干旱区生态环境知识资源中心(Arid): 元谋干热河谷侵蚀沟不同部位土壤含水量与植物多样性关系研究

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	元谋干热河谷侵蚀沟不同部位土壤含水量与植物多样性关系研究
其他题名	Study on Relationship Between Soil Water Contents in Different Sections of Gully and Plant Diversity in Yuanmou Dry-hot Valley
	苟嘉皓; 吴世祥; 何聪; 胡翠华; 杨丹; 刘守江
来源期刊	西南农业学报
ISSN	1001-4829
出版年	2021
卷号	34 期号:6 页码:1001-4829
中文摘要	【目的】针对元谋干热河谷地区土壤水分对植物群落的影响,开展不同部位土壤含水量与植物多样性的研究,为元谋干热河谷侵蚀沟植被多样性及生态恢复水土保持工作开展提供依据。【方法】在植物群落样方调查和烘干法测定土壤含水量的基础上,对元谋干热河谷沙地村、金雷村、小雷宰12条典型侵蚀沟不同部位(集水区、沟头和沟床)含水量与植物多样性关系进行了研究。【结果】①集水区、沟头、沟床不同部位土壤含水量分别为9.59%、10.11%和11.31%。②研究样区植物物种方面,丰富度指数Ma、香浓维纳指数H'、辛普森指数D、Pielou均匀度指数E分别为2.470、2.094、0.836和0.840。③研究样区侵蚀沟集水区、沟头、沟床土壤的平均含水量与丰富度指数Ma的相关系数分别为0.309、0.311、-0.146;香浓维纳指数H'相关系数分别为0.457、0.103和0.124;辛普森指数D相关系数分别为0.420、0.122、0.308;Pielou均匀度指数E相关系数分别为0.082、-0.164、0.228。【结论】①土壤含水量显示研究样区土壤较为干旱,水分可能是该区植物生长的限制因子;②植物多样性指数表明侵蚀沟内植物物种较少,植被需要恢复,侵蚀沟亟待治理;③通过对样区不同部位土壤含水量与植物多样性指数相关性研究得出,总体上以正相关为主,表明土壤含水量越高,植被生长越好。进一步说明水分是该区植物分布和生长的限制因子。显著性总体上偏低,是因为整体干旱的环境内,土壤含水量空间分异不够显著所致,小地形和降雨对植被的影响更为显著。这对于元谋干热河谷侵蚀沟植被恢复工作开展过程中,需将土壤含水量与地形因子综合分析提供了重要的理论和实践依据。
英文摘要	【Objective】The present paper aimed to the effect of soil moisture on plant communities in Yuanmou dry-hot valley area,the soil water content and plant diversity in different sections was studied to provide a basis for plant diversity and ecological restoration of soil and water conservation in Yuanmou dry-hot valley.【Method】Based on the survey of plant community plots and the determination of soil water content by drying method,the relationships between water content and plant diversity of different sections (drainage area,gully head and gully bed) of 12 typical gullies in Shadi village,Jinlei village and Xiaoleizai of Yuanmou dry-hot valleywere studied.【Result】(i) The soil water contents in different sections of the drainage area,gully head and gully bedwere 9.59%,10.11%,and 11.31%,respectively.(ii) In the study of plant species in the sample area,the richness index Ma,Shannon-Wiener index H',Simpson index Dand Pielou evenness index E were 2.470,2.094,0.836,and 0.840.(iii) The correlation coefficients of the average water content of the drainage area,gully head and gully bed soil in the study area with the richness index Ma were 0.309,0.311,and-0.146;The Shannon-Wiener index H'correlation coefficients are 0.457,0.103 and 0.124;The Simpson index D correlation coefficients are 0.420,0.122,0.308;Pielou evenness index E correlation coefficients were 0.082,-0.164 and 0.228.【Conclusion】(i) The soil water content showed that the soil in the study area was relatively dry,and water might be the limiting factor for plant growth in the area.(ii) The plant diversity index indicated that there were fewer plant species in gullies,plant needed to be restored,and the gullies needed urgent treatment.(iii) According to the correlation between soil water content and plant diversity index in different sections of the sample area,the overall positive correlation was dominant,indicating that the higher the soil water content had,the better the plant growth was.This further showed that water was the limiting factor for plant distribution and growth in this area.The overall significance was low because the spatial differentiation of soil water content was not significant enough in the overall arid environment,and the impact of small terrain and rainfall on plant was more significant,which would provide an important theoretical and practical basis for the comprehensive analysis of soil water content and topographic factors during the process of plant restoration of gullies in Yuanmou dry-hot valley.
中文关键词	元谋干热河谷 ; 不同部位土壤含水量 ; 植物多样性 ; 相关性 ; 限制因子
英文关键词	Yuanmou dry-hot valley Soil water content in different sections Plant diversity Correlation Limiting factor
类型	Article
语种	中文
国家	中国
收录类别	CSCD
WOS类目	Agriculture
CSCD记录号	CSCD:7029108
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/365350
作者单位	苟嘉皓, 西华师范大学国土资源学院, 南充, 四川 637009, 中国.; 吴世祥, 西华师范大学国土资源学院, 南充, 四川 637009, 中国.; 何聪, 西华师范大学国土资源学院, 南充, 四川 637009, 中国.; 胡翠华, 西华师范大学国土资源学院, 南充, 四川 637009, 中国.; 杨丹, 西华师范大学国土资源学院;;四川省干旱河谷土壤侵蚀监测与控制工程实验室, ;;四川省干旱河谷土壤侵蚀监测与控制工程实验室, 南充;;南充, 四川;;四川 637009;;637009, 中国.; 刘守江, 西华师范大学国土资源学院;;四川省干旱河谷土壤侵蚀监测与控制工程实验室;;西华师范大学嘉陵江流域研究所, ;;四川省干旱河谷土壤侵蚀监测与控制工程实验室;;, 南充;;南充;;南充, 四川;;四川;;四川 637009;;637009;;637009, 中国.
推荐引用方式 GB/T 7714	苟嘉皓,吴世祥,何聪,等. 元谋干热河谷侵蚀沟不同部位土壤含水量与植物多样性关系研究[J],2021,34(6):1001-4829.
APA	苟嘉皓,吴世祥,何聪,胡翠华,杨丹,&刘守江.(2021).元谋干热河谷侵蚀沟不同部位土壤含水量与植物多样性关系研究.西南农业学报,34(6),1001-4829.
MLA	苟嘉皓,et al."元谋干热河谷侵蚀沟不同部位土壤含水量与植物多样性关系研究".西南农业学报 34.6(2021):1001-4829.