干旱区生态环境知识资源中心(Arid): Baseline map of soil organic carbon in Tibet and its uncertainty in the 1980s

Arid

DOI	10.1016/j.geoderma.2018.07.037
	Baseline map of soil organic carbon in Tibet and its uncertainty in the 1980s
	Zhou, Y.1; Webster, R.2; Rossel, R. A. Viscarra 3; Shi, Z.1,4; Chen, S.5
通讯作者	Shi, Z.
来源期刊	GEODERMA
ISSN	0016-7061
EISSN	1872-6259
出版年	2019
卷号	334 页码:124-133
英文摘要	Much of the carbon (C) stored in the soil of the high Qinghai Tibet Plateau could be lost as a result of global warming. To provide a baseline against which to assess the loss we have made a new map at 90-m resolution from sample data of 1148 soil profiles augmented by information on climate, vegetation, physiography and digital elevation. We used the program Cubist, which works as a form of regression tree, to predict the concentration at the nodes of the 90-m grid. The uncertainty of the predictions was computed by bootstrapping 50 times at each node. Soil type, evapotranspiration (ET), precipitation, radiation and vegetation type contributed most to the variation in C at the coarse scale; temperature, net primary productivity, normalized difference vegetation index (NDVI), ET and elevation contributed most at finer scales. We mapped the predicted concentration of C and converted the predictions to stocks of C for the main kinds of land: 1.93 Pg for the alpine steppe, 1.57 Pg for the meadow, 0.66 Pg in the coniferous forest, 0.63 Pg in the broadleaf forest, 1.06 Pg under shrub, < 0.4 Pg for each of the alpine desert and cropland. We estimate the uppermost 30 cm of soil to contain 6.81 Pg of C with 95% (3.80 to 10.27 Pg). This estimate differs substantially from the two previous coarser estimates based on global modelling which far exceed our 95% upper confidence limit. Our new estimate can now serve as a base against which to judge any change of soil C as a response to global warming.
英文关键词	Soil organic carbon Digital soil mapping Tibetan Plateau Soil carbon stock Climate change
类型	Article
语种	英语
国家	Peoples R China ; England ; Australia ; France
收录类别	SCI-E
WOS记录号	WOS:000447116100015
WOS关键词	MOUNTAIN GRASSLANDS ; DEPTH FUNCTIONS ; WIND EROSION ; STOCKS ; STORAGE ; CLIMATE ; NORTHEAST ; FORESTS ; SCALE
WOS类目	Soil Science
WOS研究方向	Agriculture
来源机构	Commonwealth Scientific and Industrial Research Organisation
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/215911
作者单位	1.Zhejiang Univ, Coll Environm & Resource Sci, Hangzhou, Zhejiang, Peoples R China; 2.Rothamsted Res, Harpenden AL5 2JQ, Herts, England; 3.CSIRO, POB 1666, Canberra, ACT 2601, Australia; 4.Chinese Acad Sci, Inst Soil Sci, State Key Lab Soil & Sustainable Agr, Nanjing, Jiangsu, Peoples R China; 5.INRA, Unite Infosol, F-45075 Orleans, France
推荐引用方式 GB/T 7714	Zhou, Y.,Webster, R.,Rossel, R. A. Viscarra,et al. Baseline map of soil organic carbon in Tibet and its uncertainty in the 1980s[J]. Commonwealth Scientific and Industrial Research Organisation,2019,334:124-133.
APA	Zhou, Y.,Webster, R.,Rossel, R. A. Viscarra,Shi, Z.,&Chen, S..(2019).Baseline map of soil organic carbon in Tibet and its uncertainty in the 1980s.GEODERMA,334,124-133.
MLA	Zhou, Y.,et al."Baseline map of soil organic carbon in Tibet and its uncertainty in the 1980s".GEODERMA 334(2019):124-133.