干旱区生态环境知识资源中心(Arid): 基于MODIS和TRMM数据的准格尔南缘植被净初级生产力估算与分析

Arid

	基于MODIS和TRMM数据的准格尔南缘植被净初级生产力估算与分析
其他题名	Estimation of Vegetation Net Primary Productivity in the South Border of Junggar Basin Using MODIS and TRMM Data
	王旭阳; 张显峰; 赵杰鹏; 廖春华
来源期刊	地理与地理信息科学
ISSN	1672-0504
出版年	2011
卷号	27 期号:2 页码:21-25,115
中文摘要	利用MODIS,TRMM遥感传感器数据和CASA模型,估算了新疆准格尔盆地南缘2000-2009年的植被净初级生产力(Net Primary Productivity,NPP)信息.在CASA模型实现中,利用TRMM数据反演研究区降水量,减少了依靠地面稀疏气象站点插值带来的误差,从而提高了模型估算精度.同时,分析了准格尔南缘的石河子及周边地区2000年以来植被NPP的变化趋势及其影响因素.结果表明,区域气候,植被覆盖类型与人类活动是影响该地区植被NPP波动的主导因素,其中植被类型和降水量的影响尤其重要,研究结果对进一步解析准格尔南缘生态系统演化和研究碳循环过程具有参考价值
英文摘要	The estimation of vegetation Net Primary Productivity(NPP) in the south border of the Junggar Basin, Xinjiang during 2000-2009 was conducted using MODIS and TRMM data and the CASA model. The TRMM data rather than ground observations were used to estimate the rainfall data that were incorporated into the CASA model. This improved the implementation of the CASA model in the study area, and can result in better estimation of the NPP, especially in the mountainous and desert areas where no meteorological observation is available. The CASA estimation of the NPP was then verified using ground quadrate data collected in 2009 and the correlation coefficient between them is approximately 0.75, which indicates a relatively accurate estimation of the NPP values. In addition, ten years NPP values through 2000 to 2009 in the study area were also estimated using the CASA model,MODIS and TRMM data. The variations of the NPP values through 2000 to 2009 were examined and the correlation with the climate factors and vegetation types was also statistically analyzed. The result shows that the NPP values of the farmland crops increased through the ten years, and the vegetation type and rainfall are the main driving factors that caused the NPP fluctuations in this area in the last ten years. These results are very valuable to further analysis of the arid ecosystem evolution and characterization of the carbon cycle in the southern border of the Junggar Basin
中文关键词	净初级生产力 ; CASA模型 ; 干旱区
英文关键词	MODIS TRMM NPP CASA model MODIS TRMM arid region
语种	中文
国家	中国
收录类别	CSCD
WOS类目	PLANT SCIENCES ; REMOTE SENSING
WOS研究方向	Plant Sciences ; Remote Sensing
CSCD记录号	CSCD:4178355
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/226291
作者单位	北京大学遥感与地理信息系统研究所, 北京 100817, 中国
推荐引用方式 GB/T 7714	王旭阳,张显峰,赵杰鹏,等. 基于MODIS和TRMM数据的准格尔南缘植被净初级生产力估算与分析[J],2011,27(2):21-25,115.
APA	王旭阳,张显峰,赵杰鹏,&廖春华.(2011).基于MODIS和TRMM数据的准格尔南缘植被净初级生产力估算与分析.地理与地理信息科学,27(2),21-25,115.
MLA	王旭阳,et al."基于MODIS和TRMM数据的准格尔南缘植被净初级生产力估算与分析".地理与地理信息科学 27.2(2011):21-25,115.