Soil fertility underlies the positive relationship between island area and litter decomposition in a fragmented subtropical forest landscape

doi:10.1016/j.catena.2021.105414

	Soil fertility underlies the positive relationship between island area and litter decomposition in a fragmented subtropical forest landscape
	Yang, Xian 2; Wang, Yating 1; Xu, Qianna 2; Liu, Weixing 3; Liu, Lingli3 ; Wu, Yujia 1; Jiang, Lin 2; Lu, Jianbo 1
	2021
发表期刊	CATENA
ISSN	0341-8162
卷号	204
摘要	Habitat fragmentation has transformed many once contiguous habitats into smaller patches varying in size, especially in forest ecosystems. However, while the consequences of habitat fragmentation for biodiversity and ecosystem functioning (e.g., productivity) have been widely documented, we know much less about how habitat fragmentation affects litter decomposition, a key component of biogeochemical cycling. Here we investigated the effect of forest fragment size on leaf litter decomposition by conducting a litterbag experiment on a group of land-bridge islands in the Thousand Island Lake in subtropical China. We also explored the mechanisms underlying litter decomposition-island area relationship by assessing the bottom-up (via soil nutrients) and top-down (via soil fauna) effects on litter decomposition. We found that the leaf litter of six common plant species with different litter quality, including Castanopsis sclerophylla, Dalbergia hupeana, Liquidambar formosana, Pinus massoniana, Quercus fabri, and Schima superba, consistently decomposed faster on larger islands, where greater soil fertility facilitated decomposition. Soil faunal diversity also enhanced litter decomposition, but its effect was mainly associated with litter quality and unaffected by island size. Our study demonstrates the deleterious effect of habitat fragmentation on litter decomposition, as well as the importance of bottom-up regulation by soil fertility in modulating habitat fragmentation effect on biogeochemical processes.
关键词	Bottom-up effects Habitat fragmentation Island size Soil fauna Top-down effects
学科领域	Geosciences, Multidisciplinary ; Soil Science ; Water Resources
DOI	10.1016/j.catena.2021.105414
收录类别	SCI
语种	英语
WOS关键词	ORGANIC-MATTER DECOMPOSITION ; HOME-FIELD ADVANTAGE ; VEGETATION STRUCTURE ; NITROGEN ADDITIONS ; MICROBIAL BIOMASS ; CARBON ; FAUNA ; QUALITY ; BIODIVERSITY ; METAANALYSIS
WOS研究方向	Science Citation Index Expanded (SCI-EXPANDED)
WOS记录号	WOS:000657369600036
出版者	ELSEVIER
文献子类	Article
出版地	AMSTERDAM
EISSN	1872-6887
资助机构	National Natural Science Foundation of China [31361123001] ; National Science Foundation of the USA [DEB-1342754, DEB-1856318]
作者邮箱	lin.jiang@biology.gatech.edu ; jianbo.lu@hznu.edu.cn
作品OA属性	Bronze
引用统计	被引频次：2[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.ibcas.ac.cn/handle/2S10CLM1/26626
专题	植被与环境变化国家重点实验室
作者单位	1.Sun Yat Sen Univ, Sch Ecol, State Key Lab Biocontrol, Guangzhou 510275, Peoples R China 2.Hangzhou Normal Univ, Coll Life & Environm Sci, Hangzhou 311121, Peoples R China 3.Georgia Inst Technol, Sch Biol Sci, Atlanta, GA 30332 USA 4.Chinese Acad Sci, Inst Bot, Beijing, Peoples R China
推荐引用方式 GB/T 7714	Yang, Xian,Wang, Yating,Xu, Qianna,et al. Soil fertility underlies the positive relationship between island area and litter decomposition in a fragmented subtropical forest landscape[J]. CATENA,2021,204.
APA	Yang, Xian.,Wang, Yating.,Xu, Qianna.,Liu, Weixing.,Liu, Lingli.,...&Lu, Jianbo.(2021).Soil fertility underlies the positive relationship between island area and litter decomposition in a fragmented subtropical forest landscape.CATENA,204.
MLA	Yang, Xian,et al."Soil fertility underlies the positive relationship between island area and litter decomposition in a fragmented subtropical forest landscape".CATENA 204(2021).

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