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[1]MA Zeyu,WANG Dan,DAI Wei,et al.Soil Characteristics and Fertility Evaluation of Abies sibirica Forest at Different Altitude Gradients in Altai Mountain[J].Research of Soil and Water Conservation,2016,23(05):134-140.

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Soil Characteristics and Fertility Evaluation of Abies sibirica Forest at Different Altitude Gradients in Altai Mountain

Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume: 23 Number of periods: 2016 05 Page number: 134-140 Column: Public date: 2016-10-28

Title:: Soil Characteristics and Fertility Evaluation of Abies sibirica Forest at Different Altitude Gradients in Altai Mountain

Author(s):: MA Zeyu¹, WANG Dan², DAI Wei¹, ZHANG Yutao³, DAI Aona¹; 1. College of Forestry, Beijing Forestry University, Beijing 100083, China;
2. Songshan National Nature Reserve Administration, Beijing 102115, China;
3. Institute of Forest Ecology, Xinjiang Academy of Forestry, Urumqi 830063, China

Keywords:: Abies sibirica forest; altitude; soil fertility; principal component analysis

CLC:: S714

DOI:: -

Abstract:: The variation characteristics of soil physical and chemical properties at different altitudes of natural Abies sibirica forests were investigated in Altai Mountain of Xinjiang Uyghur Autonomous Region. Correlation analysis and principal component analysis were used to evaluate soil fertility at these four altitudes. The results showed that: (1) the percentage content of sand in soils was greater than clay but less than silt at the four altitudes; (2) with increase of altitude, soil chemical and organic carbon mineralization characteristics changed in different manners, the pH value of low altitude was greater than that at the high altitude, soil organic matter, total nitrogen, active and slow-available carbon showed a trend of decline first and increase later, but soil organic carbon mineralization ratio decreased gradually, and significantly reduced above the 1 700 m; (3) close correlations were found between active and slow-available carbon and soil organic matter, total nitrogen, available potassium content, but not for pH value and carbon mineralization ratio; (4) contents of soil organic matter, total nitrogen, available phosphorus and readily available potassium played important roles in soil fertility evaluation. The soil fertility levels at different altitudes of Altai fir forest decrease in the order: 1 500～1 700 m > 1 300～1 500 m > 1 900～2 100 m > 1 700～1 900 m.

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