DOI: 10.1016/j.jag.2013.04.002
Scopus记录号: 2-s2.0-84888247313
论文题名: The assimilation of spectral sensing and the WOFOST model for the dynamic simulation of cadmium accumulation in rice tissues
作者: Wu L ; , Liu X ; , Wang P ; , Zhou B ; , Liu M ; , Li X
刊名: International Journal of Applied Earth Observation and Geoinformation
ISSN: 15698432
出版年: 2013
卷: 25, 期: 1 起始页码: 66
结束页码: 75
语种: 英语
英文关键词: Assimilation
; Cadmium accumulation
; Crop growth model
; Dynamic simulation
Scopus关键词: bioaccumulation
; cadmium
; computer simulation
; crop plant
; growth rate
; remote sensing
; rice
; spectral analysis
英文摘要: The accurate detection of heavy metal-induced stress on crop growth is important for food security and agricultural, ecological and environmental protection. Spectral sensing offers an efficient and undamaged observation tool to monitor soil and vegetation contamination. This study proposed a methodology for dynamically estimating the total cadmium (Cd) accumulation in rice tissues by assimilating spectral information into WOFOST (World Food Study) model. Based on the differences among ground hyperspectral data of rice in three experiments fields under different Cd concentration levels, the spectral indices MCARI1, NREP and RH were selected to reflect the rice stress condition and dry matter production of rice. With assimilating these sensitive spectral indices into the WOFOST + PROSPECT + SAIL model to optimize the Cd pollution stress factor fwi, the dynamic dry matter production processes of rice were adjusted. Based on the relation between dry matter production and Cd accumulation, we dynamically simulating the Cd accumulation in rice tissues. The results showed that the method performed well in dynamically estimating the total amount of Cd accumulation in rice tissues with R2 over 85%. This study suggests that the proposed method of integrating the spectral information and the crop growth model could successfully dynamically simulate the Cd accumulation in rice tissues. © 2013 Elsevier B.V. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/79867
Appears in Collections: 气候变化事实与影响
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作者单位: School of Information Engineering, China University of Geosciences, 29 Xueyuan Road, Beijing 100083, China; School of Geography Science, Northeast Normal University, 5268 Renmin Street, Changchun 130024, China
Recommended Citation:
Wu L,, Liu X,, Wang P,et al. The assimilation of spectral sensing and the WOFOST model for the dynamic simulation of cadmium accumulation in rice tissues[J]. International Journal of Applied Earth Observation and Geoinformation,2013-01-01,25(1)