Coarse root spatial distribution determined using a ground-penetrating radar technique in a subtropical evergreen broad-leaved forest, China

doi:10.1007/s11427-013-4560-7

	Coarse root spatial distribution determined using a ground-penetrating radar technique in a subtropical evergreen broad-leaved forest, China
	Yan Hui 1,2; Dong XinLiang 1; Feng Gang 1; Zhang ShouRen ; Mucciardi, Anthony 3
	2013
发表期刊	SCIENCE CHINA-LIFE SCIENCES
ISSN	1674-7305
卷号	56 期号:11 页码:1038-1046
摘要	Coarse roots play a critical role in forest ecosystems and both abiotic and biotic factors affect their spatial distribution. To some extent, coarse root density may reflect the quantity of root biomass and biotic competition in forests. However, using traditional methods (e.g., excavation) to study coarse roots is challenging, because those methods are time-consuming and laborious. Furthermore, these destructive methods cannot be repeated in the same forests. Therefore, the discovery of non-destructive methods for root studies will be very significant. In this study, we used a ground-penetrating radar technique to detect the coarse root density of three habitats (ridge, slope and valley) and the dominant tree species (Castanopsis eyrei and Schima superba) in a subtropical forest. We found that (i) the mean of coarse root density for these three habitats was 88.04 roots m(-2), with roots being mainly distributed at depths of 0-40 cm. Coarse root densities were lower in deeper soils and in areas far from the trunk. (ii) Coarse root densities differed significantly among the three habitats studied here with slope habitat having the lowest coarse root density. Compared with S. superba, C. eyrei had more roots distributed in deeper soils. Furthermore, coarse roots with a diameter > 3 cm occurred more frequently in the valleys, compared with root densities in ridge and slope habitats, and most coarse roots occurred at soil depths of 20-40 cm. (iii) The coarse root density correlated negatively with tree species richness at soil depths of 40-60 cm. The abundances of the dominant species, such as C. eyrei, Cyclobalanopsis glauca, Pinus massoniana, had significant impacts on coarse root density. (iv) The soil depth of 0-40 cm was the basic distribution layer for coarse roots since the majority of coarse roots were found in this soil layer with an average root density of 84.18 roots m(-2), which had no significant linear relationships with topography, tree species richness, rarefied tree species richness and tree density. Significant relationships between coarse root density and these factors were found at the soil depth of 40-60 cm, which was the potential distribution layer for coarse root distribution.
关键词	abiotic factors biotic factors coarse root density ground-penetrating radar (GPR) spatial distribution
学科领域	Biology
DOI	10.1007/s11427-013-4560-7
收录类别	SCI
语种	英语
WOS关键词	BIOMASS ; COMPETITION ; SYSTEMS ; OAK ; PLANTATIONS ; HYPOTHESIS ; DENSITY ; FLORIDA ; BEECH
WOS研究方向	Science Citation Index Expanded (SCI-EXPANDED)
WOS记录号	WOS:000326813300009
出版者	SCIENCE PRESS
文献子类	Article
出版地	BEIJING
EISSN	1869-1889
资助机构	National Natural Science Foundation of China(National Natural Science Foundation of China (NSFC))
作品OA属性	hybrid
引用统计	被引频次：11[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/2S10CLM1/28187
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 100093, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 3.Inner Mongolia Forestry Monitoring & Planning Aca, Hohhot 010020, Peoples R China 4.TreeRadar Inc, Silver Spring, MD 20910 USA
推荐引用方式 GB/T 7714	Yan Hui,Dong XinLiang,Feng Gang,et al. Coarse root spatial distribution determined using a ground-penetrating radar technique in a subtropical evergreen broad-leaved forest, China[J]. SCIENCE CHINA-LIFE SCIENCES,2013,56(11):1038-1046.
APA	Yan Hui,Dong XinLiang,Feng Gang,Zhang ShouRen,&Mucciardi, Anthony.(2013).Coarse root spatial distribution determined using a ground-penetrating radar technique in a subtropical evergreen broad-leaved forest, China.SCIENCE CHINA-LIFE SCIENCES,56(11),1038-1046.
MLA	Yan Hui,et al."Coarse root spatial distribution determined using a ground-penetrating radar technique in a subtropical evergreen broad-leaved forest, China".SCIENCE CHINA-LIFE SCIENCES 56.11(2013):1038-1046.

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