[1]Sun Yanhui,Zhang Dinghai,Wu Xianzhong,et al.Study on the Relationship Between Soil Moisture and Topography-Vegetation Factors in Different Types of Ssand Dunes in the Southeastern Gurbantunggut Desert[J].Research of Soil and Water Conservation,2024,31(01):70-78.[doi:10.13869/j.cnki.rswc.2024.01.035]
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Study on the Relationship Between Soil Moisture and Topography-Vegetation Factors in Different Types of Ssand Dunes in the Southeastern Gurbantunggut Desert
Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume:
31
Number of periods:
2024 01
Page number:
70-78
Column:
Public date:
2024-02-20
- Title:
- Study on the Relationship Between Soil Moisture and Topography-Vegetation Factors in Different Types of Ssand Dunes in the Southeastern Gurbantunggut Desert
- CLC:
- S152.7
- DOI:
- 10.13869/j.cnki.rswc.2024.01.035
- Abstract:
- [Objective] The aim is to reveal the distribution pattern of soil moisture in the Gurbantunggut Desert and its relationship with topography-vegetation factors, which is a positive guide for formulating corresponding wind and sand control measures and establishing a scientific and reasonable plant sand fixation model. [Methods] Three different types of sand dunes(fixed, semi-fixed and mobile dunes)in the southeastern Gurbantunggut Desert were used to study the soil moisture at different depths(0—40 cm in the surface layer, 40—200 cm in the middle layer and 200—200 cm in the deep layer)of four micro-landscape types(windward slope, leeward slope, mound top and mound bottom)on the three different types of sand dunes by using ANOVA and redundancy analysis. The distribution characteristics of soil moisture at different depths(0—40 cm in the surface layer, 40—200 cm in the middle layer, and 200—300 cm in the deep layer)and its relationship with topography-vegetation factors were analyzed comprehensively. [Results](1)The fluctuation of soil moisture in 0—300 cm in all types of dunes gradually decreased with increasing depth, and the fluctuation of soil moisture in the surface layer was greater than that in the middle and deep layers.(2)There were significant differences in soil moisture at different depths in all types of dunes, and soil moisture was relatively more concentrated in three micro-landscape types: leeward slope, bottom of dune and windward slope.(3)Topography-vegetation factors had a negative correlation with soil moisture of most(semi-)fixed dunes in the study area, and the effect on soil moisture at different depths of(semi-)fixed dunes was more obvious than that of mobile dunes. [Conclusion] Soil moisture in all types of dunes is more strongly influenced by topographic factors than vegetation factors, and the main topographic-vegetation factors affecting soil moisture on different types of dunes are also different.
- References:
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Last Update:
2024-02-20