干旱区生态环境知识资源中心(Arid): 塔里木河下游生态输水对天然植被NPP的影响

Arid

	塔里木河下游生态输水对天然植被NPP的影响
其他题名	Effects of ecological water conveyance on NPP of natural vegetation in the lower reaches of Tarim River
	张静静; 郝海超; 郝兴明; 范雪; 李远航
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	植被净初级生产力(Net primary production,NPP)是陆地生态系统碳循环及能量流动的关键参数,表征生态系统质量状况。基于20012019年MOD13A1、MCD12Q1、TERRACLIMATE等数据,利用CASA模型,估算了近20 a来塔里木河下游生态输水条件下天然植被NPP的时空变化趋势;通过Slope趋势分析和Person相关分析法,从时空分布、不同植被类型和不同累积输水量方面分析了生态输水工程对塔里木河下游天然植被生长状况的影响。结果表明:(1)在近20 a间,塔里木河下游天然植被NPP整体呈上升趋势,其中极显著增加和显著增加的面积分别占总面积的31.93% (P<0.01)和11.49%(P<0.05),平均增速为0.40 g C·m~(-2)·a~(-1)。(2)在横向上,塔里木河下游天然植被NPP随着与河道距离的增加而下降;纵向上,沿河道自上而下,天然植被NPP依次表现为:上段(28.21gC·m~(-2))>中段(18.70 g C·m~(-2))>下段(13.55 g C·m~(-2))。(3)对不同植被类型NPP而言,柽柳群落(57.37 g C·m~(-2))>胡杨群落(29.29 g C·m~(-2))>草本群落(23.23 g C·m~(-2)),且柽柳群落在生态输水过程中NPP增幅也最大,增幅达350.20%。(4)地下水埋深和天然植被NPP均与累积3 a的生态输水量相关性显著,相关系数分别为:-0.70(P<0.01)、0.62(P<0.01),年内总输水量与下一年地下水埋深相关性明显高于与当年地下水埋深的相关性;此外,随地下水埋深持续稳定回升,20102019年天然植被NPP与地下水埋深相关性也明显增强(R~2=0.62)。
英文摘要	Vegetation net primary production (NPP) is a key parameter of the carbon cycle and energy flow in terrestrial ecosystems that characterizes the quality the latter. This article estimated the spatiotemporal of the NPP natural vegetation over the last 20 years under the condition of ecological water conveyance in the lower reaches of Tarim River, Xinjiang, China based on the CASA model. Meanwhile, the impact of ecological water conveyance projects on the growth of natural vegetation in the lower reaches of Tarim River was analyzed from the perspectives of spatiotemporal distribution, vegetation type, and cumulative water transfer through slope trend and Pearson correlation analyses. Several interesting results were obtained. (1) The NPP of natural vegetation in the lower reaches of Tarim River showed an overall upward trend, with an average growth rate of 0.40 g C·m~(-2) ·a~(-1). Extremely significant increases, significant increases, and insignificant changes in the areas accounting for 31.93% (P<0.01), 11.49% (P<0.05), and 52.03%, respectively. (2) Horizontally, the NPP of natural vegetation in the lower reaches of Tarim River decreased as the distance from the river channel increased in the following order: 0-1000 m>1000-2000 m>2000-10000 m. From top to bottom along the river channel, the NPP of natural vegetation decreased in the following order: upper section (28.21 g C·m~(-2)) > middle section (18.70 g C·m~(-2))>lower section (13.55 g C·m~(-2)), with the largest increase of 61.39% in the middle segment. (3) In terms of vegetation type, the NPP of natural vegetation decreased in the following order: Tamarix community (57.37 g C·m~(-2))>Populus euphratica community (29.29 g C·m~(-2))>herbal community (23.23 g C·m~(-2)). Among the vegetation types studied, the Tamarix community showed the greatest increase in NPP (350.20%) during ecological water conveyance. However, the characteristics of NPP changes in the Tamarix, P. euphratica, and herbal communities, the growth period of which is April-October, during the year were similar: NPP increased slowly from April to July but rose quickly from July to September. (4) Groundwater depth and the NPP of natural vegetation were significantly correlated with the accumulated ecological water volume over 3 years, with correlation coefficients of -0.70 (P< 0.01) and 0.62 (P<0.01), respectively. The correlation between annual ecological water and groundwater depth in the next year was significantly higher than that in the current year. In addition, as the groundwater depth steadily increased, the correlation between the NPP of natural vegetation and groundwater depth increased significantly from 2010 to 2019 (R~2=0.62). This paper systematically analyzed variations in the NPP of natural vegetation in the lower reaches of Tarim River since the implementation of ecological water conveyance and provides a scientific reference for further water conveyance and ecological restoration plans in the river.
中文关键词	内陆河流域 ; 地下水埋深 ; CASA模型 ; 荒漠河岸林
英文关键词	inland river basins groundwater depth CASA model desert riparian forest
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:6983215
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/365028
作者单位	张静静, 中国科学院新疆生态与地理研究所;;新疆阿克苏绿洲农田生态系统国家野外科学观测研究站;;中国科学院大学, 荒漠与绿洲生态国家重点实验室;;新疆阿克苏绿洲农田生态系统国家野外科学观测研究站;;, 乌鲁木齐;;阿克苏;;, 新疆;;新疆;;北京 830011;;843017;;100049, 中国.; 郝海超, 中国科学院新疆生态与地理研究所;;新疆阿克苏绿洲农田生态系统国家野外科学观测研究站;;中国科学院大学, 荒漠与绿洲生态国家重点实验室;;新疆阿克苏绿洲农田生态系统国家野外科学观测研究站;;, 乌鲁木齐;;阿克苏;;, 新疆;;新疆;;北京 830011;;843017;;100049, 中国.; 郝兴明, 中国科学院新疆生态与地理研究所;;新疆阿克苏绿洲农田生态系统国家野外科学观测研究站, 荒漠与绿洲生态国家重点实验室;;新疆阿克苏绿洲农田生态系统国家野外科学观测研究站, 乌鲁木齐;;阿克苏, 新疆;;新疆 830011;;843017, 中国.; 范雪, 中国科学院新疆生态与地理研究所;;新疆阿克苏绿洲农田生态系统国家野外科学观测研究站;;新疆师范大学生命科学学院, 荒漠与绿洲生态国家重点实验室;;新疆阿克苏绿洲农田生态系统国家野外科学观测研究站;;, 乌鲁木齐;;阿克苏;;乌鲁木齐, 新疆;;新疆;;新疆 830011;;843017;;830054, 中国.; 李远航, 中国科学院新疆生态与地理研究所;;新疆阿克苏绿洲农田生态系统国家野外科学观测研究站;;新疆师范大学生命科学学院, 荒漠与绿洲生态国家重点实验室;;新疆阿克苏绿洲农田生态系统国家野外科学观测研究站;;, 乌鲁木齐;;阿克苏;;乌鲁木齐, 新疆;;新疆;;新疆 830011;;843017;;830054, 中国.
推荐引用方式 GB/T 7714	张静静,郝海超,郝兴明,等. 塔里木河下游生态输水对天然植被NPP的影响[J],2021,44(3):1000-6060.
APA	张静静,郝海超,郝兴明,范雪,&李远航.(2021).塔里木河下游生态输水对天然植被NPP的影响.干旱区地理,44(3),1000-6060.
MLA	张静静,et al."塔里木河下游生态输水对天然植被NPP的影响".干旱区地理 44.3(2021):1000-6060.