干旱区生态环境知识资源中心(Arid): The contribution of photodegradation to litter decomposition in a temperate forest gap and understorey

Arid

DOI	10.1111/nph.17022
	The contribution of photodegradation to litter decomposition in a temperate forest gap and understorey
	Wang, Qing-Wei; Pieriste, Marta; Liu, Chenggang; Kenta, Tanaka; Robson, Thomas Matthew; Kurokawa, Hiroko
通讯作者	Wang, QW
来源期刊	NEW PHYTOLOGIST
ISSN	0028-646X
EISSN	1469-8137
英文摘要	Litter decomposition determines carbon (C) backflow to the atmosphere and ecosystem nutrient cycling. Although sunlight provides the indispensable energy for terrestrial biogeochemical processes, the role of photodegradation in decomposition has been relatively neglected in productive mesic ecosystems. To quantify the effects of this variation, we conducted a factorial experiment in the understorey of a temperate deciduous forest and an adjacent gap, using spectral-attenuation-filter treatments. Exposure to the full spectrum of sunlight increased decay rates by nearly 120% and the effect of blue light contributed 75% of this increase. Scaled-up to the whole forest ecosystem, this translates to 13% loss of leaf-litter C through photodegradation over the year of our study for a scenario of 20% gap. Irrespective of the spectral composition, herbaceous and shrub litter lost mass faster than tree litter, with photodegradation contributing the most to surface litter decomposition in forest canopy gaps. Across species, the initial litter lignin and polyphenolic contents predicted photodegradation by blue light and ultraviolet B (UV-B) radiation, respectively. We concluded that photodegradation, modulated by litter quality, is an important driver of decomposition, not just in arid areas, but also in mesic ecosystems such as temperate deciduous forests following gap opening.
英文关键词	biogeochemical cycle functional traits mesic ecosystems model simulation ultraviolet radiation
类型	Article ; Early Access
语种	英语
开放获取类型	Other Gold
收录类别	SCI-E
WOS记录号	WOS:000594249400001
WOS关键词	PLANT LITTER ; LIGNIN ; RADIATION ; BEECH
WOS类目	Plant Sciences
WOS研究方向	Plant Sciences
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/328557
作者单位	[Wang, Qing-Wei] Chinese Acad Sci, Inst Appl Ecol, CAS Key Lab Forest Ecol & Management, Shenyang 110016, Peoples R China; [Wang, Qing-Wei; Kurokawa, Hiroko] Forestry & Forest Prod Res Inst, 1 Matsunosato, Tsukuba, Ibaraki 3058687, Japan; [Pieriste, Marta; Robson, Thomas Matthew] Univ Helsinki, Organismal & Evolutionary Biol, Viikki Plant Sci Ctr ViPS, POB 65, Helsinki 00014, Finland; [Pieriste, Marta] Normandie Univ, ECODIV, INRAE, UNIROUEN, F-76000 Rouen, France; [Liu, Chenggang] Chinese Acad Sci, CAS Key Lab Trop Plant Resources & Sustainable Us, Xishuangbanna Trop Bot Garden, Menglun 666303, Peoples R China; [Liu, Chenggang] Chinese Acad Sci, Core Bot Gardens, Ctr Plant Ecol, Xishuangbanna 666303, Peoples R China; [Kenta, Tanaka] Univ Tsukuba, Mt Sci Ctr, Sugadaira Res Stn, Ueda, Nagano 1278294, Japan
推荐引用方式 GB/T 7714	Wang, Qing-Wei,Pieriste, Marta,Liu, Chenggang,et al. The contribution of photodegradation to litter decomposition in a temperate forest gap and understorey[J].
APA	Wang, Qing-Wei,Pieriste, Marta,Liu, Chenggang,Kenta, Tanaka,Robson, Thomas Matthew,&Kurokawa, Hiroko.
MLA	Wang, Qing-Wei,et al."The contribution of photodegradation to litter decomposition in a temperate forest gap and understorey".NEW PHYTOLOGIST