[1]ZHANG Wenjun,GAO Yong,DANG Xiaohong,et al.Spatial Distribution of Biological Crust Under Populus simonii Carr. in Mining Subsidence Area of Aeolian Sand Region[J].Research of Soil and Water Conservation,2020,27(06):85-89.
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Spatial Distribution of Biological Crust Under Populus simonii Carr. in Mining Subsidence Area of Aeolian Sand Region
Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume:
27
Number of periods:
2020 06
Page number:
85-89
Column:
目次
Public date:
2020-10-20
- Title:
- Spatial Distribution of Biological Crust Under Populus simonii Carr. in Mining Subsidence Area of Aeolian Sand Region
- Keywords:
- biological crust; Populus simonii Carr.; distribution radius; mining subsidence area of aeolian sand region
- CLC:
- S154.3
- DOI:
- -
- Abstract:
- In order to realize the distribution of biological crusts under Populus simonii Carr. and their influence factors, and provide a theoretical basis for the community succession and vegetation restoration of Populus simonii Carr. in subsidence area of aeolian sand mining region, we took the biological crusts under Populus simonii Carr. as the research samples, investigated the distribution of the biological crusts by using the transect method, measured the distribution radius and thickness of biological crusts, and analyzed the distribution characteristics of biological crusts under Populus simonii Carr. in four directions: southeast, southwest, northwest and northeast. The results indicate that:(1)there are significant differences in distributions of biological crusts under Populus simonii Carr. in different directions, the distribution radius of biological crust in the southeast is the largest, which is 0.90 times of the size of the crown radius; the distribution radius of biological crust in the northwest is the least, which is 0.72 times of the size of the crown radius; the distribution radius in the northeast and in the southwest are in between;(2)there are differences in thickness distributions of biological crusts under Populus simonii Carr., the maximum value of biological crust appears at 0 cm from the base of Populus simonii Carr., which is 1.64 cm; the thickness of biological crusts gradually decreases with distance;(3)in four directions, the biological crust in the southeast is the thickest, of which an average thickness is 1.44 cm; the biological crust in the northwest is the thinnest, of which an average thickness is 1.23 cm. The changes of biological crust thickness and soil moisture content from the base distance to 140 cm from the base of Populus simonii Carr. decrease with the increase of the distance from the base, and the change trend is basically the same.
- References:
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Last Update:
2020-10-20