干旱区生态环境知识资源中心(Arid): Shrub modulates the stoichiometry of moss and soil in desert ecosystems, China

Arid

DOI	10.1007/s40333-019-0057-y
	Shrub modulates the stoichiometry of moss and soil in desert ecosystems, China
	Li, Yonggang 1,2; Zhou, Xiaobing 1; Zhang, Yuanming1
通讯作者	Zhang, Yuanming
来源期刊	JOURNAL OF ARID LAND
ISSN	1674-6767
EISSN	2194-7783
出版年	2019
卷号	11 期号:4 页码:579-594
英文摘要	Desert mosses, which are important stabilizers in desert ecosystems, are distributed patchily under and between shrubs. Mosses differ from vascular plants in the ways they take up nutrients. Clarifying their distribution with ecological stoichiometry may be useful in explaining their mechanisms of living in different microhabitats. In this study, Syntrichia caninervis, the dominant moss species of moss crusts in the Gurbantunggut Desert, China, was selected to examine the study of stoichiometric characteristics in three microhabitats (under living shrubs, under dead shrubs and in exposed ground). The stoichiometry and enzyme activity of rhizosphere soil were analyzed. The plant function in the above-ground and below-ground parts of S. caninervis is significantly different, so the stoichiometry of the above-ground and below-ground parts might also be different. Results showed that carbon (C), nitrogen (N) and phosphorus (P) contents in the below-ground parts of S. caninervis were significantly lower than those in the above-ground parts. The highest N and P contents of the two parts were found under living shrubs and the lowest under dead shrubs. The C contents of the two parts did not differ significantly among the three microhabitats. In contrast, the ratios of C:N and C:P in the below-ground parts were higher than those in the above-ground parts in all microhabitats, with significant differences in the microhabitats of exposed ground and under living shrubs. There was an increasing trend in soil organic carbon (SOC), soil total nitrogen (STN), soil available phosphorous (SAP), and C:P and N:P ratios from exposed ground to under living shrubs and to under dead shrubs. No significant differences were found in soil total phosphorous (STP) and soil available nitrogen (SAN), or in ratios of C:N and SAN:SAP. Higher soil urease (SUE) and soil nitrate reductase (SNR) activities were found in soil under dead shrubs, while higher soil sucrase (STC) and soil beta-glucosidase (SBG) activities were respectively found in exposed ground and under living shrubs. Soil alkaline phosphatase (AKP) activity reached its lowest value under dead shrubs, and there was no significant difference between the microhabitats of exposed ground and under living shrubs. Results indicated that the photosynthesis-related C of S. caninervis remained stable under the three microhabitats while N and P were mediated by the microhabitats. The growth strategy of S. caninervis varied in different microhabitats because of the different energy cycles and nutrient balances. The changes of stoichiometry in soil were not mirrored in the moss. We conclude that microhabitat could change the growth strategy of moss and nutrients cycling of moss patches.
英文关键词	moss stoichiometry Syntrichia caninervis microhabitats soil stoichiometry soil enzyme Gurbantunggut Desert
类型	Article
语种	英语
国家	Peoples R China
开放获取类型	Bronze
收录类别	SCI-E
WOS记录号	WOS:000484954700008
WOS关键词	LEAF NITROGEN ; PHOSPHORUS STOICHIOMETRY ; ECOLOGICAL STOICHIOMETRY ; CNP STOICHIOMETRY ; MICROBIAL STOICHIOMETRY ; LITTER DECOMPOSITION ; ENZYME-ACTIVITIES ; SPATIAL-PATTERNS ; P STOICHIOMETRY ; GROWTH-RATE
WOS类目	Environmental Sciences
WOS研究方向	Environmental Sciences & Ecology
来源机构	中国科学院新疆生态与地理研究所
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/216794
作者单位	1.Chinese Acad Sci, Key Lab Biogeog & Bioresource Arid Land, Xinjiang Inst Ecol & Geog, Urumqi 830011, Peoples R China; 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
推荐引用方式 GB/T 7714	Li, Yonggang,Zhou, Xiaobing,Zhang, Yuanming. Shrub modulates the stoichiometry of moss and soil in desert ecosystems, China[J]. 中国科学院新疆生态与地理研究所,2019,11(4):579-594.
APA	Li, Yonggang,Zhou, Xiaobing,&Zhang, Yuanming.(2019).Shrub modulates the stoichiometry of moss and soil in desert ecosystems, China.JOURNAL OF ARID LAND,11(4),579-594.
MLA	Li, Yonggang,et al."Shrub modulates the stoichiometry of moss and soil in desert ecosystems, China".JOURNAL OF ARID LAND 11.4(2019):579-594.