IMHE OpenIR  > 山地灾害与地表过程重点实验室
Alternative TitleDifferences in vegetation community structure in hot-dry valleys in Yunnan Province related to valley stability
何周窈1,2; 王勇1; 苏正安2; 杨鸿琨3; 周涛2
Source Publication草业学报
Contribution Rank2
Other AbstractIn this research,field surveys of species composition and vegetation community structure of 22gullies in the hot-dry valley region of Yuanmou County in Yunnan Province were carried out using standard vegetation sampling methods to study the plant community structure in gullies with different activity levels.As the gully stability increased,the number of plant species also increased.Twenty-eight species of plants belonging to 28 genera of 12families,were found in active gullies.Twenty-nine species of plants belonging to 29genera of 16 families,were found in semi-stable gullies.Thirty-seven species of plants belonging to 35genera of 15families were discovered in stable gullies.Based on plant form,the gully vegetation communities could be divided into three layers(herb layer,shrub layer and tree layer)which varied with the activity level of the gullies.No tree layer was found in the active gullies.The dominant species in the herb layer was Heteropogon contortus,with Bothriochloa pertusa and Aristida adscensionis as sub-dominant species.The dominant species in the shrub layer was Dodonaea viscosa,with Leucaena leucocephalaas the sub-dominant species.The dominant species of the tree layer was Azadirachta Indica,with Eucalyptus robustaas the sub-dominant species.As the gully stability increased,so also did the coverage of its vegetation community.The plant communities in gullies with differing activity levels were all dominated by perennial herbs and shrubs,with a smaller number of tree species of trees,in which the dominant species were the same and played similar roles in the plant communities.However,with increasing stability of gullies,the number and diversity of trees gradually increased.For active gullies,semi-stable gullies and stable gullies,the plant community similarities were comparatively similar in the herb layer,extremely similar in the shrub layer,and extremely different in the tree layer.As the stability of a gully changed,the tendency for the plant community matured without species change in the shrub layer was evident.However,for the herb layer and tree layer,as the gully stability increased with time the species composition of the vegetation community evolved.These results indicate that the activity status of a gully plays an important role in determining the community structure of the tree layers,while the community structure of the shrub layer was less affected by the activity status of the gully.In summary,an obvious difference in vegetation structure was evident between gullies with different activity status,and this information could provide a scientific basis for gully ecological restoration decisions and for formulation of future studies.
Keyword冲沟 群落结构 重要值 多样性指数 相似性 植被恢复
Indexed ByCSCD
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Cited Times:1[CSCD]   [CSCD Record]
Document Type期刊论文
Corresponding Author王勇
First Author Affilication中国科学院水利部成都山地灾害与环境研究所
Recommended Citation
GB/T 7714
何周窈,王勇,苏正安,等. 干热河谷冲沟沟头活跃度对植物群落结构的影响[J]. 草业学报,2020,29(9):28-37.
APA 何周窈,王勇,苏正安,杨鸿琨,&周涛.(2020).干热河谷冲沟沟头活跃度对植物群落结构的影响.草业学报,29(9),28-37.
MLA 何周窈,et al."干热河谷冲沟沟头活跃度对植物群落结构的影响".草业学报 29.9(2020):28-37.
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