内蒙古多伦县4种植被对沙地土壤的修复效应

doi:10.11934/j.issn.1673-4831.2017.01.003

Abstract

Abstract:

To explore effects of vegetation restoration on soil properties in sandy land, soil samples were collected, separately, from 4 plots of land under Prunus sibirica (SX), Caragana korshinskii (NT), Salix gordejevii (HL), and natural grasses (CD) in Duolun County in Inner Mongolia for analysis of soil physical and chemical properties, such as content of soil water, pH, EC, SOC, total N, total P. Results show:(1) SOC is always the highest in the surface layer, regardless of plots, reaching 21.3, 11.0, 7.3 and 2.0 g·kg^-1 in Plots SX, CD, NT and HL, respectively; (2) Total P, total N and SOC varied similarly in content; (3) The content of soil fine clay in Plot SX is the highest, reaching 26.5%, that in Plot CD, the second, being 10.8%, and that in Plot HL the least, being just 6.5%; (4) In the 0-10 cm soil layer, SOC is significantly or ultra-significantly related to TN, TP and soil water in content, and the content of fine clay is almost significantly related to all soil nutrient indices (P<0.05 or P<0.01). All the findings in this research demonstrate that, large-scale cultivation of Salix gordejevii in recent years is not ideal in improving physical and chemical properties of the sandy soil in the studied region, however, naturally developed grasslands have much better effect. Therefore, it is wise to pay more attention to protection of natural grasslands, when trying to control desertification by revegetation.

Key words: sandy restoration, soil physicochemical property, species selection, Duolun County

CLC Number:

LI Zhong-fei, GAO Ji-xi, LIU Hai-jiang. Effects of Vegetation Remedying Sandy Soil in Duolun County of Inner Mongolia[J]. Journal of Ecology and Rural Environment, 2017, 33(1): 15-22.

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Effects of Vegetation Remedying Sandy Soil in Duolun County of Inner Mongolia

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