干旱区生态环境知识资源中心(Arid): 塔里木河下游输水20 a的生态响应

Arid

	塔里木河下游输水20 a的生态响应
其他题名	Ecological responses of ecological water conveyance in the lower reaches of Tarim River for 20 years
	李玉朋; 陈亚宁; 叶朝霞; 王非; 孙帆; 秦景秀
来源期刊	干旱区地理
ISSN	1000-6060
出版年	2021
卷号	44 期号:3 页码:1000-6060
中文摘要	为了补给塔里木河下游断流的河道和挽救濒死的荒漠群落,自2001年塔里木河实施了生态输水工程,流域生态环境得到初步改善,实现了流域经济社会发展与生态环境保护的双赢。在生态输水20 a之际,为了评估输水的生态效应,基于多源遥感数据MOD13Q1和MCD12Q1数据,通过数学统计方法调查了塔里木河下游归一化植被指数(NDVI)和植被覆盖度的时空变化。结果表明:经过近20 a的生态输水,塔里木河下游的NDVI从2000年的0.14增大到2020年的0.21,增幅达33.3%,植被面积从2000年492 km~2扩大到2020年的1423 km~2;其中,低、中、高植被覆盖度的面积相较于2000年分别增多了277 km~2,537 km~2和132 km~2,增幅分别达到20.8%,448.0%和190.0%,中段的植被面积和植被覆盖度的增幅均高于上、下段区域的增幅。NDVI和植被覆盖度均表现为距离河道2 km范围内的值较大,且增幅也较大,2 km以外NDVI和植被覆盖度逐渐变小,且增幅也较小。空间上来看,约有57.1%的区域NDVI和植被覆盖度呈现显著增加趋势,显著减小的区域都不超过2.0%。Hurst指数表明超过75.0%以上的区域这种变绿的趋势会在未来继续保持,仅有6.1%的区域生态会继续恶化。综合评估塔里木河输水工程的生态效应,对于干旱区荒漠的保育恢复治理、生态水资源管理等方面具有重要的科学意义。
英文摘要	An ecological water conveyance project has been implemented since 2001 in the lower Tarim River, Xinjiang, China to replenish its broken river channel and save dying desert communities. The ecological environment of the basin of the river was initially improved, achieving a win-win situation considering both economic and social development and ecological environmental protection of the basin. In this paper, the spatiotemporal changes in the normalized difference vegetation index (NDVI) and vegetation cover in the lower Tarim River were investigated using mathematical statistical methods based on multisource remote sensing data (MOD13Q1 and MCD12Q1) to evaluate the ecological effects of water conveyance in the last 20 years. The results show that the NDVI of the lower reaches of Tarim River increased by 33.3% (from 0.14 in 2000 to 0.21 in 2020) and that the vegetation area increased by 188.0% (from 492 m~2 in 2000 to 1423 m~2 in 2020). Compared with those in 2000, areas with low, medium, and high vegetation coverage increased by 277 m~2, 537 m~2, and 132 m~2, respectively (increase rates of 20.8%, 448.0%, and 190.0%, respectively). The increases in the vegetation area and vegetation cover in the midstream section were higher than those in the upper and lower reaches. The NDVI and vegetation cover both showed large increases within 2 km from the river banks, which gradually became smaller beyond 2 km. Spatially, about 57.1% of the areas showed a significant increasing trend in NDVI and vegetation cover, and no more than 2.0% of the areas showed a significant decrease. The Hurst index indicates that more than 75.0% of the areas with this greening trend will continue in the future and that only 6.1% of the areas will continue to ecologically deteriorate. A comprehensive assessment of the ecological effects of Tarim River water conveyance project is of great scientific significance for the conservation and restoration management of arid zone deserts and ecological water resource management.
中文关键词	塔里木河下游 ; 生态输水 ; 植被覆盖度
英文关键词	NDVI lower reaches of Tarim River ecological water conveyance normalized difference vegetation index (NDVI) vegetation cover
类型	Article
语种	中文
国家	中国
收录类别	CSCD
WOS类目	Plant Sciences
CSCD记录号	CSCD:6983214
来源机构	中国科学院新疆生态与地理研究所
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/365027
作者单位	李玉朋, 中国科学院新疆生态与地理研究所, 荒漠与绿洲生态国家重点实验室, 乌鲁木齐, 新疆 830011, 中国.; 陈亚宁, 中国科学院新疆生态与地理研究所, 荒漠与绿洲生态国家重点实验室, 乌鲁木齐, 新疆 830011, 中国.; 叶朝霞, 中国科学院新疆生态与地理研究所, 荒漠与绿洲生态国家重点实验室, 乌鲁木齐, 新疆 830011, 中国.; 王非, 中国科学院新疆生态与地理研究所;;中国科学院大学, 荒漠与绿洲生态国家重点实验室;;, 乌鲁木齐;;, 新疆;;北京 830011;;100049, 中国.; 孙帆, 中国科学院新疆生态与地理研究所;;中国科学院大学, 荒漠与绿洲生态国家重点实验室;;, 乌鲁木齐;;, 新疆;;北京 830011;;100049, 中国.; 秦景秀, 中国科学院新疆生态与地理研究所;;中国科学院大学, 荒漠与绿洲生态国家重点实验室;;, 乌鲁木齐;;, 新疆;;北京 830011;;100049, 中国.
推荐引用方式 GB/T 7714	李玉朋,陈亚宁,叶朝霞,等. 塔里木河下游输水20 a的生态响应[J]. 中国科学院新疆生态与地理研究所,2021,44(3):1000-6060.
APA	李玉朋,陈亚宁,叶朝霞,王非,孙帆,&秦景秀.(2021).塔里木河下游输水20 a的生态响应.干旱区地理,44(3),1000-6060.
MLA	李玉朋,et al."塔里木河下游输水20 a的生态响应".干旱区地理 44.3(2021):1000-6060.