干旱区生态环境知识资源中心(Arid): Abiotic factors affect leaf litter mass loss more strongly than initial litter traits under sand burial conditions

Arid

DOI	10.1016/j.catena.2020.104900
	Abiotic factors affect leaf litter mass loss more strongly than initial litter traits under sand burial conditions
	Qu, Hao; Zhao, Xueyong; Wang, Shaokun; Lian, Jie; Tang, Xia; Wang, Xinyuan; Zhang, Rui; Medina-Roldan, Eduardo
通讯作者	Qu, H
来源期刊	CATENA
ISSN	0341-8162
EISSN	1872-6887
出版年	2021
卷号	196
英文摘要	Litter decomposition is an important ecosystem process and a key determinant of nutrient turnover and carbon cycling in arid and semiarid regions. Sand burial is common in arid and semiarid regions and may strongly influence litter decomposition. However, the main factors influencing litter decomposition under sand burial conditions are uncertain. We performed a litter bag experiment over 3 years to understand the effects of sand burial on litter mass loss and measured abiotic factors (light intensity, soil temperature and humidity) and initial litter traits to determine which factors most influenced litter mass losses. The leaf litters of three dominant shrubs (Artemisia halodendron, Caragana microphylla, and Salix gordejevii) in the Horqin Sandy Land of northern China were selected, and four burial depths (surface, 5 cm, 10 cm, and 20 cm) were used. The results showed that the litter from the three shrubs under the surface treatment (no burial) and at the 5 cm burial depth decomposed more rapidly than the litter that was buried at depths of 10 cm and 20 cm. This is explained because the abiotic factors on the surface and at 5 cm burial depth were conducive for the mass loss of litter. The differences in litter mass losses among the three shrubs were not significant under other burial treatments, except that A. halodendron's litter decomposed significantly faster than litter from the other two shrubs at depths of 10 cm. Species differences in litter traits were weaker than the effects of burial depths and retrieval times on litter mass loss. The stepwise regression analysis showed that light intensity and soil temperature were the most important factors influencing the mean litter mass loss of 3 years. Therefore, we concluded that relative to the initial litter traits, abiotic factors are more able to indicate the leaf litter mass loss under sand burial conditions, and abiotic factors limiting litter mass loss switch with burial depths.
英文关键词	Litter mass loss Sand burial Shrubs Horqin Sandy Land Light intensity
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000583955200056
WOS关键词	UV-B RADIATION ; DECOMPOSITION RATES ; NITROGEN DYNAMICS ; PLANT COMMUNITY ; ORGANIC-CARBON ; LAND ; FORESTS ; PRECIPITATION ; GRASSLAND ; EXPOSURE
WOS类目	Geosciences, Multidisciplinary ; Soil Science ; Water Resources
WOS研究方向	Geology ; Agriculture ; Water Resources
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/327958
作者单位	[Qu, Hao; Zhao, Xueyong; Wang, Shaokun; Zhang, Rui] Chinese Acad Sci, Northwest Inst Ecoenvironm & Resources, Urat Desert Grassland Res Stn, Lanzhou 730000, Peoples R China; [Qu, Hao; Zhao, Xueyong; Lian, Jie; Tang, Xia; Zhang, Rui] Chinese Acad Sci, Northwest Inst Ecoenvironm & Resources, Naiman Desertificat Res Stn, Lanzhou 730000, Peoples R China; [Wang, Xinyuan] Ecol Environm Supervis & Adm Bur Gansu Prov, Lanzhou 730020, Peoples R China; [Medina-Roldan, Eduardo] Xian Jiaotong Liverpool Univ, Hlth & Environm Sci Dept, Suzhou 215123, Peoples R China
推荐引用方式 GB/T 7714	Qu, Hao,Zhao, Xueyong,Wang, Shaokun,et al. Abiotic factors affect leaf litter mass loss more strongly than initial litter traits under sand burial conditions[J],2021,196.
APA	Qu, Hao.,Zhao, Xueyong.,Wang, Shaokun.,Lian, Jie.,Tang, Xia.,...&Medina-Roldan, Eduardo.(2021).Abiotic factors affect leaf litter mass loss more strongly than initial litter traits under sand burial conditions.CATENA,196.
MLA	Qu, Hao,et al."Abiotic factors affect leaf litter mass loss more strongly than initial litter traits under sand burial conditions".CATENA 196(2021).