干旱区生态环境知识资源中心(Arid): 20012010年黄河流域生态系统植被净第一性生产力变化及气候因素驱动分析

Arid

	20012010年黄河流域生态系统植被净第一性生产力变化及气候因素驱动分析
其他题名	Change of vegetation net primary productivity in Yellow River watersheds from 2001 to 2010 and its climatic driving factors analysis
	陈强 1; 陈云浩 1; 王萌杰 1; 蒋卫国 2; 侯鹏 3; 李营 3
来源期刊	应用生态学报
ISSN	1001-9332
出版年	2014
卷号	25 期号:10 页码:2811-2818
中文摘要	基于MODIS-NDVI遥感数据,利用CASA模型分析黄河流域20012010年植被净第一性生产力(NPP)的空间分布格局,并结合同期气温和降水量数据,分别从不同空间和时间尺度上分析了黄河流域6种生态系统类型区域植被NPP的变化趋势,并对其与气候因素的相关关系进行分析.结果表明:植被NPP空间分布呈西北低、东南高的分布特征,平均NPP年总量为108.53 Tg C,植被NPP的分布与生态系统类型呈现较高的相关性;20012010年,植被NPP总体呈上升趋势但波动较大,55.4%的面积呈现增加趋势,不同生态系统类型区域呈现不同的变化趋势;在年际水平上,黄河流域植被NPP变化与气候因素没有显著相关性,但在月际水平上呈现了较高的相关性,降水量和气温对植被NPP变化的影响作用相当;不同生态系统类型对气候因素呈现不同的相关性质以及时滞效应,草地对降水量的响应存在一定程度的时滞效应,荒漠对气温存在时滞效应.
英文摘要	Based on the MODIS-NDVI remotely sensed imagery, this paper analyzed the spatial distribution of vegetation net primary production (NPP) calculated by CASA model in Yellow River watersheds from 2001 to 2010. Associated with the temperature and precipitation data in the same period, this article respectively analyzed the change trends of vegetation NPP in six ecosystems with different spatial and temporal scales, and the relationship between NPP and climate factors. The results indicated that in terms of spatial scale,the vegetation NPP gradually reduced from northwest to southeast, the average of annual NPP was 108. 53 Tg C, and the spatial distribution of vegetation NPP was highly related with the land cover types. In terms of temporal scale, the vegetation NPP gradually increased from 2001 to 2010, but this change trend had large differences in these regions. On annual level, the vegetation NPP had no significant correlation with climate factors, but precipitation and temperature had considerable impacts on the vegetation NPP on monthly level. The correlations between NPP and climate factors were different in different ecosystems, so did the time lag effect of the climate factors. The air temperature response of the NPP variation was relatively sensitive in forest ecosystem and the precipitation response was significant in grassland and wetland ecosystems. Additionally, the precipitation response of the NPP variation in grassland ecosystem had time lag effect and so did the air temperature response in desert ecosystem.
中文关键词	黄河流域 ; 生态系统 ; 植被净第一性生产力 ; 气候因素 ; 相关性
英文关键词	Yellow River watersheds ecosystem vegetation net primary productivity climate factors correlation
语种	中文
国家	中国
收录类别	CSCD
WOS类目	ECOLOGY
WOS研究方向	Environmental Sciences & Ecology
CSCD记录号	CSCD:5266329
来源机构	北京师范大学
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/231992
作者单位	1.北京师范大学资源学院, 地表过程与资源生态国家重点实验室, 北京 100875, 中国; 2.北京师范大学, 地表过程与资源生态国家重点实验室, 北京 100875, 中国; 3.中国环境保护部卫星环境应用中心, 北京 100094, 中国
推荐引用方式 GB/T 7714	陈强,陈云浩,王萌杰,等. 20012010年黄河流域生态系统植被净第一性生产力变化及气候因素驱动分析[J]. 北京师范大学,2014,25(10):2811-2818.
APA	陈强,陈云浩,王萌杰,蒋卫国,侯鹏,&李营.(2014).20012010年黄河流域生态系统植被净第一性生产力变化及气候因素驱动分析.应用生态学报,25(10),2811-2818.
MLA	陈强,et al."20012010年黄河流域生态系统植被净第一性生产力变化及气候因素驱动分析".应用生态学报 25.10(2014):2811-2818.