[1]YOU Zheng,YAO Xu,JING Hang,et al.Coordinated Variation Between Root Distributions and Soil Aggregate Characteristics at Different Successional Stages[J].Research of Soil and Water Conservation,2016,23(06):20-25,31.
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Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume:
23
Number of periods:
2016 06
Page number:
20-25,31
Column:
Public date:
2016-12-28
- Title:
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Coordinated Variation Between Root Distributions and Soil Aggregate Characteristics at Different Successional Stages
- Author(s):
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YOU Zheng1, YAO Xu2, JING Hang2, GU Licha3, WANG Guoliang2,3
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1. College of Natural Resources and Environment, Northwest A & F University, Yangling, Shaanxi 712100, China;
2. Institute of Soil and Water Conservation, Northwest A & F University, Yangling, Shaanxi 712100, China;
3. Institute of Soil and Water Conservation, Chinese Academy of Sciences & Ministry of Water Resources, Yangling, Shaanxi 712100, China
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- Keywords:
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vegetation succession; root characteristic; soil aggregate
- CLC:
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Q948
- DOI:
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- Abstract:
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In order to understand the change of root distribution and the relationship with soil aggregate structure in different plant communities of succession stage, the characteristics of roots and soil aggregates of Artemisia capillaries, Artemisia gmelinii, Bothriochloa ischaemun community, which are typical species at abandoned stage in loess hilly region were studied by using the method of substituting spatial difference for time change. The results show that in the herbaceous community fine roots are the main part of whole roots and most of roots distribute in the upper soil layer; the root length density (RLD), root surface area (RSA), root biomass and specific root length (SRL) decreased with the increase of the size diameters (< 0.5, 0.5~1.0, 1.0~1.5, 1.5~2, > 2.0 mm). The stability of soil aggregates, RLD and RSA increased with succession durations. The stability of soil aggregates is significantly correlated with fine RLD, fine RSA and fine root biomass in the upper soil layer, which indicates that fine roots play an important role in vegetation succession and soil structure.