The spatial patterns of litter turnover time in Chinese terrestrial ecosystems

doi:10.1111/ejss.12922

	The spatial patterns of litter turnover time in Chinese terrestrial ecosystems
	Cai, Andong 1,2,3; Chang, Naijie 1; Zhang, Wenju 1; Liang, Guopeng 4; Zhang, Xubo 5; Hou, Enqing 6; Jiang, Lifen 3; Chen, Xianni 7; Xu, Minggang 1; Luo, Yiqi 3
刊名	EUROPEAN JOURNAL OF SOIL SCIENCE
	2020-01-08
页码	12
关键词	climate litter quality litter turnover time soil property terrestrial ecosystems
ISSN号	1351-0754
DOI	10.1111/ejss.12922
通讯作者	Xu, Minggang(xuminggang@caas.cn)
英文摘要	The feedback between plant, soil and climate is partly determined by plant litter turnover time, which is influenced by climate, litter quality and soil properties. However, the spatial patterns of litter turnover time and its interrelation with these variables are rarely quantified. With a database of 1,378 litter turnover times and key associated climate, litter quality and soil properties (total of 20 variables), this study investigated the driving factors and spatial patterns of litter turnover time across Chinese terrestrial ecosystems. The mean litter turnover time was the longest in forest ecosystems, followed by that in grassland and cropland ecosystems. The litter turnover time varied significantly depending on the litter quality and climate zone, and increased exponentially as latitude increased. Mean annual temperature (MAT) and mean annual precipitation (MAP) could accurately predict litter turnover time via negative exponential equations. Among these variables, MAT had the greatest influence on litter turnover time, which accounted for 37.4% of the variation, followed by litter quality (ecosystem types, litter types, C:N of litter and lignin content; 33.4%) and soil properties (sand content, soil pH and soil organic carbon (SOC); 29.2%) based on a boosted regression tree (BRT) model. Path analysis identified that MAT negatively affected litter turnover time both directly and indirectly through regulating soil properties and litter quality, which positively and directly affected litter turnover time. Finally, the spatial patterns of litter turnover time were obtained with a regional dataset of ecosystem types, MAT, sand content, soil pH and SOC as BRT model drivers. Overall, our results suggest that climate variables have contrasting effects on litter turnover time and could mediate the impact on litter turnover time by litter quality and soil properties. These results highlight important implications for climate-smart soil management and can be used to create reliable model predictions. Highlights We explored the driving factors and spatial patterns of litter turnover time in various ecosystems Accurate estimates of litter turnover time were obtained from dataset from 1,378 experimental sites Litter turnover time exponentially increased as latitude increased Climate-mediated litter quality and soil properties controlled the litter turnover time
资助项目	Chinese Government Scholarship ; National Natural Science Foundation of China[41620104006] ; National Natural Science Foundation of China[41571298] ; National Natural Science Foundation of China[U1710255]
WOS关键词	SOIL ORGANIC-CARBON ; DECOMPOSITION RATES ; TEMPERATURE-DEPENDENCE ; GLOBAL PATTERNS ; DYNAMICS ; CLIMATE ; AVAILABILITY ; GRASSLANDS ; EQUATION ; QUALITY
WOS研究方向	Agriculture
语种	英语
出版者	WILEY
WOS记录号	WOS:000506027500001
资助机构	Chinese Government Scholarship ; National Natural Science Foundation of China
内容类型	期刊论文
源URL	[http://ir.igsnrr.ac.cn/handle/311030/130900]
专题	中国科学院地理科学与资源研究所
通讯作者	Xu, Minggang
作者单位	1.Chinese Acad Agr Sci, Natl Engn Lab Improving Qual Arable Land, Inst Agr Resources & Reg Planning, Beijing, Peoples R China 2.Chinese Acad Agr Sci, Inst Environm & Sustainable Dev Agr, Key Lab Agroenvironm, Minist Agr, Beijing, Peoples R China 3.No Arizona Univ, Dept Biol Sci, Ctr Ecosyst Sci & Soc, Box 5640China, Flagstaff, AZ 86011 USA 4.Utah State Univ, Dept Biol, Logan, UT 84322 USA 5.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Key Lab Ecosyst Network Observat & Modeling, Beijing, Peoples R China 6.Chinese Acad Sci, Key Lab Vegetat Restorat & Management Degraded Ec, South China Bot Garden, Guangzhou, Peoples R China 7.Henan Univ Sci & Technol, Coll Agr, Luoyang, Peoples R China
推荐引用方式 GB/T 7714	Cai, Andong,Chang, Naijie,Zhang, Wenju,et al. The spatial patterns of litter turnover time in Chinese terrestrial ecosystems[J]. EUROPEAN JOURNAL OF SOIL SCIENCE,2020:12.
APA	Cai, Andong.,Chang, Naijie.,Zhang, Wenju.,Liang, Guopeng.,Zhang, Xubo.,...&Luo, Yiqi.(2020).The spatial patterns of litter turnover time in Chinese terrestrial ecosystems.EUROPEAN JOURNAL OF SOIL SCIENCE,12.
MLA	Cai, Andong,et al."The spatial patterns of litter turnover time in Chinese terrestrial ecosystems".EUROPEAN JOURNAL OF SOIL SCIENCE (2020):12.