[1]QU Wen-jie,SONG Nai-ping,CHEN Lin,et al.Responses of Two Types of Desertification Grasslands in Desert Steppe to Shallow Ploughing[J].Research of Soil and Water Conservation,2014,21(01):85-89,94.
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Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume:
21
Number of periods:
2014 01
Page number:
85-89,94
Column:
Public date:
2014-02-28
- Title:
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Responses of Two Types of Desertification Grasslands in Desert Steppe to Shallow Ploughing
- Author(s):
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QU Wen-jie, SONG Nai-ping, CHEN Lin, LIU Bing-ru, YANG Xin-guo
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State Key Laboratory Breeding Base of Northwest Land Degradation and Restoration, Ningxia University, Yinchuan 750021, China
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- Keywords:
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desert steppe; shallow ploughing; vegetation update; sand-covered grassland; erosion grassland
- CLC:
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Q948.12+3
- DOI:
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- Abstract:
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Shallow ploughing is an improvement technology on the degraded vegetation, and its effect is often strongly related to the soil conditions. To further study the applicability and mechanism of shallow ploughing in degraded desert steppes, covering sand grassland (sheet sand cover type) and erosion grassland (erosion coarsening type) were selected in Yanchi of Ningxia Hui Autonomous Region, vegetation update and soil moisture changes were analyzed for the deeply ploughed (20 cm) and shallowly ploughed (5 cm) treatments. The results showed that shallow plowing effectively suppressed scoparia quarter, activated the soil seed bank and raised uniformity and diversity of two degradation types of grassland vegetation, but deep plowing under vegetation cover declined a lot. Species richness in sand covering grassland remained stable, with dominant annual Setaira viridis(L.)Beauv and Eragrostis pilosa, and the soil moisture concentrated to the lower layer in deep plowing treatment. While the number of species in erosion coarsening type sand decreased sharply, but indicator Lespedeza bicolor in the community of the dominant position further improved, with soil moisture in the vertical profile uniform increasing, and 0—100 cm soil water storage capacity significantly improving. Shallow plowing is an effective means to promote the restoration of degraded grassland succession; the shallow plowing is more universal. But in view of vegetation regeneration and moisture accumulation, the deep plowing measure is more suitable for sand covered grassland, and shallow plowing is more appropriate measures in erosion grassland.