干旱区生态环境知识资源中心(Arid): 2000-2014年博斯腾湖流域NPP时空变化特征及影响因子分析

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	2000-2014年博斯腾湖流域NPP时空变化特征及影响因子分析
其他题名	Spatio-temporal variations and impacting factors of vegetation NPP in the Bosten Lake Drainage Basin from 2000to 2014
	艾则孜提约麦尔·麦麦提 1; 玉素甫江·如素力 2; 姜红 1; 拜合提尼沙·阿不都克日木 1; 何辉 1
来源期刊	草业科学
ISSN	1001-0629
出版年	2018
卷号	35 期号:7 页码:1743-1753
中文摘要	植被净初级生产力(net primary productivity,NPP)是反映陆地生态系统对气候变化响应的重要指标。本研究利用2000-2014年MODIS的MOD17A3、MOD12Q1产品,采用GWR(地理加权回归分析方法)建模法反演的近地气温数据以及TRMM降水量数据,通过逐像元的斜率、偏相关和复相关分析,分析新疆博斯腾湖流域净初级生产力和降水、近地气温等气候要素的时空变化趋势,探讨NPP的时空格局及其影响因素。结果表明,1)各月气温地理加权回归模型(geographical weighted regression,GWR)的决定系数(R~2)均高于0.85,估算得到的近地表气温与实测气温的验证结果R~2均高于0.9,能满足本研究的精度需求。2)在研究时间内,博斯腾湖流域NPP的年均值在205.12~235.7 g·(m~2·a)~(-1)波动,多年NPP平均值为221.52g·(m~2·a)~(-1),整体上NPP呈减少趋势。3)NPP变化斜率介于-18~26g·(m~2·a)~(-1),减少趋势主要分布在山区,占总面积的35.23%;增长趋势主要分布在平原绿洲区,占总面积的16.99%。4)博斯腾湖流域39.81%的植被NPP的变化受气候因素影响,山区和平原区都有分布;受非气候因素影响的区域占总面积的16.57%,主要分布在人类居住的平原绿洲区域,说明研究区NPP的时空变化是气候变化和人类活动的共同结果,但气候因素的影响较大。
英文摘要	Net Primary Productivity(NPP)is an important indicator reflecting the response of terrestrial ecosystems to climate change,and is closely connected with climate change,and the carbon balance and cycle. NPP is a fundamental ecosystem function that is influenced by vegetation type,climate,and human activities at local and global scales.Research on NPP of ecosystems is important,as solutions are needed for issues,such as environmental change,sustainable management,and biodiversity conservation.Hence,an in-depth understanding of spatio-temporal variation and driving factors of NPP are fundamental for carbon balance and cycle in changing environments.Bosten Lake Drainage Basin,northwestern China,covers a vast area of complicated terrain,including the most of the middle Tianshan Mountains in the northwest,the entire Yanqi basin,and northeast Tarim basin in the south,and is characterized by distinctive distribution patterns of temperature and precipitation.In this paper,based on MOD11A2,GHCN_CAMS air temperature,DEM(digital elevation model), and metrological observed data,we established monthly Geographical Weighted Regression(GWR)models and retrieved near surface air temperature.Then,the spatio-temporal evolution characteristics and driving factors of NPP in Bosten Lake Drainage Basin was studied employing methods of slope,partial correlation,and multiple correlations as effective methodologies.The results demonstrate that:1)the determinant coefficient (R~2)of the monthly temperature GWR regression model was>0.85and R~2 between estimated and observed air temperature was R~2>0.9,indicating the accuracy of this research;2)the annual mean NPP varied between 205.12~235.7g·(m~2·a)~(-1),whereas the inter-annual mean value was 221.52g·(m~2·a)~(-1).Generally, vegetation NPP in the research area showed a decreasing trend;3)the linear slope analysis demonstrated that the NPP varied between -18~26g· (m~2 ·a)~(-1).The decreasing trend was mainly distributed in the mountains,which accounted for 5.23%of the total study area,whereas the increasing trend was mainly distributed to the oasis plain area,which accounted for 16.99%;4)the regions with NPP changes resulted from climate factors of 39.81% of the total coverage of the research area.These regions were distributed in the mountainous and plain areas.By contrast,those subjected to non-climate factors occupied 16.57%,were mainly located at plain areas.Regarding the significance of this research,the results provide information for ecological environmental construction and sustainable development for the Bosten Lake drainage basin.
中文关键词	气候变化 ; 地理加权回归分析 ; 博斯腾湖流域
英文关键词	NPP MOD17A3 TRMM NPP MOD17A3 climate change GWR TRMM Bosten Lake Drainage Basin
语种	中文
国家	中国
收录类别	CSCD
WOS类目	AGRICULTURE MULTIDISCIPLINARY
WOS研究方向	Agriculture
CSCD记录号	CSCD:6298105
来源机构	新疆师范大学
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/237333
作者单位	1.新疆师范大学地理科学与旅游学院/流域信息集成与生态安全实验室, 乌鲁木齐, 新疆 830054, 中国; 2.新疆师范大学地理科学与旅游学院/流域信息集成与生态安全实验室;;新疆干旱区湖泊环境与资源重点实验室, ;;新疆干旱区湖泊环境与资源重点实验室, 乌鲁木齐;;乌鲁木齐, 新疆;;新疆 830054;;830054, 中国
推荐引用方式 GB/T 7714	艾则孜提约麦尔·麦麦提,玉素甫江·如素力,姜红,等. 2000-2014年博斯腾湖流域NPP时空变化特征及影响因子分析[J]. 新疆师范大学,2018,35(7):1743-1753.
APA	艾则孜提约麦尔·麦麦提,玉素甫江·如素力,姜红,拜合提尼沙·阿不都克日木,&何辉.(2018).2000-2014年博斯腾湖流域NPP时空变化特征及影响因子分析.草业科学,35(7),1743-1753.
MLA	艾则孜提约麦尔·麦麦提,et al."2000-2014年博斯腾湖流域NPP时空变化特征及影响因子分析".草业科学 35.7(2018):1743-1753.