干旱区生态环境知识资源中心(Arid): Moss patch size and microhabitats influence stoichiometry of moss crusts in a temperate desert, Central Asia

Arid

DOI	10.1007/s11104-019-04191-x
	Moss patch size and microhabitats influence stoichiometry of moss crusts in a temperate desert, Central Asia
	Li, Yong-Gang 1,2; Zhou, Xiao-Bing 1; Zhang, Yuan-Ming1
通讯作者	Zhang, Yuan-Ming
来源期刊	PLANT AND SOIL
ISSN	0032-079X
EISSN	1573-5036
出版年	2019
卷号	443 期号:1-2 页码:55-72
英文摘要	Background and aims Desert mosses, which are important stabilizers in desert ecosystems, are distributed patchily as biological soil crusts in arid lands. Patch size and microhabitats of moss are affected by human activities in deserts, such as grazing, oil exploration, and reclamation. Moss patches as a microecosystem, is a functional unit. It is not clear how patch size of moss influences the stoichiometry of moss and soil. We examined the effects of moss patches of different sizes on moss and soil stoichiometry, and moss growth strategies in different microhabitats. Methods The dominant moss (Syntrichia caninervis Mitt.) of biological soil crusts in the Gurbantunggut Desert was selected to study carbon (C), nitrogen (N), and phosphorus (P) contents in moss patches. Soil inside and under the moss patches was analyzed from open areas and under the canopy of living shrubs. The C, N, and P stoichiometry of the moss and soil, and soil enzyme activities were measured. Results The effects of patch size on C, N, and P characteristics were microhabitat dependent. Moss N content in above-ground parts, moss C, N, and P contents in below-ground parts, and sucrase activity in soil under moss patches significantly increased with increase in patch size in open areas. Under the canopy of living shrubs, patch size had no significant influence on moss C, N, and P contents, soil nutrient contents, and soil enzyme activities. Patch size effects were stronger for moss and soil C, N, and P characteristics in open areas than those under the canopy of living shrubs. Moss N and P contents in above-ground parts were significantly higher than those in below-ground parts, whereas moss C:N and C:P ratios in above-ground parts were significantly lower than those in below-ground parts. Moss C, N, and P stoichiometry was weakly correlated with soil nutrient contents and enzyme activities. Structural equation modeling showed that the models for C, N, and P cycling differed between open areas and under the canopy of living shrubs. The effects of patch size on the multifunctionality of the moss microecosystem were regulated by microhabitats. Conclusions Increase in patch size benefits moss growth more in open areas than under the canopy of living shrubs. Shrubs provide a protected environment for moss plants and drive moss growth. Above-ground parts of mosses host more functions essential for growth and photosynthesis than below-ground parts of moss patches in a temperate desert. Patch size accounted for positive effects of moss stoichiometry in open areas. Patch size may influence the ecological function of moss patches. Shrubs dominantly drive moss growth compared with patch size effects.
英文关键词	Ecological stoichiometry Moss crust Patch size Nutrient island Microhabitats Soil stoichiometry Soil enzyme
类型	Article
语种	英语
国家	Peoples R China
收录类别	SCI-E
WOS记录号	WOS:000493661800004
WOS关键词	BIOLOGICAL SOIL CRUSTS ; EXTRACELLULAR ENZYME-ACTIVITIES ; N-P RATIOS ; METAPOPULATION DYNAMICS ; PHOSPHORUS LIMITATION ; LITTER DECOMPOSITION ; POSITIVE FEEDBACKS ; CNP STOICHIOMETRY ; MINERAL-NUTRITION ; PATTERN-FORMATION
WOS类目	Agronomy ; Plant Sciences ; Soil Science
WOS研究方向	Agriculture ; Plant Sciences
EI主题词	2019-10-01
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/2XILL650/310204
作者单位	1.Xinjiang Inst Ecol & Geog, CAS Key Lab Biogeog & Bioresource Arid Land, 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, Yong-Gang,Zhou, Xiao-Bing,Zhang, Yuan-Ming. Moss patch size and microhabitats influence stoichiometry of moss crusts in a temperate desert, Central Asia[J]. 中国科学院新疆生态与地理研究所,2019,443(1-2):55-72.
APA	Li, Yong-Gang,Zhou, Xiao-Bing,&Zhang, Yuan-Ming.(2019).Moss patch size and microhabitats influence stoichiometry of moss crusts in a temperate desert, Central Asia.PLANT AND SOIL,443(1-2),55-72.
MLA	Li, Yong-Gang,et al."Moss patch size and microhabitats influence stoichiometry of moss crusts in a temperate desert, Central Asia".PLANT AND SOIL 443.1-2(2019):55-72.