[1]GUO Shujiang,YANG Zihui,WANG Qiangqiang,et al.Relationship Between Vegetation Characteristics and Sediment Discharge Transported by Surface Wind-Sand Flow in Dry Lake Bottom Sandstorm Area of Qingtu Lake[J].Research of Soil and Water Conservation,2021,28(01):19-24.
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Relationship Between Vegetation Characteristics and Sediment Discharge Transported by Surface Wind-Sand Flow in Dry Lake Bottom Sandstorm Area of Qingtu Lake
Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume:
28
Number of periods:
2021 01
Page number:
19-24
Column:
Public date:
2021-01-10
- Title:
- Relationship Between Vegetation Characteristics and Sediment Discharge Transported by Surface Wind-Sand Flow in Dry Lake Bottom Sandstorm Area of Qingtu Lake
- CLC:
- S157
- DOI:
- -
- Abstract:
- In this paper, Qingtu Lake dry lake bottom was taken as the research object, and nine typical site types were selected to carry out the observation and analysis of community composition, vegetation quantity characteristics and sediment discharge transported by surface wind-sand flow, and to study the relationship between vegetation quantity characteristics and sediment discharge. The results show that: four shrub layer plants, belonging to 4 families and 4 genera, were found in the main sandy area of Qingtu Lake; there are 11 herbaceous plants, belonging to 4 families and 11 genera, the average coverage of shrub layer was 11.2%, the average coverage of herbaceous layer was 6.5%, the vegetation was sparse, and the species construction was single; the diversity index and evenness index of different site types showed the fluctuation and difference, the diversity index of flowing Nitraria tangutorum shrub, fixed Nitraria tangutorum shrub and wasteland Kalidium foliatum community were higher; the vegetation distribution of fixed Nitraria tangutorum shrub, flowing Nitraria tangutorum shrub and lake shoal were more uniform; in the monitoring period, the sediment discharge transported by surface wind-sand flow of the nine sites types showed regularity in each month, and the accumulated sediment discharge of lake shoal was the largest, followed by the lake Kalidium foliatum community and the flowing Nitraria tangutorum shrub, and the sediment discharges of the above three types were significantly different from those of the other six types(p<0.05); among the quantitative characteristics of the vegetation at the bottom of the lake, there was a significant negative correlation between the shrub cover and the average sediment discharge transported by the surface wind-sand flow, and the increase of the shrub cover affected the sediment discharge transported by the wind-sand flow.
- References:
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Last Update:
2021-01-15