Effects of Different Grazing Systems on Plant Diversity and Soil Physical and Chemical Properties in Desert Steppe
《北方园艺》[ISSN:1001-0009/CN:23-1247/S]
- Issue:
- 2018年19
- Page:
- 109-115
- Research Field:
- Publishing date:
Info
- Title:
- Effects of Different Grazing Systems on Plant Diversity and Soil Physical and Chemical Properties in Desert Steppe
- Author(s):
- ZHANG Yuping1; 2; SONG Naiping1; WANG Xing1; SUI Jinming1
- (1.Breeding Base for State Key Laboratory of Land Degradation and Ecological Restoration in Northwest China,Ningxia University/State Key Laboratory of Land Degradation and Ecological Restoration in Northwest China,Yinchuan,Ningxia 750021；2.Xinhua College,Ningxia University,Yinchuan,Ningxia 750021)
- Keywords:
- different grazing system; desert grassland; plant diversity; soil physical and chemical properties
- PACS:
- -
- DOI:
- 10.11937/bfyy.20180243
- Abstract:
- In this study,an object of the desert grassland in central Ningxia was set,based on the different grazing systems.By field investigation and laboratory analysis,the effects of non-grazing,rotation-grazing and continuous-grazing on plant diversity and soil physicaland chemical characteristic were studied.In order to provide a basis for solving the social and scientific problems of ecological and production coordination in the desert steppe.The results showed that the Shannon-Wiener diversity index,Simpson dominance index and Margalef richness index of plant communities in continuous-grazing areas were 2.48,0.80 and 14,respectively,which were higher than those in the non-grazing and rotation-grazing areas.The Pielou evenness index of vegetation in the pastoral area was 1.42,which was significantly higher than that of the non-grazing and continuous-grazing areas (P＜0.05).In non-grazing and rotation-grazing area,the content of clay powder was significantly higher than that in grazing area (P＜0.05).The soil organic carbon and nitrogen contents in the rotational pastoral area were 4.30 g·kg-1 and 0.24 g·kg-1,respectively,which were significantly higher than that in the non-grazing area and the continuous-grazing area (P＜0.05).Rotation-grazing significantly improved the texture of the soil and increased the content of clay powder,thus promoting the improvement of soil physical and chemical characteristic.Grazing had a significant effect on plant diversity improvement.Therefore,after the restoration of vegetation diversity in desert grassland,the rotation system should be adopt to break the single optimal community structure and restore the soil texture.
Last Update: 2018-10-25