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ON THE DIVISION OF NORTH BOUNDARY OF SUBTROPICAL ZONE ACCORDING TO THE COMPOSITIONS AND PROPERTIES OF SOIL HUMUS

MA Jian-hua ZHAO Qing-liang HAN Jin-xian

MA Jian-hua, ZHAO Qing-liang, HAN Jin-xian. ON THE DIVISION OF NORTH BOUNDARY OF SUBTROPICAL ZONE ACCORDING TO THE COMPOSITIONS AND PROPERTIES OF SOIL HUMUS[J]. 中国地理科学, 2002, 12(2): 171-175.
引用本文: MA Jian-hua, ZHAO Qing-liang, HAN Jin-xian. ON THE DIVISION OF NORTH BOUNDARY OF SUBTROPICAL ZONE ACCORDING TO THE COMPOSITIONS AND PROPERTIES OF SOIL HUMUS[J]. 中国地理科学, 2002, 12(2): 171-175.
MA Jian-hua, ZHAO Qing-liang, HAN Jin-xian. ON THE DIVISION OF NORTH BOUNDARY OF SUBTROPICAL ZONE ACCORDING TO THE COMPOSITIONS AND PROPERTIES OF SOIL HUMUS[J]. Chinese Geographical Science, 2002, 12(2): 171-175.
Citation: MA Jian-hua, ZHAO Qing-liang, HAN Jin-xian. ON THE DIVISION OF NORTH BOUNDARY OF SUBTROPICAL ZONE ACCORDING TO THE COMPOSITIONS AND PROPERTIES OF SOIL HUMUS[J]. Chinese Geographical Science, 2002, 12(2): 171-175.

ON THE DIVISION OF NORTH BOUNDARY OF SUBTROPICAL ZONE ACCORDING TO THE COMPOSITIONS AND PROPERTIES OF SOIL HUMUS

基金项目: Under the auspices of the Natural Science Foundation of Henan(No.914071300).
详细信息
    作者简介:

    MA Jian-hua(1958- ),male,a native of Qingfeng County of Henan Province, professor. His research interests include physical geography and environment science.

  • 中图分类号: P934

ON THE DIVISION OF NORTH BOUNDARY OF SUBTROPICAL ZONE ACCORDING TO THE COMPOSITIONS AND PROPERTIES OF SOIL HUMUS

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出版历程
  • 收稿日期:  2002-01-04
  • 刊出日期:  2002-06-20

ON THE DIVISION OF NORTH BOUNDARY OF SUBTROPICAL ZONE ACCORDING TO THE COMPOSITIONS AND PROPERTIES OF SOIL HUMUS

    基金项目:  Under the auspices of the Natural Science Foundation of Henan(No.914071300).
    作者简介:

    MA Jian-hua(1958- ),male,a native of Qingfeng County of Henan Province, professor. His research interests include physical geography and environment science.

  • 中图分类号: P934

摘要: In this paper predecessors'achievements about the division between subtropical zone and warm temperate zone on the south slope of Funiu Mountain are firstly summarized, and the cause why these viewpoints about the division are different also has been presented. Seven soil profiles at different heights above sea level are dug along the south slope of Funiu Mountain. Many compositions and properties of soil humus have been analyzed in laboratory. A comprehensive study has been made about the division according to the compositions and properties of soil humus with mathematical method. During the analysis process eight indexes have been used, such as altitude, organic carbon, humic acid (HA), fulvic acid (FA), the ratio of humic acid and fulvic acid (HA/FA), two extinction coefficients (E4,E6), and their ratio (E4/E6).The result indicates that the boundary is at about 1000 meters above sea level.

English Abstract

MA Jian-hua, ZHAO Qing-liang, HAN Jin-xian. ON THE DIVISION OF NORTH BOUNDARY OF SUBTROPICAL ZONE ACCORDING TO THE COMPOSITIONS AND PROPERTIES OF SOIL HUMUS[J]. 中国地理科学, 2002, 12(2): 171-175.
引用本文: MA Jian-hua, ZHAO Qing-liang, HAN Jin-xian. ON THE DIVISION OF NORTH BOUNDARY OF SUBTROPICAL ZONE ACCORDING TO THE COMPOSITIONS AND PROPERTIES OF SOIL HUMUS[J]. 中国地理科学, 2002, 12(2): 171-175.
MA Jian-hua, ZHAO Qing-liang, HAN Jin-xian. ON THE DIVISION OF NORTH BOUNDARY OF SUBTROPICAL ZONE ACCORDING TO THE COMPOSITIONS AND PROPERTIES OF SOIL HUMUS[J]. Chinese Geographical Science, 2002, 12(2): 171-175.
Citation: MA Jian-hua, ZHAO Qing-liang, HAN Jin-xian. ON THE DIVISION OF NORTH BOUNDARY OF SUBTROPICAL ZONE ACCORDING TO THE COMPOSITIONS AND PROPERTIES OF SOIL HUMUS[J]. Chinese Geographical Science, 2002, 12(2): 171-175.

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