Controls on soil dissolved organic carbon along the 4000 km North-South forest transect in Eastern China

doi:10.1016/j.catena.2022.106691

	Controls on soil dissolved organic carbon along the 4000 km North-South forest transect in Eastern China
	Gu, Jie 1,2; Bol, Roland 2,3; Wang, Yang 4; Zhang, Huanchao 1
	2023
发表期刊	CATENA
ISSN	0341-8162
卷号	220
摘要	Dissolved organic carbon (DOC) is both a potential source and stability indicator of soil organic carbon (SOC), and plays a pivotal role in global C cycling and sequestration. However, at a large scale, still not enough in-formation is known about relations between DOC in soils and various controlling factors in natural forest eco-systems. We sampled 252 soil samples (6 replicates and 3 depths for each site) from four long-term forest ecosystem stations in Changbaishan, Beijng Donglingshan, Shennongjia and Dinghushan along a 4000 km North -South transect in Eastern China. We found that higher soil DOC concentrations were observed in subtropical forests over the North-South transect. The highest and lowest DOC concentrations in the upper 60 cm soil layer were found in monsoon evergreen broadleaved forest (DIII, 113.8 +/- 1.4 mg C/L) and Yue spruce-fir forest (CIII, 57.6 +/- 3.0 mg C/L), respectively. The Haplic ferralsol (DII-DIV, 89.7 mg C/L) and Haplic Andosol (CIII, 57.6 mg C/L) showed the highest and the lowest DOC concentrations in the upper 60 cm soil layer, respectively. The soil DOC concentrations generally decreased from surface soil to subsoil in the forests with mean annual precipitation (MAP) >= 1500 mm. The lower proportion of DOC accounting for SOC in the upper 20 cm soil layer in temperate forests, among which Yue spruce-fir forest (CIII, 3.2 %) presented the lowest ratio, indicated a larger long-term soil C sequestration potential. The DOC concentrations in the upper 60 cm soil layer significantly correlated with mean annual temperature (MAT) (R2 = 0.50) and MAP (R2 = 0.46). However, in the upper 20 cm soil layer, forest type (R2 = 0.48) was the most significant correlation factor to DOC concentration. We concluded that in the North-South transect of Eastern China, MAT, MAP and forest type are the most significant large-scale factors controlling soil DOC, with temperate forests (especially Yue spruce-fir forest) possessing the highest long-term soil C sequestration potential.
关键词	Soil dissolved organic carbon Temperature and precipitation Forest type North -South transect of eastern China Climate change
学科领域	Geosciences, Multidisciplinary ; Soil Science ; Water Resources
DOI	10.1016/j.catena.2022.106691
收录类别	SCI
语种	英语
WOS关键词	COARSE WOODY DEBRIS ; NITROGEN DON ; LITTER DECOMPOSITION ; MINERAL SURFACES ; NORWAY SPRUCE ; LAND-USE ; MATTER ; DYNAMICS ; TEMPERATURE ; FLUXES
WOS研究方向	Science Citation Index Expanded (SCI-EXPANDED)
WOS记录号	WOS:000877327800001
出版者	ELSEVIER
文献子类	Article
出版地	AMSTERDAM
EISSN	1872-6887
资助机构	Chinese Academy of Science ; Priority Academic Program Development of Jiangsu Higher Education Institutions ; [164010595]
作者邮箱	jiegu@njfu.edu.cn ; r.bol@fz-juelich.de ; wangyang88@ibcas.ac.cn ; hczhang@njfu.edu.cn
作品OA属性	Bronze
引用统计	被引频次：8[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/2S10CLM1/29134
专题	植被与环境变化国家重点实验室
作者单位	1.Nanjing Forestry Univ, Coll Forestry, Nanjing, Peoples R China 2.Nanjing Forestry Univ, Coinnovat Ctr Sustainable Forestry Southern China, Nanjing, Peoples R China 3.Forschungszentrum Julich, Inst Bio & Geosci Agrosphere IBG 3, Julich, Germany 4.Bangor Univ, Sch Environm Nat Resources & Geog, Bangor, Wales 5.Chinese Acad Sci, Inst Bot, State Key Lab Vegetat & Environm Change, Beijing, Peoples R China
推荐引用方式 GB/T 7714	Gu, Jie,Bol, Roland,Wang, Yang,et al. Controls on soil dissolved organic carbon along the 4000 km North-South forest transect in Eastern China[J]. CATENA,2023,220.
APA	Gu, Jie,Bol, Roland,Wang, Yang,&Zhang, Huanchao.(2023).Controls on soil dissolved organic carbon along the 4000 km North-South forest transect in Eastern China.CATENA,220.
MLA	Gu, Jie,et al."Controls on soil dissolved organic carbon along the 4000 km North-South forest transect in Eastern China".CATENA 220(2023).

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