干旱区生态环境知识资源中心(Arid): 高寒草甸退化对土壤电导率变化影响的研究

Arid

	高寒草甸退化对土壤电导率变化影响的研究
其他题名	The influence of alpine meadow degradation on soil conductivity change
	王英成; 芦光新; 赵丽蓉; 邓晔; 王军邦
来源期刊	干旱区研究
ISSN	1001-4675
出版年	2021
卷号	38 期号:1 页码:104-113
中文摘要	土壤电导率是表征土壤水溶性盐的一个重要指标,可反映土壤盐渍化程度。为了研究高寒草甸退化对土壤电导率的影响,以三江源区未退化高寒草甸和退化高寒草甸为研究对象,系统分析了退化高寒草甸的植被特征和土壤特征与土壤电导率的相互关系。结果表明:高寒草甸退化会对土壤电导率产生显著负影响,且土壤电导率与评价高寒草甸的退化指标植被盖度、地上生物量、土壤有机质、土壤全氮含量表现出一致的变化趋势。因而,认为高寒草甸的退化是会引起土壤电导率的变化,土壤电导率作为土壤盐渍化程度的衡量指标,亦可作为评价草甸退化的客观指标之一。
英文摘要	Grassland degradation is a complex and long-term process,and the most apparent sign of its occurrence is vegetation degradation(e.g.,vegetation community composition,productivity,and spatial structure).During this process,soil physical-chemical properties change,impoverishing the soil and making it arider.Soil electric conductivity is an index for measuring the water-soluble salinity,reflecting soil salinization.To explore how the soil conductivity changes during the degradation of alpine meadow,whether the soil conductivity presents a regular change with the degradation of alpine meadow,just like the physical-chemical characteristics of vegetation and soil.Therefore,to analyze the influence of alpine meadow degradation on soil conductivity,we studied the undergraded and degraded alpine meadows in the Three River Source Region.We adopted a statistical test method to systematically analyze the relationship between vegetation and soil characteristics and the degraded alpine meadow's soil conductivity.The degradation of alpine meadow significantly affected the vegetation coverage and biomass,causing the reduction of total soil nitrogen,organic matter,and moisture,turning it more infertile.We found that alpine meadow's degradation negatively impacted soil conductivity.The soil conductivity showed a consistent trend with alpine meadow' s degradation indexes,including vegetation coverage,aboveground biomass,soil organic matter,and total nitrogen content.Therefore,we believe that alpine meadow's degradation will change soil conductivity,and that these parameters can be used as an index of the degree of soil salinization and meadow degradation.Our study aims to reveal the characteristics of vegetation-soil conductivity during the alpine meadow's degradation process,enrich the evaluation indexes of degraded alpine meadow,and provide a scientific basis for the early warning and restoration management of degraded alpine meadow.
中文关键词	退化高寒草甸 ; 土壤电导率 ; 植被特征 ; 土壤特征
英文关键词	alpine degraded meadow soil electrical conductivity vegetation characters soil characters
类型	Article
语种	中文
收录类别	CSCD
WOS类目	Agriculture
CSCD记录号	CSCD:6924070
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/377659
作者单位	王英成, 青海大学, 西宁, 青海 810016, 中国.; 芦光新, 青海大学, 西宁, 青海 810016, 中国.; 赵丽蓉, 青海大学, 西宁, 青海 810016, 中国.; 邓晔, 中国科学院生态环境研究中心, 北京 100085, 中国.; 王军邦, 中国科学院地理科学与资源研究所, 生态系统大数据与模拟中心, 生态系统网络观测与模拟重点实验室, 北京 100101, 中国.
推荐引用方式 GB/T 7714	王英成,芦光新,赵丽蓉,等. 高寒草甸退化对土壤电导率变化影响的研究[J],2021,38(1):104-113.
APA	王英成,芦光新,赵丽蓉,邓晔,&王军邦.(2021).高寒草甸退化对土壤电导率变化影响的研究.干旱区研究,38(1),104-113.
MLA	王英成,et al."高寒草甸退化对土壤电导率变化影响的研究".干旱区研究 38.1(2021):104-113.