干旱区生态环境知识资源中心(Arid): 伊犁河谷山地北坡土壤特性及植被群落多样性垂直分布格局

Arid

	伊犁河谷山地北坡土壤特性及植被群落多样性垂直分布格局
其他题名	The Vertical Distribution of Vegetation Patterns and Soil Properties at the Northern Slope of Ili River Valley
	杨瑞红; 王新军
来源期刊	水土保持研究
ISSN	1005-3409
出版年	2016
卷号	23 期号:6 页码:32-39,044
中文摘要	基于对伊犁河谷山地北坡垂直地带植被多样性和土壤生境的调查分析数据,采用Pearson相关系数法、主成分法和DCA排序法分析了物种多样性指数与环境因子之间的关系。结果表明:根据其植被带和土壤带沿不同海拔将其分为针叶林、山地草原、落叶阔叶林和荒漠草原;其总的物种丰富度和Simpson指数与海拔呈现先升高后降低,再升高的格局,不同海拔植被群落丰富度指数之间差异均显著(p<0.05),Shannon-Wiener指数随海拔的增加呈先增加后降低的趋势,Pielou均匀度指数随海拔的增加呈先降低后增加,然后降低的格局。犁河谷山地北坡土壤有机质和有效氮含量随海拔的增加而增加的趋势,基本表现为针叶林>山地草原>落叶阔叶林>荒漠草原,其中不同海拔植被群落土壤有机质含量之间差异均显著(p<0.05),土壤有效磷含量没有明显的垂直变化规律,土壤有效钾含量随海拔的增加呈先增加后降低的趋势,基本表现为山地草原>针叶林>落叶阔叶林>荒漠草原。犁河谷山地北坡土壤pH值随海拔的增加而降低的趋势,基本表现为荒漠草原>山地草原>落叶阔叶林>针叶林,土壤电导率、全盐和总盐含量均随海拔的增加呈先增加后降低的格局,基本表现为山地草原>落叶阔叶林>荒漠草原>针叶林。主成分的结果分析表明,第一主成分负荷值最高的分别为土壤全盐、总盐、电导率,可称为土壤盐分因子;第二主成分负荷值最高的分别为土壤有效氮、有机质和pH值,可称为保肥、供肥因子。DCA排序结果表明,沿着DCA第一轴,随着海拔逐渐降低,土壤有机质、有效氮和有效钾等土壤养分的含量逐渐下降,而pH值和电导率逐渐上升;沿着DCA第二轴,随着海拔逐渐降低,土壤总盐和全盐含量逐渐增加,而土壤有效磷含量却逐渐降低。由此可知,犁河谷山地北坡植物群落多样性的垂直分布格局是由海拔为主的多种环境因子综合作用的结果,而土壤养分和盐分随海拔的变化与植被带不尽一致,可能它们之间的同步变化存在一定的滞后期。
英文摘要	Based on a survey of sample plots in the study area,DCA,Pearson and principal component were used to analyze the relationships between diversity indices and soil properties,which were located on the north slopes of the Iri Valley,Xinjiang,China.The results are as follows.(1)The vegetation types were divided into coniferous forest,mountain meadow,broadleaved deciduous forest and desert steppe according to the vegetation habitats and soils along the elevation.The species richness and Simpson index first increased and then decreased,then increased with the increasing elevation,which had the significant difference in different elevations(p<0.05),and Shannon-Wiener index increased and then decreased with the increasing elevation and Pielou evenness index decreased and then increased then decreased.(2)Soil organic matter and available nitrogen content increased with the increase of elevation with the sequence of coniferous forest>mountain meadow>broadleaved deciduous forest>desert steppe,which had a significant difference in different elevations(p<0.05),while the content of available phosphorus had no significant difference in different elevations(p>0.05),and the content of available potassium first increased and then decreased with the increase of elevation.(3)The soil pH gradually decreased with the increase of elevation with the sequence of desert steppe>mountain meadow>broadleaved deciduous forest>coniferous forest,and the soil conductivity,contents of salt and total salt first increased and then decreased with the sequence of mountain meadow>broadleaved deciduous forest>desert steppe>coniferous forest.(4)The principal component analysis showed that the first principal components were total salt,electric conductivity,soil total salt, which might be referred to as the soil salinity factor,and the second principal components were soil effective nitrogen,organic matter and pH value,respectively,which might be referred to as soil fertilizer factors. (4)DCA sorting results indicated that with the gradual decrease of elevation,the soil organic matter,available nitrogen and available potassium decreased gradually,while pH and conductivity increased in the first axis of DCA,and the soil total salt increased gradually,and the soil available phosphorus gradually reduced in the second axis of DCA.(5)To sum up,these patterns were formed by the synthetic action of a variety of environmental factors among which elevation played an important role,and the vertical distribution of vegetation patterns and soil properties were not same indicating that there was the potential lag.
中文关键词	伊犁河谷 ; 土壤特性 ; 群落多样性 ; 垂直格局
英文关键词	Ili River Valley soil properties vegetation patterns altitude pattern
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:5823898
来源机构	新疆农业大学
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/235041
作者单位	新疆农业大学, 乌鲁木齐, 新疆 830052, 中国
推荐引用方式 GB/T 7714	杨瑞红,王新军. 伊犁河谷山地北坡土壤特性及植被群落多样性垂直分布格局[J]. 新疆农业大学,2016,23(6):32-39,044.
APA	杨瑞红,&王新军.(2016).伊犁河谷山地北坡土壤特性及植被群落多样性垂直分布格局.水土保持研究,23(6),32-39,044.
MLA	杨瑞红,et al."伊犁河谷山地北坡土壤特性及植被群落多样性垂直分布格局".水土保持研究 23.6(2016):32-39,044.