Reproductive height determines the loss of clonal grasses with nitrogen enrichment in a temperate grassland

作     者：Xu Chen Haining Lu Zhengru Ren Yuqiu Zhang Ruoxuan Liu Yunhai Zhang Xingguo Han Xu Chen;Haining Lu;Zhengru Ren;Yuqiu Zhang;Ruoxuan Liu;Yunhai Zhang;Xingguo Han

作者机构：State Key Laboratory of Vegetation and Environmental ChangeInstitute of Botanythe Chinese Academy of SciencesBeijing 100093China University of Chinese Academy of SciencesYuquan RoadBeijing 100049China 

出 版 物：《Plant Diversity》 (植物多样性（英文版）)

年 卷 期：2024年第46卷第2期

页      面：256-264页

核心收录：

学科分类：0710[理学-生物学] 07[理学] 0713[理学-生态学] 

基　　金：supported by a grant from the National Natural Science Foundation of China(grant no.32071603 and 32122055) the Strategic Priority Research Program of the Chinese Academy of Sciences(XDA26020101) 

主　　题：ANPP Biodiversity Clonal grass Colonization Extinction Nitrogen addition frequency 

摘      要：Tall clonal grasses commonly display competitive advantages with nitrogen(N)***,it is currently unknown whether the height is derived from the vegetative or reproductive ***,it is unclear whether the height of the vegetative or reproductive system regulates the probability of extinction and colonization,and determines species *** this study,the impacts on clonal grasses were studied in a field experiment employing two frequencies(twice a year ***)crossing with nine N addition rates in a temperate grassland,*** found that the N addition decreased species frequency and increased extinction probability,but did not change the species colonization probability.A low frequency of N addition decreased species frequency and colonization probability,but increased extinction ***,we found that species reproductive height was the best index to predict the extinction probability of clonal grasses in N-enriched *** low frequency of N addition may overestimate the negative effect from N deposition on clonal grass diversity,suggesting that a higher frequency of N addition is more suitable in assessing the ecological effects of N ***,this study illustrates that reproductive height was associated with the clonal species extinction probability under N-enriched environment.