Quantitative Analysis of Moisture Effect on Black Soil Reflectance

LIU Huan-Jun; ZHANG Yuan-Zhi; ZHANG Xin-Le; ZHANG Bai; SONG Kai-Shan; WANG Zong-Ming; TANG Na

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Quantitative Analysis of Moisture Effect on Black Soil Reflectance

机译：水分对黑土反射率影响的定量分析

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Several studies have demonstrated that soil reflectance decreases with increasing soil moisture content,or increases when the soil moisture reaches a certain content;however,there are few analyses on the quantitative relationship between soil reflectance and its moisture,especially in the case of black soils in northeast China.A new moisture adjusting method was developed to obtain soil reflectance with a smaller moisture interval to describe the quantitative relationship between soil reflectance and moisture.For the soil samples with moisture contents ranging from air-dry to saturated,the changes in soil reflectance with soil moisture can be depicted using a cubic equation.Both moisture threshold (MT) and moisture inflexion (MI) of soil reflectance can also be determined by the equation.When the moisture range was smaller than MT,soil reflectance can be simulated with a linear model.However,for samples with different soil organic matter (OM),the parameters of the linear model varied regularly with the OM content.Based on their relationship,the soil moisture can be estimated from soil reflectance in the black soil region.

机译：多项研究表明，土壤反射率随土壤含水量的增加而降低，或随着土壤含水量的增加而增加;然而，很少有关于土壤反射率与其水分之间的定量关系的分析，特别是对于黑土而言。东北，开发了一种新的水分调节方法，以获取较小的水分间隔的土壤反射率，以描述土壤反射率与水分之间的定量关系。对于水分含量从风干到饱和的土壤样品，土壤反射率的变化可以用三次方程来描述土壤水分的反射率，也可以通过方程确定土壤反射率的水分阈值（MT）和水分屈折率（MI）。当水分范围小于MT时，可以使用线性模型。但是，对于具有不同土壤有机质（OM）的样品，线性模型的参数会变化根据它们之间的关系，可以从黑土区域的土壤反射率估算土壤水分。

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来源
《土壤圈（英文版）》 |2009年第4期|532-540|共9页
作者
LIU Huan-Jun; ZHANG Yuan-Zhi; ZHANG Xin-Le; ZHANG Bai; SONG Kai-Shan; WANG Zong-Ming; TANG Na;
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作者单位

College of Resources and Environmental Sciences,Northeast Agricultural University,Harbin 150030 (China);

Institute of Space and Earth Information Science,Chinese University of Hong Kong,Hong Kong (China);

College of Resources and Environmental Sciences,Northeast Agricultural University,Harbin 150030 (China);

Northeast Institute of Geography and Agricultural Ecology,Chinese Academy of Sciences,Changchun 130012 (China);

Northeast Institute of Geography and Agricultural Ecology,Chinese Academy of Sciences,Changchun 130012 (China);

Northeast Institute of Geography and Agricultural Ecology,Chinese Academy of Sciences,Changchun 130012 (China);

College of Resources and Environmental Sciences,Northeast Agricultural University,Harbin 150030 (China);

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收录信息中国科学引文数据库(CSCD);中国科技论文与引文数据库(CSTPCD);
原文格式 PDF
正文语种 chi
中图分类农业基础科学;
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Quantitative Analysis of Moisture Effect on Black Soil Reflectance

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