[1]WANG Qiao-li,JIA Yan-feng,WANG Ning,et al.Distribution of Root on Vegetation Recovery Slope in the Hilly and Gully Loess Plateau[J].Research of Soil and Water Conservation,2012,19(05):16-22.
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Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume:
19
Number of periods:
2012 05
Page number:
16-22
Column:
Public date:
2012-10-20
- Title:
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Distribution of Root on Vegetation Recovery Slope in the Hilly and Gully Loess Plateau
- Author(s):
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WANG Qiao-li1, JIA Yan-feng2, WANG Ning3, DU Hua-dong3, JIAO Ju-ying3,4
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1. College of Resources and Environment, Northwest A & F University, Yangling, Shaanxi 712100, China;
2. College of Water Conservancy, Shenyang Agriculture University, Shenyang 110866, China;
3. Institute of Soil and Water Conservation, CAS & MWR, Yangling, Shaanxi 712100, China;
4. Institute of Soil and Water Conservation, Northwest A & F University, Yangling, Shaanxi 712100, China
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- Keywords:
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hilly and gully Loess Plateau; root biomass; root distribution; soil nutrient; soil moisture
- CLC:
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S152.7
- DOI:
-
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- Abstract:
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The root distribution and the influence of soil nutrient and soil moisture on root distribution of vegetation recovery slope on the hilly and gully Loess Plateau were studied. The results showed that the distribution of root varied with slope aspect, erosion belt, soil depth and vegetation types. The total root biomass of south-face slope was higher than that of east-face slope, but there was no significant difference. Significant differences in the total root biomass and ≤1 mm root biomass existed between the gully slope and each erosion belt on the inter-gully slope. The root biomass decreased with the increase of soil depth. Different vegetation types and coverage had great influence on root biomass. Among the different diameter levels, the biomass of root with the diameter less than 1 mm group was the largest, followed by the 1~2 mm group, and the 2~3 mm group and the >3 mm group were smaller, meanwhile there existed significant differences between the root biomass of ≤1 mm group and that of other diameter levels. There was a medium positive correlation between root biomass and soil nutrient(except total phosphorus), and the distribution of root biomass and soil moisture in different soil depth was inconsistent. Therefore, root distribution not only depends on its own characteristics, but also is affected by the soil environmental condition.