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A New Method for LAI Spatial Scaling based on Gaussian Distribution Theory

文献类型： 外文期刊

作者： Dong, Yingying 1 ; Wang, Jihua 1 ; Li, Cunjun 1 ; Xu, Xingang 1 ; Zhao, Jinling 1 ; Wang, Huifang 1 ; Huang, Wenjiang 1 ;

作者机构： 1.Beijing Res Ctr Informat Technol Agr, Beijing 100097, Peoples R China

关键词： Gaussian Distribution;Leaf Area Index (LAI);Scale Effects;Scaling Method;Spatial Scaling

期刊名称：PROGRESS IN ENVIRONMENTAL SCIENCE AND ENGINEERING (ICEESD2011), PTS 1-5

ISSN： 1022-6680

年卷期： 2012 年 356-360 卷

页码：

收录情况： SCI

摘要： Considering spatial heterogeneity of LAI and nonlinearity of its inversion model, a new spatial scaling method based on Gaussian distribution theory was proposed, aiming to quantitatively analyze scale effects and reveal scaling rules. In this method, higher spatial resolution data, obeying Gaussian distribution when the volume is large enough, were taken as baseline. Statistical parameters and Gaussian distribution forms were integrated into the process of spatial scaling. Barley was selected as experimental object. Firstly, multi-resolution data at 10m, 15m, 20m and 30m were constructed based on 5m resolution data through up-scaling algorithms. Secondly, extracting statistics of these data and constructing scaling data based on Gaussian distribution theory. Finally, quantitatively analyzing scale effects of LAI by introducing sensitive bands ordering and multivariate linear regression. Number of effective bands, R-2 of observations and estimations, and MRA could fully confirm the feasibility and validity of this proposed method.

  • 相关文献

[1]Comparison and Analysis of Data Upscaling Schemes for Predicting Crop Leaf Area Index. Dong, Yingying,Feng, Haikuan,Wang, Jihua,Li, Cunjun,Yang, Guijun,Huang, Wenjiang,Dong, Yingying,Wang, Jihua. 2012

[2]Estimating Winter Wheat Leaf Area Index From Ground and Hyperspectral Observations Using Vegetation Indices. Xie, Qiaoyun,Huang, Wenjiang,Zhang, Bing,Dong, Yingying,Xie, Qiaoyun,Chen, Pengfei,Song, Xiaoyu,Pascucci, Simone,Pignatti, Stefano,Laneve, Giovanni. 2016

[3]INTEGRATION OF MULTI-RESOLUTION DATA FOR CROP LAI ESTIMATION BASED ON CONTINUOUS WAVELET. Dong, Yingying,Wang, Jihua,Li, Cunjun,Yang, Guijun,Xu, Xingang,Zhao, Jinling,Huang, Wenjiang. 2012

[4]Comparison and Analysis of Data Assimilation Algorithms for Predicting the Leaf Area Index of Crop Canopies. Dong, Yingying,Wang, Jihua,Wang, Huifang,Li, Cunjun,Yang, Guijun,Wang, Qian,Liu, Feng,Zhao, Jinling,Huang, Wenjiang,Huang, Wenjiang. 2013

[5]Estimating Wheat Yield in China at the Field and District Scale from the Assimilation of Satellite Data into the Aquacrop and Simple Algorithm for Yield (SAFY) Models. Silvestro, Paolo Cosmo,Casa, Raffaele,Pignatti, Stefano,Pascucci, Simone,Yang, Hao,Li, Zhenhai,Yang, Guijun,Huang, Wenjiang. 2017

[6]Leaf Area Index Estimation Using Vegetation Indices Derived From Airborne Hyperspectral Images in Winter Wheat. Xie, Qiaoyun,Huang, Wenjiang,Liang, Dong,Huang, Linsheng,Zhang, Dongyan,Chen, Pengfei,Wu, Chaoyang,Yang, Guijun,Zhang, Jingcheng. 2014

[7]A model with leaf area index and apple size parameters for 2.4 GHz radio propagation in apple orchards. Guo, Xiu-ming,Guo, Xiu-ming,Yang, Xin-ting,Chen, Mei-xiang,Li, Ming,Wang, Yan-an.

[8]Integrating a very fast simulated annealing optimization algorithm for crop leaf area index variational assimilation. Dong, Yingying,Zhao, Chunjiang,Yang, Guijun,Chen, Liping,Wang, Jihua,Feng, Haikuan,Dong, Yingying,Zhao, Chunjiang.

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