干旱区生态环境知识资源中心(Arid): 基于MODIS数据的陕西省植被净初级生产力与实际蒸散的变化关系分析

Arid

	基于MODIS数据的陕西省植被净初级生产力与实际蒸散的变化关系分析
其他题名	Analysis on Relationship Between Net Primary Productivity and Evapotranspiration Based on MODIS Data in Shaanxi Province
	王娟; 何慧娟; 卓静; 董金芳
来源期刊	水土保持通报
ISSN	1000-288X
出版年	2017
卷号	37 期号:3 页码:264-269
中文摘要	[目的]分析陕西省植被净初级生产力(NPP)及实际蒸散量(ET),为生态环境中碳循环、水循环特征提供理论支持。[方法]基于美国航天局(NASA)提供的净初级生产力产品(MOD17 A3)及蒸散产品(MOD16)数据,利用GIS与数理统计等方法,对陕西省20002014年植被NPP与ET的时空分布特征及其关系进行分析。[结果]陕西省植被NPP与ET的分布特征均为南高北低;20002014年陕西省植被NPP在波动中呈现上升趋势,其中陕北地区增加最大,陕南地区增加最不显著;陕西省ET年际变化呈波动状态。植被NPP与ET空间相关性较显著,陕北地区相关系数极高,而陕南地区相关性并不显著。[结论]在较为干旱区域植被NPP与ET的关系更为密切。
英文摘要	[Objective] Analyzing the vegetation net primary productivity(NPP) and the actual evapotranspiration(ET) in Shaanxi Province, to provide theoretical support with regard to carbon cycle, water cycle characteristics of ecological environment. [Methods] Based on data of the NASA products of net primary productivity(MOD17 A3) and evapotranspiration(MOD16), the spatial and temporal variation characteristics and relationships between NPP and ET in 20002014 of Shaanxi Province were analyzed by using the methods of GIS and mathematical statistics. [Results] The vegetation NPP and ET both showed a spatial distribution characteristics by gradually decreasing from the south to the north. In 20002014,interannual variability of Shaanxi vegetation NPP presented an increasing trend. The most significant increased region was Shanbei, the second was Guanzhong, and the lowest region was Southern Shaanxi; interannual variability of ET was not significant, and showed a trend of fluctuations. Spatial correlation between NPP and ET was significant for overall province,but regional difference existed: correlation coefficient in Shanbei region was highly significant, whereas in the southern Shaanxi region, it was not significant. [Conclusion] The vegetation NPP had closer relations with ET in arid area.
中文关键词	植被NPP ; ET, MODIS数据 ; 空间特征 ; 陕西省
英文关键词	NPP (net primary productivity) ET(evapotranspiration) MODIS spatial distribution Shaanxi Province
语种	中文
国家	中国
收录类别	CSCD
WOS类目	METEOROLOGY ATMOSPHERIC SCIENCES
WOS研究方向	Meteorology & Atmospheric Sciences
CSCD记录号	CSCD:6023676
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/236636
作者单位	陕西省农业遥感信息中心, 西安, 陕西 710014, 中国
推荐引用方式 GB/T 7714	王娟,何慧娟,卓静,等. 基于MODIS数据的陕西省植被净初级生产力与实际蒸散的变化关系分析[J],2017,37(3):264-269.
APA	王娟,何慧娟,卓静,&董金芳.(2017).基于MODIS数据的陕西省植被净初级生产力与实际蒸散的变化关系分析.水土保持通报,37(3),264-269.
MLA	王娟,et al."基于MODIS数据的陕西省植被净初级生产力与实际蒸散的变化关系分析".水土保持通报 37.3(2017):264-269.