干旱区生态环境知识资源中心(Arid): 两种灌丛化草原小叶锦鸡儿的叶片化学计量特征

Arid

	两种灌丛化草原小叶锦鸡儿的叶片化学计量特征
其他题名	Leaf Stoichiometric Traits of Caragana microphyllain the Shrub Encroached Grassland
	徐浩然; 俞富洋; 贾聪慧; 张国东; 李贺
来源期刊	草地学报
ISSN	1007-0435
出版年	2021
卷号	29 期号:10 页码:2191-2199
中文摘要	本研究分析了内蒙古19个灌丛化草原样地(典型草原区11个、荒漠草原区8个)的小叶锦鸡儿(Caragana microphylla)叶片碳(Carbon,C)∶氮(Nitrogen,N)∶磷(Phosphorus,P)化学计量特征。结果显示:典型草原中小叶锦鸡儿叶片C含量,C∶N,C∶P,N∶P显著低于荒漠草原,N,P含量显著高于荒漠草原;小叶锦鸡儿叶片N,P含量与土壤N,P含量呈正相关关系,叶片C含量与C∶N,C∶P呈正相关关系,叶片N与P含量呈正相关关系;小叶锦鸡儿叶片化学计量特征具有环境可塑性;叶片C含量在两种草原类型中,随年平均降水量(Mean annual precipitation,MAP)和年平均气温(Mean annual temperature,MAT)的变化趋势不一致;叶片N,P含量与MAP呈正相关关系,与MAT呈负相关关系;叶片C∶N,C∶P,N∶P与MAP呈负相关关系,与MAT呈正相关关系;小叶锦鸡儿的生长主要受P限制。本研究结果有助于了解小叶锦鸡儿的养分利用策略,并为灌丛化草原植被的保护和恢复工作提供参考。
英文摘要	The present study evaluated the leaf carbon∶nitrogen∶phosphorus(C∶N∶P)stoichiometric traits of Caragana microphylla among 19sites across shrub encroached grassland (11sites in typical grassland region,8sites in desert grassland region)in Inner Mongolia,China.We found that the leaf C content and ratios of C∶N,C∶P,N∶P of C.microphyllain typical grassland were significantly lower than that in desert grassland,while the leaf N and P contents were significantly higher than that in desert grassland;leaf N and P contents of C.microphylla were significantly positively correlated with soil N and P contents,leaf C content was significantly positively correlated with ratios of leaf C∶ N,C∶ P,leaf N content was significantly positively correlated with leaf P content;leaf stoichiometric traits of C.microphylla has environmental plasticity;leaf C content had different variation trends with MAP and MAT among two grassland types,while leaf N and P contents of C.microphylla were positively correlated with MAP but negatively correlated with MAT,ratios of C∶N,C∶P and N∶P were negatively correlated with MAP but positively with MAT;the development of C.microphylla was mainly limited by P.The results of the study contribute to the further understanding of the nutrient utilization strategy of C.microphyllaand provide a reference for the conservation and restoration cause of shrub encroached grassland vegetation.
中文关键词	小叶锦鸡儿 ; 化学计量特征 ; 灌丛化草原 ; 区域差异 ; 养分利用
英文关键词	Caragana microphylla Stoichiometric trait Shrub encroached grassland Regional difference Nutrient utilization
类型	Article
语种	中文
收录类别	CSCD
WOS类目	Agriculture
CSCD记录号	CSCD:7091571
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/377507
作者单位	徐浩然, 江苏师范大学地理测绘与城乡规划学院, 徐州, 江苏 221116, 中国.; 俞富洋, 江苏师范大学地理测绘与城乡规划学院, 徐州, 江苏 221116, 中国.; 贾聪慧, 江苏师范大学地理测绘与城乡规划学院, 徐州, 江苏 221116, 中国.; 张国东, 江苏师范大学地理测绘与城乡规划学院, 徐州, 江苏 221116, 中国.; 李贺, 江苏师范大学地理测绘与城乡规划学院, 徐州, 江苏 221116, 中国.
推荐引用方式 GB/T 7714	徐浩然,俞富洋,贾聪慧,等. 两种灌丛化草原小叶锦鸡儿的叶片化学计量特征[J],2021,29(10):2191-2199.
APA	徐浩然,俞富洋,贾聪慧,张国东,&李贺.(2021).两种灌丛化草原小叶锦鸡儿的叶片化学计量特征.草地学报,29(10),2191-2199.
MLA	徐浩然,et al."两种灌丛化草原小叶锦鸡儿的叶片化学计量特征".草地学报 29.10(2021):2191-2199.