Soil organic carbon density in hebei province, china: estimates and uncertainty
文献类型：期刊论文
| 作者 | Zhao, YC; Shi, XZ; Yu, DS; Pagella, TF; Sun, WX; Xu, XH |
| 刊名 | Pedosphere
 |
| 出版日期 | 2005-06-01 |
| 卷号 | 15期号:3页码:293-300 |
| 关键词 | Professional pedological knowledge-based database (pkd) Soil organic carbon (soc) Soil profile database (spd) Soil profile statistics (sps) Uncertainty |
| ISSN号 | 1002-0160 |
| 通讯作者 | Shi, xz() |
| 英文摘要 | In order to improve the precision of soil organic carbon (soc) estimates, the sources of uncertainty in soil organic carbon density (socd) estimates and soc stocks were examined using 363 soil profiles in hebei province, china, with three methods: the soil profile statistics (sps), gis-based soil type (gst), and kriging interpolation (ki). the gst method, utilizing both pedological professional knowledge and gis technology, was considered the most accurate method of the three estimations, with socd estimates for sps 10% lower and ki 10% higher. the socd range for gst was 84% wider than ki as ki smoothing effect narrowed the socd range. nevertheless, the coefficient of variation for socd with ki (41.7%) was less than gst and sps. comparing socd's lower estimates for sps versus gst, the major sources of uncertainty were the conflicting area of proportional relations. meanwhile, the fewer number of soil profiles and the necessity of using the smoothing effect with ki were its sources of uncertainty. moreover, for local detailed variations of socd, gst was more advantageous in reflecting the distribution pattern than ki. |
| WOS关键词 | SPATIAL VARIABILITY ; STORAGE ; STOCKS |
| WOS研究方向 | Agriculture |
| WOS类目 | Soil Science |
| 语种 | 英语 |
| WOS记录号 | WOS:000229655800004 |
| 出版者 | SCIENCE PRESS |
| URI标识 | http://www.irgrid.ac.cn/handle/1471x/2377540 |
| 专题 | 中国科学院大学 |
| 通讯作者 | Shi, XZ |
| 作者单位 | 1.Chinese Acad Sci, Inst Soil Sci, State Key Lab Soil & Sustainable Agr, Nanjing 210008, Peoples R China 2.Univ Wales, Sch Agr & Forest Sci, Bangor, Gwynedd, Wales 3.Zhejiang Univ, Dept Environm Engn, Hangzhou 310029, Peoples R China 4.Chinese Acad Sci, Grad Sch, Beijing 100039, Peoples R China |
| 推荐引用方式 GB/T 7714 | Zhao, YC,Shi, XZ,Yu, DS,et al. Soil organic carbon density in hebei province, china: estimates and uncertainty[J]. Pedosphere,2005,15(3):293-300. |
| APA | Zhao, YC,Shi, XZ,Yu, DS,Pagella, TF,Sun, WX,&Xu, XH.(2005).Soil organic carbon density in hebei province, china: estimates and uncertainty.Pedosphere,15(3),293-300. |
| MLA | Zhao, YC,et al."Soil organic carbon density in hebei province, china: estimates and uncertainty".Pedosphere 15.3(2005):293-300. |
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来源：中国科学院大学
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