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MONITORING WINTER WHEAT FREEZE INJURY BASED ON MULTI-TEMPORAL DATA

文献类型： 外文期刊

作者： Wang, Huifang 1 ; Gu, Xiaohe 1 ; Wang, Jihua 1 ; Dong, Yingying 1 ;

作者机构： 1.Zhejiang Univ, Inst Agr Remote Sensing & Informat Technol Applic, Hangzhou 310058, Zhejiang, Peoples R China

2.Beijing Acad Agr & Forestry Sci, Beijing Res Ctr Informat Technol Agr, Beijing 100097, Peoples R China

关键词： Freeze Injury;Multi-Temporal Data;MLR Model;Survival Rate

期刊名称：INTELLIGENT AUTOMATION AND SOFT COMPUTING （ 影响因子：1.647； 五年影响因子：1.469 ）

ISSN： 1079-8587

年卷期： 2012 年 18 卷 8 期

页码：

收录情况： SCI

摘要： Winter wheat freeze injury is one of the most serious damages in northern China. Timely and accurately monitoring freeze injury can provide quantitative damage assessment and decision support for after-injury field management. Freeze injury stress is directly related to the deviation of winter wheat population. This paper aimed to monitor the spatial-temporal distribution as well as the severity of winter wheat freeze injury with multi-temporal data. The field investigations were conducted in the wintering and setting stages, corresponding with the acquisition moderate resolution date of TM data and HJ-1A data. A multiple linear regression (MLR) model proposed in this paper by analyzing the relationship between plants number per mu and varieties of vegetation indices having strong correlation with wheat growth vigor. The survival rate serving as an efficient indicator of freeze injury severity was applied to generate freeze injury distribution map. The results show that assessment of survival rate grade can be utilized to not only monitor the freeze injury area and distribution of winter wheat, but also provide a scientific basis for measuring after-injury field management.

  • 相关文献

[1]Estimating leaf SPAD values of freeze-damaged winter wheat using continuous wavelet analysis. Wang, Hui-fang,Huo, Zhi-guo,Zhou, Guang-sheng,Wu, Li,Wang, Hui-fang,Liao, Qin-hong,Feng, Hai-kuan,Liao, Qin-hong.

[2]Hyperspectral characteristics of winter wheat under freezing injury stress and LWC inversion model. Wang, Huifang,Wang, Jihua,Wang, Qian,Miao, Naizhe,Huang, Wenjiang,Feng, Haikuang,Dong, Yingying,Wang, Huifang,Wang, Jihua. 2012

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