[1]DANG Xingdong,CHENG Liping,LIU Wenzhao.Soil Water Resources and Their Spatial Differentiation in a Small Watershed on the Loess Tableland-Gully Region at the End of Rainy Season[J].Research of Soil and Water Conservation,2021,28(06):52-57.
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Soil Water Resources and Their Spatial Differentiation in a Small Watershed on the Loess Tableland-Gully Region at the End of Rainy Season
Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume:
28
Number of periods:
2021 06
Page number:
52-57
Column:
Public date:
2021-10-10
- Title:
- Soil Water Resources and Their Spatial Differentiation in a Small Watershed on the Loess Tableland-Gully Region at the End of Rainy Season
- CLC:
- S152.7
- DOI:
- -
- Abstract:
- In order to clarify the soil water status in various combinations of landform and land use in the Loess Plateau at the end of rainy season，this study selected Wangdonggou watershed where located in the loess tableland-gully region，and then measured 0—6 m soil water content(SWC)by oven drying method in early November，2019. The results showed that:(1)the SWC of 0—2.6 m soil depth was relatively high，averaged 21.6%，and there was no significant difference in orchards with different apple tree ages on the tableland; the average SWC of 2.6—6 m soil depth decreased with the increase of apple tree age，and dropped to 15.3% at orchard age of 26; the average SWC of 0—6 m depth were 17.8% and 19.9% in the apple orchard with the age of 26 and farmland on the tableland，respectively. The average SWCs of 0—6 m depth in the apple orchards with the age of 26 were 16.7%，15.1%，14.0% at the downslope，ridge-top and upslope，respectively，and showed a decreasing trend with depth below 0.8 m; In the forests of Robinia pseudoacacia，the SWC gradually decreased with the increase of depth above 1.5 m，and the SWC below 1.5 m depth was about 15% at the tableland，less than 13% at all of the downslope，ridge top and upslope;(2)the SWCs of 0—6 m depth at the tableland and downslope decreased in the order: farmland>apple orchard with the age of 26>Robinia pseudoacacia forest，and the ones at the ridge top and upslope decreased in the order: grassland>farmland>apple orchard with the age of 26>Robinia pseudoacacia forest. These results are of great significance for understanding the differentiation characteristics of soil water resources in small watersheds of the Loess Plateau and promoting agricultural production and vegetation construction.
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Last Update:
2021-10-10