| 含水量对黑土光谱特征影响的定量分析 |
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| 作者姓名： | 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： | LIU Huan-Jun,ZHANG Xin-Le,TANG Na(College of Resources and Environmental Sciences,Northeast Agricultural University,Harbin 150030 (China));ZHANG Yuan-Zhi(Institute of Space and Earth Information Science,Chinese University of Hong Kong,Hong Kong (China));ZHANG Bai,SONG Kai-Shan,WANG Zong-Ming(Northeast Institute of Geography and Agricultural Ecology,Chinese Academy of Sciences,Changchun 130012 (China)) |
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| 基金项目： | the National Key Technology Research and Development Program of China，the Knowledge Innovation Program of the Chinese Academy of Sciences，the Foundation of the Chinese Academy of Sciences for the Field Stations of Resources and Environment |
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| 摘 要： | 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.
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| 关 键 词： | 土壤水分含量 反射率 黑土区 定量分析 中国东北地区 定量关系 土壤样品 三次方程 |
| 收稿时间： | 16 October 2008 |
| 修稿时间： | 14 March 2009. |
Quantitative analysis of moisture effect on black soil reflectance |
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| LIU Huan-Jun,ZHANG Yuan-Zhi,ZHANG Xin-Le,ZHANG Bai,SONG Kai-Shan,WANG Zong-Ming,TANG Na.Quantitative analysis of moisture effect on black soil reflectance[J].Pedosphere,2009,19(4):532-540. |
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| Authors: | LIU Huan-Jun ZHANG Yuan-Zhi ZHANG Xin-Le ZHANG Bai SONG Kai-Shan WANG Zong-Ming and TANG Na |
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| Institution: | aCollege of Resources and Environmental Sciences, Northeast Agricultural University, Harbin 150030 (China);bInstitute of Space and Earth Information Science, Chinese University of Hong Kong, Hong Kong (China);cNortheast Institute of Geography and Agricultural Ecology, Chinese Academy of Sciences, Changchun 130012 (China) |
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| Abstract: | 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. |
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| Keywords: | black soil quantitative analysis remote sensing soil moisture spectral reflectance |
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