[1]LIU Min-xia,MA Jian-zu.Feature Variations of Plant Functional Traits and Environmental Factor in South-and North-Facing Slope[J].Research of Soil and Water Conservation,2013,20(01):102-106.
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Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume:
20
Number of periods:
2013 01
Page number:
102-106
Column:
Public date:
2013-02-28
- Title:
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Feature Variations of Plant Functional Traits and Environmental Factor in South-and North-Facing Slope
- Author(s):
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LIU Min-xia1,2, MA Jian-zu3
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1. Department of Geography and Environment Science, Northwest Normal University, Lanzhou 730070, China;
2. Key Laboratory of Arid and Grassland Ecology, Ministry of Education, Lanzhou University, Lanzhou 730000, China;
3. Gansu Academy of Agricultural Sciences, Lanzhou 730070, China
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- Keywords:
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plant functional traits; south-facing; north-facing; environmental filtering; alpine meadow
- CLC:
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Q948
- DOI:
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- Abstract:
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Plant traits link environmental factors, individuals and ecosystem structure and functions as plants respond and adapt to the environment. The characteristics of plant functional traits and variation law by environmental changes are important to understand plant community composition and adaptation mechanism in different environmental gradients. Plant functional traits and soil element contents were studied along north-facing slope to south-facing slope in the alpine meadow. The results showed that the variation of the soil water content, the total phosphorus and soil organic carbon in different habitats from south-facing slope to north-facing slope were in the sequence of south-facing slope < north-facing slope, whereas soil total nitrogen content did not change significantly in the south-facing and north-facing slope, soil N:P ratio and pH changes followed the order of south-facing slope > north-facing slope. The plant functional traits of leaf phosphorus content (LPC) and specific leaf area (SLA) of the habitat from south-facing slope to north-facing slope were in the order of north-facing slope > south-facing slope, except that leaf nitrogen content, but leaf N:P ratio of north-facing slope were significantly less than the south-facing slope. Plant functional traits with the aspect of regular changes reflected the environmental filtering effects in the process of vegetation community forming in an alpine meadow. Correlation analysis showed that soil water content and soil nutrients were the important factors affecting plant functional traits in south-facing slope to north-facing slope, and soil water content was the dominant factor.