Storage of Soil Organic Carbon and Its Spatial Variability in an Agro-Pastoral Ecotone of Northern China
文献类型：期刊论文
| 作者 | Zhang, Yanjiang1; Zhen, Qing1,2; Li, Pengfei3; Cui, Yongxing2; Xin, Junwei1; Yuan, Yuan1; Wu, Zhuhua1; Zhang, Xingchang1,2 |
| 刊名 | SUSTAINABILITY
 |
| 出版日期 | 2020-03-02 |
| 卷号 | 12期号:6页码:13 |
| 关键词 | spatial heterogeneity soil organic carbon content agro-pastoral ecotone geostatistical analysis |
| DOI | 10.3390/su12062259 |
| 通讯作者 | Zhang, Xingchang(zhangxc@ms.iswc.ac.cn) |
| 英文摘要 | Spatial distribution of soil organic carbon (SOC) is important for the development of ecosystem carbon cycle models and assessment of soil quality. In this study, a total of 732 soil samples from 122 soil profiles (0-10, 10-20, 20-40, 40-60, 60-80, and 80-100 cm) were collected by a combination of fixed-point sampling and route surveys in an agro-pastoral ecotone of northern China and the spatial variation of the SOC in the samples was analyzed through classical statistical and geostatistical approaches. The results showed that the SOC contents decreased from 4.31 g/kg in the 0-10 cm to 1.57 g/kg in the 80-100 cm soil layer. The spatial heterogeneity of the SOC exhibited moderate and strong dependence for all the soil layers owing to random and structural factors including soil texture, topography, and human activities. The spatial distributions of the SOC increased gradually from northeast to southwest in the 0-40 cm soil layers, but there was no general trend in deep soil layers and different interpolation methods resulted in the inconsistent spatial distribution of SOC. The storage of SOC was expected to be 25 Tg in the 0-100 cm soil depths for the whole area of 7692 km(2). The SOC stocks estimated by two interpolation approaches were very close (25.65 vs. 25.86 Tg), but the inverse distance weighting (IDW) interpolation generated a more detailed map of SOC and with higher determination coefficient (R-2); therefore, the IDW was recognized as an appropriate method to investigate the spatial variability of SOC in this region. |
| WOS关键词 | LOESS PLATEAU REGION ; LAND-USE ; TOTAL NITROGEN ; STOCKS ; SEQUESTRATION ; PHOSPHORUS ; AREA ; ACCUMULATION ; PLANTATIONS ; VEGETATION |
| 资助项目 | National Key Research and Development Program[2017YFC0504504] ; Fundamental Research Funds for the Central Universities[2452019014] ; Light ofWest China Program of Chinese Academy of Sciences[XAB2019B12] ; Science and Technology Service Network Initiative of the Chinese Academy of Science[KFJ-STS-QYZD-177] |
| WOS研究方向 | Science & Technology - Other Topics ; Environmental Sciences & Ecology |
| 语种 | 英语 |
| WOS记录号 | WOS:000523751400106 |
| 出版者 | MDPI |
| 资助机构 | National Key Research and Development Program ; Fundamental Research Funds for the Central Universities ; Light ofWest China Program of Chinese Academy of Sciences ; Science and Technology Service Network Initiative of the Chinese Academy of Science |
| 源URL | [http://ir.igsnrr.ac.cn/handle/311030/133712]  |
| 专题 | 中国科学院地理科学与资源研究所 |
| 通讯作者 | Zhang, Xingchang |
| 作者单位 | 1.Northwest A&F Univ, Coll Nat Resources & Environm, Yangling 712100, Shaanxi, Peoples R China 2.Chinese Acad Sci & Minist Water Resources, Inst Soil & Water Conservat, Yangling 712100, Shaanxi, Peoples R China 3.Minist Water Resources, Yellow River Conservancy Commiss, Upper & Middle Yellow River Bur, Xian 710021, Peoples R China |
| 推荐引用方式 GB/T 7714 | Zhang, Yanjiang,Zhen, Qing,Li, Pengfei,et al. Storage of Soil Organic Carbon and Its Spatial Variability in an Agro-Pastoral Ecotone of Northern China[J]. SUSTAINABILITY,2020,12(6):13. |
| APA | Zhang, Yanjiang.,Zhen, Qing.,Li, Pengfei.,Cui, Yongxing.,Xin, Junwei.,...&Zhang, Xingchang.(2020).Storage of Soil Organic Carbon and Its Spatial Variability in an Agro-Pastoral Ecotone of Northern China.SUSTAINABILITY,12(6),13. |
| MLA | Zhang, Yanjiang,et al."Storage of Soil Organic Carbon and Its Spatial Variability in an Agro-Pastoral Ecotone of Northern China".SUSTAINABILITY 12.6(2020):13. |
入库方式： OAI收割
来源：地理科学与资源研究所
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