| 基于AMSR-E数据估测华北平原及东北地区土壤田间持水量 |
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| 引用本文： | 杨绍锷,吴炳方,闫娜娜.基于AMSR-E数据估测华北平原及东北地区土壤田间持水量[J].土壤通报,2012(2):301-305. |
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| 作者姓名： | 杨绍锷 吴炳方 闫娜娜 |
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| 作者单位： | 广西农业科学院农业资源与环境研究所;中国科学院遥感应用研究所 |
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| 基金项目： | 广西农业科学院科技发展基金和基本科研业务费项目(201010Z);中国科学院知识创新工程重大项目(KSCX-YW-09-01)资助 |
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| 摘 要： | 对田间持水量的遥感获取方法进行了探讨,基于传统的田间持水量测定方法--围框淹灌法的思路,利用AMSR-E(Advanced Microwave Scanning Radiometer,即高级微波扫描辐射计)数据高时间分辨率的特点,提出了基于AMSR-E数据估测田间持水量的方法,并采用2003~2007年的AMSR-E数据制作了我国华北平原及东北地区的田间持水量分布图。结果显示东北地区北部、河南东部、安徽北部以及江苏北部等地区的田间持水量较高;由AMSR-E数据获取的田间持水量明显小于气象站点的测定值,与实测值的相关系数R2为0.522,与实测值有显著的相关关系,表明AMSR-E数据具有正确反映田间持水量的潜力。
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| 关 键 词： | 田间持水量 AMSR-E 遥感 华北平原 东北地区 |
Estimation of Soil Field Capacity in North China Plain and Northeast China Based on AMSR-E Data |
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| YANG Shao-e,WU Bing-fang,YAN Na-na.Estimation of Soil Field Capacity in North China Plain and Northeast China Based on AMSR-E Data[J].Chinese Journal of Soil Science,2012(2):301-305. |
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| Authors: | YANG Shao-e WU Bing-fang YAN Na-na |
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| Institution: | 1.Agricultural Resources and Environment Research Institute,Guangxi Academy of Agricultural Sciences,Nanning 530007,China; 2.Institute of Remote Sensing Applications Chinese Academy of Sciences,Beijing 100101,China.) |
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| Abstract: | This study investigates on the method of estimating Field Capacity(FC) with remote sensing data on the basis of the idea of the traditional FC measuring method,Ponded-frame method and taking advantage of the high time resolution of AMSR-E(Advanced Microwave Scanning Radiometer) data.The method is proposed to estimate FC on the basis of AMSR-E data.The 2003-2007 AMSR-E data is adopted to produce the FC map of North China Plain and Northeast China.The results show that the FC is relatively high in north of Northeast China,east of Henan province,north of Anhui province,and north of Jiangsu province.The AMSR-E derived FC is significantly lower than the observed value from meteorological stations.The correlation(R2) between the AMSR-E derived FC and the observed value is 0.522,which indicates that there is a significant correlation between the AMSR-E derived FC and the observed value,and the AMSR-E data has the potential to correctly derive FC. |
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| Keywords: | Field capacity AMSR-E Remote sensing North China Plain Northeast China |
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