Combined deep sampling and mass-based approaches to assess soil carbon and nitrogen losses due to land-use changes in karst area of southwestern China
文献类型：期刊论文
| 作者 | Hu, Yecui; Du, Zhangliu3; Wang, Qibing1; Li, Guichun3 |
| 刊名 | SOLID EARTH
 |
| 出版日期 | 2016 |
| 卷号 | 7期号:4页码:1075-1084 |
| ISSN号 | 1869-9510 |
| DOI | 10.5194/se-7-1075-2016 |
| 文献子类 | Article |
| 英文摘要 | The conversion of natural vegetation to human-managed ecosystems, especially the agricultural systems, may decrease soil organic carbon (SOC) and total nitrogen (TN) stocks. The objective of present study was to assess SOC and TN stocks losses by combining deep sampling with mass-based calculations upon land-use changes in a typical karst area of southwestern China. We quantified the changes from native forest to grassland, secondary shrub, eucalyptus plantation, sugarcane and corn fields (both defined as croplands), on the SOC and TN stocks down to 100 cm depth using fixed-depth (FD) and equivalent soil mass (ESM) approaches. The results showed that converting forest to cropland and other types significantly led to SOC and TN losses, but the extent depended on both sampling depths and calculation methods selected (i.e., FD or ESM). On average, the shifting from native forest to cropland led to SOC losses by 19.1, 25.1, 30.6, 36.8 and 37.9% for the soil depths of 0-10, 0-20, 0-40, 0-60 and 0-100 cm, respectively, which highlighted that shallow sampling underestimated SOC losses. Moreover, the FD method underestimated SOC and TN losses for the upper 40 cm layer, but overestimated the losses in the deeper layers. We suggest that the ESM together with deep sampling should be encouraged to detect the differences in SOC stocks. In conclusion, the conversion of forest to managed systems, in particular croplands significantly decreased in SOC and TN stocks, although the effect magnitude to some extent depended on sampling depth and calculation approach selected. |
| 学科主题 | Geochemistry & Geophysics |
| 出版地 | GOTTINGEN |
| 电子版国际标准刊号 | 1869-9529 |
| WOS关键词 | ORGANIC-CARBON ; ROCKY DESERTIFICATION ; SEQUESTRATION ; STOCKS ; STORAGE ; IMPACT ; MATTER ; ACCUMULATION ; SUCCESSION ; INDICATORS |
| WOS研究方向 | Science Citation Index Expanded (SCI-EXPANDED) |
| 语种 | 英语 |
| WOS记录号 | WOS:000381217200006 |
| 出版者 | COPERNICUS GESELLSCHAFT MBH |
| 资助机构 | National Natural Science Foundation of ChinaNational Natural Science Foundation of China (NSFC) [70903061, 41171440] ; Fundamental Research Funds for the Central UniversitiesFundamental Research Funds for the Central Universities [2652015175] |
| 源URL | [http://ir.ibcas.ac.cn/handle/2S10CLM1/24985]  |
| 专题 | 植被与环境变化国家重点实验室 |
| 作者单位 | 1.Chinese Acad Agr Sci, Inst Environm & Sustainable Dev Agr, Beijing 100081, Peoples R China 2.Chinese Acad Sci, Inst Bot, Beijing 100093, Peoples R China 3.China Univ Geosci, Sch Land Sci & Tech, Beijing 100083, Peoples R China |
| 推荐引用方式 GB/T 7714 | Hu, Yecui,Du, Zhangliu,Wang, Qibing,et al. Combined deep sampling and mass-based approaches to assess soil carbon and nitrogen losses due to land-use changes in karst area of southwestern China[J]. SOLID EARTH,2016,7(4):1075-1084. |
| APA | Hu, Yecui,Du, Zhangliu,Wang, Qibing,&Li, Guichun.(2016).Combined deep sampling and mass-based approaches to assess soil carbon and nitrogen losses due to land-use changes in karst area of southwestern China.SOLID EARTH,7(4),1075-1084. |
| MLA | Hu, Yecui,et al."Combined deep sampling and mass-based approaches to assess soil carbon and nitrogen losses due to land-use changes in karst area of southwestern China".SOLID EARTH 7.4(2016):1075-1084. |
入库方式： OAI收割
来源：植物研究所
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