[1]WANG Yueling,XU Hao,MAFan,et al.Soil Anti-scourability and Its Related Physical Properties on Typical Forestlands in Loess Hilly Region of Southern Ningxia[J].Research of Soil and Water Conservation,2021,28(01):37-43.
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Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume:
28
Number of periods:
2021 01
Page number:
37-43
Column:
Public date:
2021-01-10
- Title:
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Soil Anti-scourability and Its Related Physical Properties on Typical Forestlands in Loess Hilly Region of Southern Ningxia
- Author(s):
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WANG Yueling1, XU Hao1, MAFan1, WAN Haixia1, DONG Liguo1, HAN Xinsheng1, CAI Jinjun
2
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(1.Institute of Desertification Control, Ningxia Academy of Agriculture and Forestry Sciences, Ningxia Key Laboratory of Desertification Control and Soil and Water Conservation, Yinchuan 750002, China; 2.Institute of Resources and Environment, Ningxia Academy of Agriculture and Forestry Sciences, Yinchuan 750002, China)
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- Keywords:
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loess hilly region of Southern Ningxia; artificial forest; soil hydro-physical properties; soil anti-scouribility
- CLC:
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S157.1
- DOI:
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- Abstract:
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In this study, we analyzed the soil hydro-physical properties and soil anti-scourability in typical forest types in the loess hilly region of Southern Ningxia in order to provide scientific basis for the ecological function evaluation and tree species allocation of the project of returning farmland to forest in the region from the perspective of soil anti-scourability. Soil hydro-physical indices and scourability coefficient of 4 forest types(pure forest of Prunus sibirica, pure forest of Prunus davidiana, mixed forest of Prunus sibirica×sea-buckthorn, mixed forest of Prunus sibirica×Caragana korshinskii)were obtained by the method of field sampling and laboratory test. The results showed that there were significant differences in soil bulk density, total porosity, water retention capacity and anti-scourability coefficient of 4 different forest types. In 0—30 cm soil layer, the soil bulk density showed an increasing trend with the increase of soil depth, and soil bulk density decreased in the order: Prunus sibirica×Hippophae rhamnoides forest>Prunus sibirica forest>Prunus davidiana forest>Prunus sibirica×Caragana korshinskii forest. The total porosity and capillary porosity of soil decreased with the depth of soil layer. The maximum water holding capacity decreased in the order: Prunus sibirica×Hippophae rhamnoides forest>Prunus sibirica forest>Prunus davidiana forest>Prunus sibirica×Caragana korshinskii forest. Both the gross water holding capacity and field water holding capacity decreased in the order: Prunus sibirica×Caragana korshinskii forest>Prunus davidiana forest>Prunus sibirica×Hippophae rhamnoides forest. The soil anti-scourability coefficients of 4 forest types decreased in the order: Prunus sibirica×Caragana korshinskii forest>mountain apricot×Hippophae rhamnoides forest>Prunus sibirica forest>Prunus davidiana forest. Soil bulk density was negatively correlated with soil total porosity, capillary water holding capacity, field water holding capacity and soil anti-scourability coefficient, while soil total porosity was positively correlated with soil water holding capacity and impact resistance coefficient. The correlation between soil total porosity and soil water holding capacity and soil resistance coefficient was the best. Based on the above analysis, it is concluded that Prunus sibirica×Caragana korshinskii mixed forest is superior to the other three forest types, which can effectively improve the soil structure and the soil erosion resistance ability.