[1]LUO Yaxi,LIU Rentao.Evaluation on Soil Quality of Different Sand-Binding Shrub Plantations Within Straw Checkerboard in the Desertified Area of Ningxia[J].Research of Soil and Water Conservation,2019,26(05):60-67.
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Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume:
26
Number of periods:
2019 05
Page number:
60-67
Column:
Public date:
2019-09-06
- Title:
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Evaluation on Soil Quality of Different Sand-Binding Shrub Plantations Within Straw Checkerboard in the Desertified Area of Ningxia
- Author(s):
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LUO Yaxi1,2, LIU Rentao2
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1. College of Agriculture, Ningxia University, Yinchuan 750021, China;
2. Key Laboratory for Restoration and Reconstruction of Degraded Ecosystem in Northwestern China, ministry of Education, Ningxia University, Yinchuan 750021, China
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- Keywords:
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desertification; sand-binding revegetation; soil physical and chemical properties; soil quality evaluation; straw checkerboard
- CLC:
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S812.2
- DOI:
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- Abstract:
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In the desertified area of Yanchi, Ningxia, we selected four types of sand-binding shrub plantations within straw checkerboard of A.ordosica, H.scoparium, C.mongolicum and C.korshinskii as study sites, with the adjacent mobile sand land as control sites. An investigation on the changes of soil physical and chemical properties, and the soil comprehensive quality index was carried out in the revegetated sites under four types of sand-binding modes. The present study was to probe into the effect of sand-binding plantations within straw checkboard in terms of shrub species on soil quality during the revegetation process. The results showed that:(1) it was found that the soil coarse sand content increased significantly in the sites after revegetation by A.ordosica, whereas there were no significant differences between the soils in H.scoparium, C.korshinskii, C.mongolicum plantations and mobile sand land; the soil fine sand content increased significantly in the sites after revegetation by C.mongolicum, whereas there were no significant differences between the soils in A.ordosica, C.korshinskii, H.scoparium plantations and mobile sand land; the soil very fine sand content decreased significantly in the sites after revegetation by C.mongolicum, whereas there were no significant differences between the soils in A.ordosica, C.korshinskii and H.scoparium plantations and mobile sand land; compared with the mobile sand land, the soil clay and silt contents increased significantly in the sites revegetated by A.ordosica, and decreased significantly in the sites revegetated by H.scoparium and C.mongolicum, whereas there were no significant differences between the soils in C.korshinskii plantations and mobiles and land; (2) the soil bulk density increased significantly in the sites after revegetation by C.mongolicum, and decreased significantly in the sites after revegetation by A.ordosica, whereas there were no significant differences between the soils in H.scoparium, C.korshinskii plantations, and the mobile sand land; soil pH increased significantly in the sites after revegetation by C.mongolicum, whereas there were no significant differences between the soils in A.ordosica, H.scoparium, C.korshinskii plantations and the mobile sand land; the soil water content, electrical conductivity, organic carbon, total nitrogen and ratio of carbon to nitrogen increased significantly in the sites after revegetation by A.ordosica, whereas there were no significant differences between the soils in H.scoparium, C.mongolicum, C.korshinskii plantations and the mobile sand land; (3) the soil quality comprehensive index followed the order:A.ordosica (3.15) > mobile sand land (-0.03) > C.korshinskii (-0.56) > H.scoparium (-1.05) > C.mongolicum (-1.54), suggesting that soil quality was improved in the sites after revegetation by A.ordosica. It was concluded that the construction of A.ordosica plantations within straw checkerboard could improve desertified soil quality in a short time, whereas there were limited effects of other three types of sand-binding shrub plantations within straw checkerboard in the desertified area of Yanchi, Ningxia.