Ecological stoichiometry-based study of the influence of soil saline-alkali stress on nutrient homeostasis in L. chinensis

doi:10.1016/j.ecoenv.2018.09.020

CORC > 武汉植物园 > 中国科学院武汉植物园

	Ecological stoichiometry-based study of the influence of soil saline-alkali stress on nutrient homeostasis in L. chinensis
	Liu, Yi 1; Wang, Yuejiao 2; Li, Shujie 2; Liu, Hongshan 2; Li, Qingyu 2; Li, Yuefen 2
刊名	ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY
	2018-12-15
卷号	165 页码:243-249
关键词	Homeostasis model Ecological stoichiometry L. chinensis Saline-alkali stress N and P addition
ISSN号	0147-6513
DOI	10.1016/j.ecoenv.2018.09.020
英文摘要	Soil salinization is a major cause of land degradation and hinders the effective utilization of agricultural land resources. Leymus chinensis (L. chinensis), as a dominant species with wide ecological amplitude, plays an important role in improving saline-alkali grasslands and indicating the degree of salinization. In this study, a sand culture experiment (nitrogen and phosphorus addition accompanied by saline-alkali stress) was designed to investigate the impact of different saline-alkali environments on the ecological stoichiometric homeostasis of L. chinensis with the aim of elucidating the saline-alkali resistance mechanisms. The results showed that the homeostasis indexes of N, P and N:P in the aboveground part of L. chinensis were generally higher than those in the belowground part under different saline-alkali conditions. Furthermore, the homeostasis index of N (HN) was greater than that of P (He) in the aboveground part, whereas HN was less than Hp in the belowground part. This indicates that the growth aboveground of L. chinensis was mainly dependent on N, whereas the growth belowground was mainly affected by P. The homeostasis index of the aboveground organs was 4.45-12.93 under pH 7-9.8. In contrast, H-N and HN:P(+ N) in the belowground organs did not conform to a homeostasis model when pH > 9.1. Consequently, when L. chinensis is subjected to high saline-alkali stress, the homeostasis reaction of the roots is more sensitive than that of the aboveground organs.
资助项目	China Scholarship Council[201506175099] ; Natural Science Foundation of Jilin Province, China[201215017] ; National Natural Science Foundation of China[31670528]
WOS研究方向	Environmental Sciences & Ecology ; Toxicology
语种	英语
出版者	ACADEMIC PRESS INC ELSEVIER SCIENCE
WOS记录号	WOS:000447484000029
内容类型	期刊论文
源URL	[http://202.127.146.157/handle/2RYDP1HH/5994]
专题	中国科学院武汉植物园
通讯作者	Li, Yuefen
作者单位	1.Chinese Acad Sci, Wuhan Bot Garden, Key Lab Aquat Bot & Watershed Ecol, Wuhan 430074, Hubei, Peoples R China 2.Jilin Univ, Coll Earth Sci, Changchun 130061, Jilin, Peoples R China
推荐引用方式 GB/T 7714	Liu, Yi,Wang, Yuejiao,Li, Shujie,et al. Ecological stoichiometry-based study of the influence of soil saline-alkali stress on nutrient homeostasis in L. chinensis[J]. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY,2018,165:243-249.
APA	Liu, Yi,Wang, Yuejiao,Li, Shujie,Liu, Hongshan,Li, Qingyu,&Li, Yuefen.(2018).Ecological stoichiometry-based study of the influence of soil saline-alkali stress on nutrient homeostasis in L. chinensis.ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY,165,243-249.
MLA	Liu, Yi,et al."Ecological stoichiometry-based study of the influence of soil saline-alkali stress on nutrient homeostasis in L. chinensis".ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 165(2018):243-249.