干旱区生态环境知识资源中心(Arid): Evaluation and Validation of the Net Primary Productivity of the Zoige Wetland Based on Grazing Coupled Remote Sensing Process Model

Arid

DOI	10.1109/JSTARS.2021.3125099
	Evaluation and Validation of the Net Primary Productivity of the Zoige Wetland Based on Grazing Coupled Remote Sensing Process Model
	He, Li; Li, Chengying; He, Zhengwei; Liu, Xian; Qu, Rui
通讯作者	He, ZW (corresponding author)，Chengdu Univ Technol, State Key Lab Geohazard Prevent & Geoenvironm Pro, Chengdu 610059, Peoples R China. ; He, ZW (corresponding author)，Chengdu Univ Technol, Coll Tourism & Urban Rural Planning, Chengdu 610059, Peoples R China.
来源期刊	IEEE JOURNAL OF SELECTED TOPICS IN APPLIED EARTH OBSERVATIONS AND REMOTE SENSING
ISSN	1939-1404
EISSN	2151-1535
出版年	2022
卷号	15
英文摘要	Zoige wetland is located in the southeastern edge of the Qinghai-Tibet Plateau, in recent years, the wetland local area grassland productivity decline, land sanding, and other serious degradation phenomenon. Using remote sensing and hydrology data combined with the basic principles of vegetation ecology, we applied the Carnegie-Ames-Stanford Approach (CASA) model and Boreal Ecosystem Productivity Simulator (BEPS) model to invert the net primary productivity (NPP) of the Zoige wetland ecosystem and then identified the deficiencies of the two models. In this article, we tested the factors that influence the light use efficiency of vegetation and considered the effects of livestock grazing on grassland ecosystems and wetland moisture content on vegetation growth. A new grazing coupled remote sensing process (GCRSP) model suitable for the productivity of the Zoige wetland was proposed. Field survey data were combined with the CASA model, BEPS model, and Moderate Resolution Imaging Spectroradiometer (MODIS) NPP product, and the accuracy of the proposed GCRSP model was analyzed at regional level. The results show that after fitting the field measurements to the GCRSP model, the fitted variance between the model and the measured data is 0.84, which is larger than the variance between the other two methods and the measured data. In addition, the variance of the linear fit between the GCRSP model and the MODIS NPP product was 0.11, which was relatively small, indicating that the regional-scale GCRSP model was relatively accurate for the Zoige wetland NPP. Therefore, this model was suitable for the inversion of regional-scale NPP. The results indicated that the average grassland NPP of the Zoige wetland was 487.57 gC/m(2), and larger NPP values were distributed near the rivers and wetland and smaller NPP values were distributed in the mountain glacier and desertified land areas. These results were consistent with the regional characteristics. This article provided technical and theoretical support for the desertification management of the Zoige grassland and a new method for studying vegetation NPP, and the findings could help improve the accuracy of regional-scale vegetation NPP estimates.
英文关键词	Biological system modeling Adaptation models Wetlands Vegetation mapping Licenses Remote sensing Productivity Grazing couple remote sensing process (GCRSP) model light use efficiency net primary productivity (NPP) stocking rate Zoige wetland
类型	Article
语种	英语
开放获取类型	gold
收录类别	SCI-E
WOS记录号	WOS:000736740000008
WOS关键词	ECOSYSTEM ; CLIMATE ; SATELLITE
WOS类目	Engineering, Electrical & Electronic ; Geography, Physical ; Remote Sensing ; Imaging Science & Photographic Technology
WOS研究方向	Engineering ; Physical Geography ; Remote Sensing ; Imaging Science & Photographic Technology
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/376840
作者单位	[He, Li; Li, Chengying; He, Zhengwei; Qu, Rui] Chengdu Univ Technol, State Key Lab Geohazard Prevent & Geoenvironm Pro, Chengdu 610059, Peoples R China; [He, Li; Li, Chengying; He, Zhengwei; Qu, Rui] Chengdu Univ Technol, Coll Tourism & Urban Rural Planning, Chengdu 610059, Peoples R China; [Liu, Xian] Southern Illinois Univ, Dept Plant Biol, Carbondale, IL 62901 USA
推荐引用方式 GB/T 7714	He, Li,Li, Chengying,He, Zhengwei,et al. Evaluation and Validation of the Net Primary Productivity of the Zoige Wetland Based on Grazing Coupled Remote Sensing Process Model[J],2022,15.
APA	He, Li,Li, Chengying,He, Zhengwei,Liu, Xian,&Qu, Rui.(2022).Evaluation and Validation of the Net Primary Productivity of the Zoige Wetland Based on Grazing Coupled Remote Sensing Process Model.IEEE JOURNAL OF SELECTED TOPICS IN APPLIED EARTH OBSERVATIONS AND REMOTE SENSING,15.
MLA	He, Li,et al."Evaluation and Validation of the Net Primary Productivity of the Zoige Wetland Based on Grazing Coupled Remote Sensing Process Model".IEEE JOURNAL OF SELECTED TOPICS IN APPLIED EARTH OBSERVATIONS AND REMOTE SENSING 15(2022).