干旱区生态环境知识资源中心(Arid): 重度放牧对荒漠草原土壤养分及微生物多样性的影响

Arid

	重度放牧对荒漠草原土壤养分及微生物多样性的影响
其他题名	Effects of Heavy Grazing on Soil Nutrients and Microbial Diversity in Desert Steppe
	杨阳; 贾丽欣; 乔荠瑢; 李梦然; 张峰; 陈大岭; 张昊; 赵萌莉
来源期刊	中国草地学报
ISSN	1673-5021
出版年	2019
卷号	41 期号:4 页码:72-79
中文摘要	本研究以荒漠草原为研究对象,基于高通量基因组测序技术,分析土壤中微生物群落的多样性,并测定土壤理化指标,旨在探讨重度放牧对土壤养分和微生物多样性的影响。研究结果显示,重度放牧显著降低土壤含水量、有机质和有效磷的含量(P<0.05),显著增加土壤中的氮素含量(P<0.05);重度放牧对土壤真菌多样性没有显著差异,但显著降低土壤细菌的Simpson指数(P<0.05);荒漠草原土壤细菌群落的优势门类是放线菌门、酸杆菌门、变形菌门和芽单胞菌门,土壤真菌群落的优势门类是子囊菌门和担子菌门。可见,放牧对土壤养分有显著影响,对细菌群落的Simpson指数有显著影响,但对土壤真菌群落多样性无明显影响。
英文摘要	The diversity of microbial communities in soil was analyzed based on high-throughput genome sequencing technology in the present study.Integrated with soil physical and chemical parameters, effects of overgrazing on soil nutrient and microbial diversity were explored.The results showed that overgrazing significantly reduced soil water content,organic matter and available phosphorus(P<0.05). Overgrazing significantly increased nitrogen content in the soil(P<0.05).There was no significant difference in soil fungal diversity under overgrazing condition.However,the Simpson index of bacteria was significantly reduced in the soil due to overgrazing(P<0.05).The dominant species of bacterial community in desert steppe were actinomycetes,acid bacillus,proteobacteria and bacillus.The dominant species of soil fungal community were ascomycetes and burdens.It can be concluded that overgrazing had significant effects on soil nutrients and Simpson index of bacteria but not on soil microbial community diversity.
中文关键词	荒漠草原 ; 放牧 ; 土壤养分 ; 土壤微生物多样性
英文关键词	Desert steppe Grazing Soil nutrients Soil microbial diversity
语种	中文
国家	中国
收录类别	CSCD
WOS类目	AGRICULTURE MULTIDISCIPLINARY
WOS研究方向	Agriculture
CSCD记录号	CSCD:6551781
来源机构	内蒙古农业大学
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/239730
作者单位	内蒙古农业大学草原与资源环境学院, 呼和浩特, 内蒙古 010019, 中国
推荐引用方式 GB/T 7714	杨阳,贾丽欣,乔荠瑢,等. 重度放牧对荒漠草原土壤养分及微生物多样性的影响[J]. 内蒙古农业大学,2019,41(4):72-79.
APA	杨阳.,贾丽欣.,乔荠瑢.,李梦然.,张峰.,...&赵萌莉.(2019).重度放牧对荒漠草原土壤养分及微生物多样性的影响.中国草地学报,41(4),72-79.
MLA	杨阳,et al."重度放牧对荒漠草原土壤养分及微生物多样性的影响".中国草地学报 41.4(2019):72-79.