气候变化领域集成服务门户(CCPortal): Effect of precipitation frequency on litter decomposition of three annual species (Setaria viridis, Artemisia sacrorum, and Chenopodium acuminatum) in a semi-arid sandy grassland of northeastern China

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DOI	10.1080/15324982.2021.1921881
	Effect of precipitation frequency on litter decomposition of three annual species (Setaria viridis, Artemisia sacrorum, and Chenopodium acuminatum) in a semi-arid sandy grassland of northeastern China
	Luo, Yongqing; Zhou, Jing; Yue, Xiangfei; Ding, Jieping
通讯作者	Yue, XF (通讯作者)，Chinese Acad Sci, Northwest Inst Ecoenvironm & Resources, Naiman Desertificat Res Stn, Lanzhou, Peoples R China. ; Zhou, J (通讯作者)，Gansu Acad Ecoenvironm Sci, Inst Water Environm Res, Lanzhou, Peoples R China.
发表日期	2021
ISSN	1532-4982
EISSN	1532-4990
起始页码	397
结束页码	413
卷号	35 期号:4
英文摘要	Annual total precipitation typically fails to predict litter decomposition rates, especially in semi-arid regions, where precipitation frequency (PF) significantly affects decomposition. We hypothesized that low PF would decrease decomposition rates. We performed a litterbag decomposition experiment with litter of three annual species at three depths (aboveground litter, litter at 0-10 and 10-20 cm below the surface). We used the same total amount (280 mm), but three precipitation frequencies (PF1, 10 mm every 5 days; PF2, 20 mm every 10 days; PF3, 40 mm every 20 days) during the growing season. We measured the remaining mass, carbon (C) content, nitrogen (N) content, C:N ratio, and C and N losses of each species at the three positions. Litter decomposition and the C and N dynamics were influenced by species, depth, and PF. Low PF significantly decreased litter decomposition (mass loss rates of 49.7, 49.1, and 41.2% for PF1, PF2, and PF3, respectively). This effect interacted with placement-depth but not with species. This interaction also existed for C and N dynamics except for the N loss rate. The influence of PF on C loss mainly resulted from its effect on mass loss, whereas N loss was not affected by PF. Our results highlight the importance of PF for litter decomposition in a semi-arid region. The relationship between PF and litter decomposition provides a theoretical basis for regional carbon-cycle models and carbon budget predictions. Our results also suggest that non-graminaceous species showed higher potential than grasses for improving soil carbon in semi-arid sandy grasslands due to faster decomposition rates, especially below ground.
关键词	SOIL RESPIRATION CLIMATE-CHANGE INNER-MONGOLIA WATER PULSES RESPONSES CARBON PATTERNS STABILIZATION STEPPE
英文关键词	Carbon loss; litter decomposition; nitrogen loss; precipitation frequency; semi-arid sandy grassland
语种	英语
WOS研究方向	Environmental Sciences & Ecology ; Agriculture
WOS类目	Environmental Sciences ; Soil Science
WOS记录号	WOS:000647374500001
来源期刊	ARID LAND RESEARCH AND MANAGEMENT
来源机构	中国科学院西北生态环境资源研究院
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/253839
作者单位	[Luo, Yongqing; Yue, Xiangfei] Chinese Acad Sci, Northwest Inst Ecoenvironm & Resources, Naiman Desertificat Res Stn, Lanzhou, Peoples R China; [Zhou, Jing; Ding, Jieping] Gansu Acad Ecoenvironm Sci, Inst Water Environm Res, Lanzhou, Peoples R China; [Yue, Xiangfei] Chinese Acad Geol Sci, Inst Karst Geol, Key Lab Karst Ecosyst & Treatment Rocky Desertifi, Guilin, Peoples R China
推荐引用方式 GB/T 7714	Luo, Yongqing,Zhou, Jing,Yue, Xiangfei,et al. Effect of precipitation frequency on litter decomposition of three annual species (Setaria viridis, Artemisia sacrorum, and Chenopodium acuminatum) in a semi-arid sandy grassland of northeastern China[J]. 中国科学院西北生态环境资源研究院,2021,35(4).
APA	Luo, Yongqing,Zhou, Jing,Yue, Xiangfei,&Ding, Jieping.(2021).Effect of precipitation frequency on litter decomposition of three annual species (Setaria viridis, Artemisia sacrorum, and Chenopodium acuminatum) in a semi-arid sandy grassland of northeastern China.ARID LAND RESEARCH AND MANAGEMENT,35(4).
MLA	Luo, Yongqing,et al."Effect of precipitation frequency on litter decomposition of three annual species (Setaria viridis, Artemisia sacrorum, and Chenopodium acuminatum) in a semi-arid sandy grassland of northeastern China".ARID LAND RESEARCH AND MANAGEMENT 35.4(2021).