Knowledge Resource Center for Ecological Environment in Arid Area
DOI | 10.1016/j.jag.2015.12.001 |
Modeling net primary productivity of terrestrial ecosystems in the semi-arid climate of the Mongolian Plateau using LSWI-based CASA ecosystem model | |
Bao, Gang1,2; Bao, Yuhai1; Qin, Zhihao3; Xin, Xiaoping3; Bao, Yulong1,2; Bayarsaikan, Sainbuyin4; Zhou, Yi5; Chuntai, Bilegtmandakh6 | |
通讯作者 | Bao, Yuhai |
来源期刊 | INTERNATIONAL JOURNAL OF APPLIED EARTH OBSERVATION AND GEOINFORMATION
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ISSN | 0303-2434 |
出版年 | 2016 |
卷号 | 46页码:84-93 |
英文摘要 | Since the estimate of moisture stress coefficients (MSC) in the current Carnegie-Ames-Stanford-Approach (CASA) model still requires considerable inputs from ground meteorological data and many soil parameters, here we present a modified CASA model by introducing the land-surface water index (LSWI) and scaled precipitation to model the vegetation net primary productivity (NPP) in the arid and semiarid climate of the Mongolian Plateau. The field-observed NPP data and a previously proposed model (the Yu-CASA model) were used to evaluate the performance of our LSWI-based CASA model. The results show that the NPP predicted by both the LSWI-based CASA model and the Yu-CASA model showed good agreement with the observed NPP in the grassland ecosystems in the study area, with coefficients of determination of 0.717 and 0.714, respectively. The LSWI-based CASA model also performed comparably with the Yu-CASA model at both biome and per-pixel scales when keeping other inputs unchanged, with a difference of approximately 16 g C in the growing-season total NPP and an average value of 2.3 gC bias for each month. This indicates that, unlike an earlier method that estimated MSC based entirely on climatic variables or a soil moisture model, the method proposed here simplifies the model structure, reduces the need for ground measurements, and can provide results comparable with those from earlier models. The LSWI-based CASA model is potentially an alternative method for modelling NPP for a wide range of vegetation types in the Mongolian Plateau. (C) 2015 Elsevier B.V. All rights reserved. |
英文关键词 | Net primary productivity Land-surface water index CASA model Mongolian Plateau (semi-) Arid climate |
类型 | Article |
语种 | 英语 |
国家 | Peoples R China ; Mongolia |
收录类别 | SCI-E |
WOS记录号 | WOS:000369206900008 |
WOS关键词 | GROSS PRIMARY PRODUCTION ; LIGHT USE EFFICIENCY ; REMOTE-SENSING DATA ; INNER-MONGOLIA ; SURFACE-TEMPERATURE ; VEGETATION INDEX ; MODIS ; SATELLITE ; GRASSLAND ; DYNAMICS |
WOS类目 | Remote Sensing |
WOS研究方向 | Remote Sensing |
资源类型 | 期刊论文 |
条目标识符 | http://119.78.100.177/qdio/handle/2XILL650/193669 |
作者单位 | 1.Inner Mongolia Normal Univ, Inner Mongolia Key Lab Remote Sensing & Geog Info, Hohhot 010022, Peoples R China; 2.Inner Mongolia Normal Univ, Coll Geog Sci, Hohhot 010022, Peoples R China; 3.Chinese Acad Agr Sci, Inst Agroresources & Reg Planning, Beijing 100081, Peoples R China; 4.Mongolian Acad Sci, Inst Geog, Ulaanbaatar 14192, Mongolia; 5.Shanxi Normal Univ, Sch Geog, Linfen 041000, Peoples R China; 6.Khovd Univ, Dept Geog, Khovd 84140, Mongolia |
推荐引用方式 GB/T 7714 | Bao, Gang,Bao, Yuhai,Qin, Zhihao,et al. Modeling net primary productivity of terrestrial ecosystems in the semi-arid climate of the Mongolian Plateau using LSWI-based CASA ecosystem model[J],2016,46:84-93. |
APA | Bao, Gang.,Bao, Yuhai.,Qin, Zhihao.,Xin, Xiaoping.,Bao, Yulong.,...&Chuntai, Bilegtmandakh.(2016).Modeling net primary productivity of terrestrial ecosystems in the semi-arid climate of the Mongolian Plateau using LSWI-based CASA ecosystem model.INTERNATIONAL JOURNAL OF APPLIED EARTH OBSERVATION AND GEOINFORMATION,46,84-93. |
MLA | Bao, Gang,et al."Modeling net primary productivity of terrestrial ecosystems in the semi-arid climate of the Mongolian Plateau using LSWI-based CASA ecosystem model".INTERNATIONAL JOURNAL OF APPLIED EARTH OBSERVATION AND GEOINFORMATION 46(2016):84-93. |
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