Estimation and analysis of net primary Productivity of Ruoergai wetland in China for the recent 10 years based on remote sensing

CORC > 成都山地灾害与环境研究所 > 中国科学院水利部成都山地灾害与环境研究所 > 数字山地与遥感应用中心

	Estimation and analysis of net primary Productivity of Ruoergai wetland in China for the recent 10 years based on remote sensing
	Jinhu Bian1 ; Ainong Li1 ; Wei Deng1,2
	2010
会议名称	Biennial International Conference on Ecological Informatics and Ecosystem Conservation (ISEIS)
会议日期	2010-8-27～29
会议地点	Beijing, PEOPLES R CHINA
关键词	Ruoergai Wetland NPP Light Utilization Efficiency Parameter Optimization CASA
页码	288-301
通讯作者	Ainong Li
英文摘要	Ruoergai wetland is the biggest plateau peat wetland in the world. It plays an important role in the ecological construction and environmental protection for the upper reaches of Yangtze and yellow river. Using remote sensing technology to monitor annual and inter-annual NPP change is the key to evaluate the health condition of ecosystem of the wetland. In this study, an accuracy evaluation and model optimization function were designed to optimize the Light Utilization Efficiency (LUE) parameter of Carnegie-Ames-Stanford Approach (CASA) model, and optimized model was used to estimate and analysis spatial distribution and seasonal and annual variation of the Net Primary Productivity (NPP) for the recent 10 years of Ruoergai wetland. Results showed that, (1) Maximum light utilization efficiency used in the original model cannot reflect spatial heterogeneity of vegetation distribution. Parameter of CASA model need to be further optimized when applied in the regional scale. (2) Spatial distribution pattern of NPP in Ruoergai wetland is highly correlated with topography factor. (3) NPP of Ruoergai wetland shows a slight decline trend on the time series for the recent 10 years and area of the slight decline trend is about 67%, and there are 22% grassland who's NPP is severe decrease.
收录类别	SCI ; EI
会议主办者	Beijing Normal Univ; Int Soc Environm Informat Sci
会议录	INTERNATIONAL CONFERENCE ON ECOLOGICAL INFORMATICS AND ECOSYSTEM CONSERVATION (ISEIS 2010)
会议录出版者	ELSEVIER SCIENCE BV, SARA BURGERHARTSTRAAT 25, PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
语种	英语
ISSN号	1878-0296
WOS记录号	WOS:000309520900035
内容类型	会议论文
源URL	[http://192.168.143.20:8080/handle/131551/5345]
专题	成都山地灾害与环境研究所_数字山地与遥感应用中心成都山地灾害与环境研究所_山区发展研究中心
作者单位	1.Institute of Mountain Hazards and Environment, CAS 2.Department of Geography, University of Maryland, College Park, MD 20742, United States
推荐引用方式 GB/T 7714	Jinhu Bian,Ainong Li,Wei Deng. Estimation and analysis of net primary Productivity of Ruoergai wetland in China for the recent 10 years based on remote sensing[C]. 见:Biennial International Conference on Ecological Informatics and Ecosystem Conservation (ISEIS). Beijing, PEOPLES R CHINA. 2010-8-27～29.