[1]WANG Jie,JIA Wenxiong,ZHAO Zhen,et al.Study on the Relations Between the Above Ground Biomass and the Soil Physicochemical Properties in the North Slope of Qilian Mountains[J].Research of Soil and Water Conservation,2017,24(01):36-42,48.
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Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume:
24
Number of periods:
2017 01
Page number:
36-42,48
Column:
Public date:
2017-02-28
- Title:
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Study on the Relations Between the Above Ground Biomass and the Soil Physicochemical Properties in the North Slope of Qilian Mountains
- Author(s):
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WANG Jie, JIA Wenxiong, ZHAO Zhen, CHEN Jinghua, DING Dan
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College of Geography and Environment Science, Northwest Normal University, Lanzhou 730070, China
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- Keywords:
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Qilian Mountain; meadow steppe; above ground biomass; soil physicochemical properties
- CLC:
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S812;S153.6
- DOI:
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- Abstract:
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In order to reveal the relations between the above ground biomass of meadow steppe and the soil physicochemical properties in the north slope of Qilian Mountain. We chose three typical samples in the eastern, central and western parts in the north slope of Qilian Mountains, collected the sampling data in two consecutive growing seasons, analyzed and examined the above ground biomass and soil physiochemical properties. The results show that total above ground biomass of the each sample is greater in 2014 than in 2013, and the mass increases from the east to the west. The soil moisture, soil temperature, soil organic matter, available potassium, pH value are significantly different in different growing seasons and the different layers among the sample sites. However, soil alkali-hydrolysable nitrogen and available phosphorus are relatively stable, and the differences are not signigicant. Correlation analysis shows that total above ground biomass is significantly positively correlated with soil temperature, pH value, and is significantly positively correlated with the available phosphorus, but is not significantly correlated with soil moisture. The results reveal that the major influence factors on total above ground biomass are soil temperature, available phosphorus and pH value. The soil nutrients mainly depend on the physicochemical properties of the soil, which determines the growth of vegetation and affect the biomass of plants.