干旱区生态环境知识资源中心(Arid): 半干旱黄土小流域草地群落功能性状空间异质性及环境驱动

Arid

	半干旱黄土小流域草地群落功能性状空间异质性及环境驱动
其他题名	Spatial heterogeneity and environmental drivers of grassland community functional traits in the semi-arid loess small watershed
	王鑫 1; 杨磊 2; 赵倩 1; 张钦弟 1
来源期刊	草业科学
ISSN	1001-0629
出版年	2019
卷号	36 期号:9 页码:2201-2211
中文摘要	植物功能性状能够反映群落对环境的适应策略并决定生态系统的功能,研究群落功能性状在小流域尺度的空间异质性及环境驱动,对于植被资源管理以及植被恢复重建意义重大。以甘肃定西典型半干旱黄土小流域草地为研究对象,通过方差分解和冗余分析对7个功能性状的群落加权均值及其与非生物环境因素的相关性进行了研究,辨析影响功能性状空间异质性的关键驱动因子。结果显示,1)非生物因子对群落功能性状空间异质性的影响力大小为土壤物理属性 >土壤化学属性 >地形因子,而且三者间的相关性较强,表明三者间存在交互作用,并共同影响植物功能性状。2)土壤有效水分、全碳、速效氮、全氮、有机碳、pH、土壤容重7个因子对群落功能性状异质性有显著影响,其中土壤有效水分是主导因子,表明土壤有效水分是半干旱区植物功能性状变异的关键性驱动因子。
英文摘要	Plant functional traits can reflect the adaptation strategy of the community to the environment and determine the function of the ecosystem. It is of great significance for vegetation resource management and vegetation restoration to study spatial heterogeneity and environmental drivers of community functional traits at a small watershed scale. Using the typical loess semi-arid grassland watershed in Dingxi, Gansu Province as the research area, we investigated the correlation between the weighted mean of seven functional traits and abiotic environmental factors to identify the key drivers of spatial heterogeneity of functional traits using the method of variance decomposition and redundancy analysis. The results showed that 1) three abiotic factors influenced the spatial heterogeneity of community functional traits. The physical property of soil had the most influence, followed by the chemical property of soil, followed by topographical factors. The correlation between the three groups was strong, indicating that there were interactions among the three groups that affected plant functional traits. 2) The available water in soil, total carbon, available nitrogen, total nitrogen, organic carbon, pH, and the bulk density of soil have significant effects on community functional trait heterogeneity. The available water in the soil is the dominant factor, which indicates that it is the key driving factor of plant functional trait variation in a semi-arid area.
中文关键词	功能性状 ; 空间异质性 ; 环境驱动 ; 冗余分析 ; 半干旱黄土小流域
英文关键词	functional trait spatial heterogeneity environmental drivers redundancy analysis semi-arid loess small watershed
语种	中文
收录类别	CSCD
WOS类目	PLANT SCIENCES
WOS研究方向	Plant Sciences
CSCD记录号	CSCD:6587056
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/316024
作者单位	1.山西师范大学生命科学学院, 临汾, 山西 041004, 中国; 2.中国科学院生态环境研究中心;;中国科学院大学, 城市与区域生态国家重点实验室;;, ;;, 北京;;北京 100085;;100049, 中国
推荐引用方式 GB/T 7714	王鑫,杨磊,赵倩,等. 半干旱黄土小流域草地群落功能性状空间异质性及环境驱动[J],2019,36(9):2201-2211.
APA	王鑫,杨磊,赵倩,&张钦弟.(2019).半干旱黄土小流域草地群落功能性状空间异质性及环境驱动.草业科学,36(9),2201-2211.
MLA	王鑫,et al."半干旱黄土小流域草地群落功能性状空间异质性及环境驱动".草业科学 36.9(2019):2201-2211.