Decreased ultraviolet radiation and decomposer biodiversity inhibit litter decomposition under continuous nitrogen inputs

doi:10.1111/1365-2435.14015

	Decreased ultraviolet radiation and decomposer biodiversity inhibit litter decomposition under continuous nitrogen inputs
	Wei, Bin 1; Zhang, Dianye ; Kou, Dan 2; Yang, Guibiao ; Liu, Futing 3; Peng, Yunfeng ; Yang, Yuanhe1
	2022
发表期刊	FUNCTIONAL ECOLOGY
ISSN	0269-8463
卷号	36 期号:4 页码:998-1009
摘要	1. Atmospheric nitrogen (N) deposition has altered biogeochemical cycles and ecosystem functioning. As a key process involved in carbon and nutrient cycles in terrestrial ecosystems, litter decomposition is sensitive to external N inputs. However, it remains unclear how the interactions of ultraviolet (UV) radiation, soil biodiversity (bacteria, fungi and invertebrates) and conventional drivers (e.g. litter chemistry and microbial activities) regulate the responses of litter decomposition to continuous N inputs. 2. Based on a multilevel N addition experimental platform, we conducted a 2-year litter decomposition experiment to examine the relative importance of N-induced changes in biotic and abiotic factors in mediating changes in the decomposition rates of four litter types (three representative species and their mixture) along an experimental N gradient in a Tibetan alpine steppe. 3. Our results showed that litter decomposition rates exhibited a consistent decrease in response to N enrichment among all species and their mixture. The slowed decomposition rates with increasing N addition were associated with N-induced reductions in UV radiation and soil bacterial diversity. An additional UV radiation manipulative experiment further confirmed that photodegradation had strong effects on plant litter decomposition at our study site. 4. These results demonstrated that N-induced declines in UV radiation and soil bacterial diversity inhibited litter decomposition, challenging the traditional view that changes in litter chemistry and microbial activities determine the responses of litter decomposition to external N inputs. Read the free Plain Language Summary for this article on the Journal blog.
关键词	carbon cycle litter microbial decomposition nitrogen deposition photodegradation soil bacterial diversity
学科领域	Ecology
DOI	10.1111/1365-2435.14015
收录类别	SCI
语种	英语
WOS关键词	NUTRIENT DYNAMICS ; ENZYME-ACTIVITY ; UV EXPOSURE ; LEAF-LITTER ; GRASSLAND ; DIVERSITY ; PHOTODEGRADATION ; DEPOSITION ; ADDITIONS ; POSITION
WOS研究方向	Science Citation Index Expanded (SCI-EXPANDED)
WOS记录号	WOS:000758057900001
出版者	WILEY
文献子类	Article
出版地	HOBOKEN
EISSN	1365-2435
资助机构	National Natural Science Foundation of China [31825006, 31988102, 91837312] ; Second Tibetan Plateau Scientific Expedition and Research (STEP) program [2019QZKK0106]
作者邮箱	yhyang@ibcas.ac.cn
引用统计	被引频次：7[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/2S10CLM1/28699
专题	植被与环境变化国家重点实验室
作者单位	1.Chinese Acad Sci, Inst Bot, State Key Lab Vegetat & Environm Change, Beijing, Peoples R China 2.Univ Chinese Acad Sci, Beijing, Peoples R China 3.Univ Eastern Finland, Biogeochem Res Grp, Dept Biol & Environm Sci, Kuopio, Finland 4.Chinese Acad Forestry, Res Inst Nat Protected Area, Beijing, Peoples R China
推荐引用方式 GB/T 7714	Wei, Bin,Zhang, Dianye,Kou, Dan,et al. Decreased ultraviolet radiation and decomposer biodiversity inhibit litter decomposition under continuous nitrogen inputs[J]. FUNCTIONAL ECOLOGY,2022,36(4):998-1009.
APA	Wei, Bin.,Zhang, Dianye.,Kou, Dan.,Yang, Guibiao.,Liu, Futing.,...&Yang, Yuanhe.(2022).Decreased ultraviolet radiation and decomposer biodiversity inhibit litter decomposition under continuous nitrogen inputs.FUNCTIONAL ECOLOGY,36(4),998-1009.
MLA	Wei, Bin,et al."Decreased ultraviolet radiation and decomposer biodiversity inhibit litter decomposition under continuous nitrogen inputs".FUNCTIONAL ECOLOGY 36.4(2022):998-1009.

条目包含的文件
文件名称/大小	文献类型	版本类型	开放类型	使用许可
Functional Ecology -（1523KB）	期刊论文	出版稿	开放获取	CC BY-NC-SA	浏览请求全文