which ensures the health of the East Juyan Lake.
中文关键词	东居延海 ; 湿地恢复 ; 生态输水
英文关键词	Landsat East Juyan Lake wetland restoration environmental water transfer Landsat
语种	中文
国家	中国
收录类别	CSCD
WOS类目	ENVIRONMENTAL SCIENCES
WOS研究方向	Environmental Sciences & Ecology
CSCD记录号	CSCD:6029366
来源机构	中国科学院地理科学与资源研究所
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/235765
作者单位	中国科学院地理科学与资源研究所, 中国科学院陆地水循环及地表过程重点实验室, 北京 100101, 中国
推荐引用方式 GB/T 7714	李蓓,张一驰,于静洁,等. 东居延海湿地恢复进程研究[J]. 中国科学院地理科学与资源研究所,2017,36(7):1223-1232.
APA	李蓓,张一驰,于静洁,杜朝阳,&王平.(2017).东居延海湿地恢复进程研究.地理研究,36(7),1223-1232.
MLA	李蓓,et al."东居延海湿地恢复进程研究".地理研究 36.7(2017):1223-1232.