The Impact of Afforestation on Soil Organic Carbon Sequestration on the Qinghai Plateau, China

doi:10.1371/journal.pone.0116591

	The Impact of Afforestation on Soil Organic Carbon Sequestration on the Qinghai Plateau, China
	Shi, Sheng-wei ; Han, Peng-fei ; Zhang, Ping 2; Ding, Fan ; Ma, Cheng-lin
	2015
发表期刊	PLOS ONE
ISSN	1932-6203
卷号	10 期号:2
摘要	Afforestation, the conversion of non-forested land into forest, is widespread in China. However, the dynamics of soil organic carbon (SOC) after afforestation are not well understood, especially in plateau climate zones. For a total of 48 shrub- and/or tree-dominated afforestation sites on the Qinghai Plateau, Northwestern China, post-afforestation changes in SOC, total nitrogen (TN), the carbon-to-nitrogen ratio (C/N) and soil bulk density (BD) were investigated to a soil depth of 60 cm using the paired-plots method. SOC and TN accumulated at rates of 138.2 g C m(-2) yr(-1) and 4.6 g N m(-2) yr(-1), respectively, in shrub-dominated afforestation sites and at rates of 113.3 g C m(-2) yr(-1) and 6.7 g N m(-2)yr(-1), respectively, in tree-dominated afforestation sites. Soil BD was slightly reduced in all layers in the shrub-dominated afforestation plots, and significantly reduced in soil layers from 0-40cm in the tree-dominated afforestation plots. The C/N ratio was higher in afforested sites relative to the reference sites. SOC accumulation was closely related to TN accumulation following afforestation, and the inclusion of N-fixing species in tree-dominated afforestation sites additionally increased the soil accumulation capacity for SOC (p < 0.05). Multiple regression models including the age of an afforestation plot and total number of plant species explained 75% of the variation in relative SOC content change at depth of 0-20 cm, in tree-dominated afforestation sites. We conclude that afforestation on the Qinghai Plateau is associated with great capability of SOC and TN sequestration. This study improves our understanding of the mechanisms underlying SOC and TN accumulation in a plateau climate, and provides evidence on the C sequestration potentials associated with forestry projects in China.
学科领域	Multidisciplinary Sciences
DOI	10.1371/journal.pone.0116591
收录类别	SCI
语种	英语
WOS关键词	LAND-USE CHANGE ; VERTICAL-DISTRIBUTION ; AGRICULTURAL SOILS ; NITROGEN ADDITIONS ; STOCKS ; FOREST ; ACCUMULATION ; GRASSLAND ; DYNAMICS ; MATTER
WOS研究方向	Science Citation Index Expanded (SCI-EXPANDED)
WOS记录号	WOS:000350662100041
出版者	PUBLIC LIBRARY SCIENCE
文献子类	Article
出版地	SAN FRANCISCO
资助机构	national key fundamental research program for the Chinese Science and Technology Department [2010CB950604]
作者邮箱	weiweishi848@gmail.com
作品OA属性	Green Published, Green Submitted, gold
引用统计	被引频次：20[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/2S10CLM1/25989
专题	植被与环境变化国家重点实验室
作者单位	1.[Shi, Sheng-wei 2.Han, Peng-fei 3.Chinese Acad Sci, State Key Lab Atmospher Boundary Layer Phys & Atm, Inst Atmospher Phys, Beijing 100083, Peoples R China 4.Ding, Fan 5.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 6.Northwest A&F Univ, Coll Forestry, Yangling 712100, Shaanxi, Peoples R China 7.[Ding, Fan 8.Chinese Acad Sci, Inst Bot, State Key Lab Vegetat & Environm Change, Beijing 100093, Peoples R China
推荐引用方式 GB/T 7714	Shi, Sheng-wei,Han, Peng-fei,Zhang, Ping,et al. The Impact of Afforestation on Soil Organic Carbon Sequestration on the Qinghai Plateau, China[J]. PLOS ONE,2015,10(2).
APA	Shi, Sheng-wei,Han, Peng-fei,Zhang, Ping,Ding, Fan,&Ma, Cheng-lin.(2015).The Impact of Afforestation on Soil Organic Carbon Sequestration on the Qinghai Plateau, China.PLOS ONE,10(2).
MLA	Shi, Sheng-wei,et al."The Impact of Afforestation on Soil Organic Carbon Sequestration on the Qinghai Plateau, China".PLOS ONE 10.2(2015).

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