Predicting soil fauna effect on plant litter decomposition by using boosted regression trees

doi:10.1016/j.soilbio.2014.12.016

CORC > 中国农业科学院 > 农业环境与可持续发展研究所 > 生态安全研究室

	Predicting soil fauna effect on plant litter decomposition by using boosted regression trees
	Zhang, Weidong 1,2; Yuan, Shufen 1,3; Hu, Ning 4; Lou, Yilai 4; Wang, Silong 1,2
刊名	SOIL BIOLOGY & BIOCHEMISTRY
	2015
卷号	82 页码:81-86
关键词	Boosted regression tree Soil fauna effect Climate Plant litter quality Litter decomposition Biomes
ISSN号	0038-0717
DOI	10.1016/j.soilbio.2014.12.016
通讯作者	Zhang, Weidong
英文摘要	Extensive studies have been conducted to evaluate the effect of soil fauna on plant litter decomposition in terrestrial ecosystems. However, scholars have reported inconsistent results on the direction and magnitude of the soil fauna effect. We present a global synthesis of 75 papers that cover 197 plant species with 543 cases of plant litter decomposition experiments and soil fauna effects on plant litter decomposition. By using a boosted regression tree model (BRT), we aim to provide a synthesis of existing data that comprehensively and quantitatively evaluates how climate, plant litter quality, and study methods interact with soil fauna in affecting plant litter decomposition. Global average effect size (ES) is -0.426, which indicates a 35% lower decomposition rate when soil fauna is excluded by physical or chemical exclusion techniques. The final model explains 32.3% of the variation in ES. The predictors that substantially account for the explained variation include mean annual temperature (MAT, 37.1%), mean annual precipitation (MAP, 9.7%), phosphorus (12.4%), nitrogen (5.6%), and lignin content (5.5%). By contrast, the heterogeneity of the study duration and soil fauna exclusion technique have negligible contributions (each <5%). Log effect size strongly decreases with both MAT and MAP. Plant litters with high quality have stronger soil fauna effect because the log effect size is negatively related to nitrogen and phosphorus content and positively related to lignin content. Our analysis demonstrates the critical role of climate and plant litter quality in determining the soil fauna effect on plant litter decomposition in terrestrial ecosystems. However, the large unexplained variation (67.7%) in ES in the BRT model indicates undiscovered mechanisms underlying the soil fauna effect in our analysis. We call for further studies on this topic in the future. (c) 2015 Elsevier Ltd. All rights reserved.
学科主题	Soil Science
语种	英语
出版者	PERGAMON-ELSEVIER SCIENCE LTD
WOS记录号	WOS:000351321200011
内容类型	期刊论文
源URL	[http://111.203.20.206/handle/2HMLN22E/19766]
专题	农业环境与可持续发展研究所_生态安全研究室
作者单位	1.Chinese Acad Sci, Inst Appl Ecol, State Key Lab Forest & Soil Ecol, Shenyang 110164, Peoples R China 2.Chinese Acad Sci, Huitong Expt Stn Forest Ecol, Huitong 418307, Peoples R China 3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 4.Chinese Acad Agr Sci, Inst Environm & Sustainable Dev Agr, Beijing 100081, Peoples R China
推荐引用方式 GB/T 7714	Zhang, Weidong,Yuan, Shufen,Hu, Ning,et al. Predicting soil fauna effect on plant litter decomposition by using boosted regression trees[J]. SOIL BIOLOGY & BIOCHEMISTRY,2015,82:81-86.
APA	Zhang, Weidong,Yuan, Shufen,Hu, Ning,Lou, Yilai,&Wang, Silong.(2015).Predicting soil fauna effect on plant litter decomposition by using boosted regression trees.SOIL BIOLOGY & BIOCHEMISTRY,82,81-86.
MLA	Zhang, Weidong,et al."Predicting soil fauna effect on plant litter decomposition by using boosted regression trees".SOIL BIOLOGY & BIOCHEMISTRY 82(2015):81-86.