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ZHANG Lǜ-qin, ZHANG Ming-kui. Changes of organic C, N and P pools in red soil in transformation between agricultural land and forestry land[J]. Journal of Zhejiang A&F University, 2006, 23(1): 75-79.
Citation: ZHANG Lǜ-qin, ZHANG Ming-kui. Changes of organic C, N and P pools in red soil in transformation between agricultural land and forestry land[J]. Journal of Zhejiang A&F University, 2006, 23(1): 75-79.

Changes of organic C, N and P pools in red soil in transformation between agricultural land and forestry land

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国家自然科学基金资助项目(49601013)

  • Received Date: 2005-04-29
  • Rev Recd Date: 2005-07-01
  • Publish Date: 2006-02-20
通讯作者: 陈斌, bchen63@163.com
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    沈阳化工大学材料科学与工程学院 沈阳 110142

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Changes of organic C, N and P pools in red soil in transformation between agricultural land and forestry land

Funds:

国家自然科学基金资助项目(49601013)

Abstract: Physical fractionation and chemical-analysis were used to assess the composition and distribution of organic C , N and P in different sizes of water-stable aggregates of red soil under different land uses .The change mechanism of soil nutrients in transformation between forestry land and agricultural land was analyzed .The 27 soil samples were collected for testing and were divided into three groups :natural forest land , agricultural land and afforested land .The results showed :that forest clearing and continuous cultivation for upland led to significant depletion of total soil organic C and N , and led to transform of organic P into inorganic P in surface soil .The decline of organic C was more than that of N in the soil .Organic C and total N content in natural forest land were 3.19 and 1.15 times more than those in agricultural land respectively .The proportions of particulate organic C to total C in natural forest land , agricultural land and afforested land were 65 %, 11 % and 47 %, respectively .The change of land use has great influence on the contents of particulate organic C and organic P in the 1 mm aggregates .[ Ch , 5 tab .14 ref .]

ZHANG Lǜ-qin, ZHANG Ming-kui. Changes of organic C, N and P pools in red soil in transformation between agricultural land and forestry land[J]. Journal of Zhejiang A&F University, 2006, 23(1): 75-79.
Citation: ZHANG Lǜ-qin, ZHANG Ming-kui. Changes of organic C, N and P pools in red soil in transformation between agricultural land and forestry land[J]. Journal of Zhejiang A&F University, 2006, 23(1): 75-79.

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