Impact of land use conversion on soil organic carbon stocks in an agro-pastoral ecotone of Inner Mongolia
文献类型：期刊论文
| 作者 | Zhao, W; Hu, ZM; Li, SG; Guo, Q; Yang, H; Zhang, TH |
| 刊名 | JOURNAL OF GEOGRAPHICAL SCIENCES
 |
| 出版日期 | 2017 |
| 卷号 | 27期号:8页码:999-1010 |
| 关键词 | soil organic carbon soil carbon profile land use change grazing tillage forest age |
| ISSN号 | 1009-637X |
| 英文摘要 | Soil organic carbon (SOC) stocks in terrestrial ecosystems vary considerably with land use types. Grassland, forest, and cropland coexist in the agro-pastoral ecotone of Inner Mongolia, China. Using SOC data compiled from literature and field investigations, this study compared SOC stocks and their vertical distributions among three types of ecosystems. The results indicate that grassland had the largest SOC stock, which was 1.5- and 1.8-folds more than stocks in forest and cropland, respectively. Relative to the stock in 0-100 cm depth, grassland held more than 40% of its SOC stock in the upper 20 cm soil layer; forest and cropland both held over 30% of their respective SOC stocks in the upper 20 cm soil layer. SOC stocks in grazed grasslands were remarkably promoted after >= 20 years of grazing exclusion. Conservational cultivation substantially increased the SOC stocks in cropland, especially in the 0-40 cm depth. Stand ages, tree species, and forest types did not have obvious impacts on forest SOC stocks in the study area likely due to the younger stand ages. Our study implies that soil carbon loss should be taken into account during the implementation of ecological projects, such as reclamation and afforestation, in the arid and semi-arid regions of China. |
| 学科主题 | Physical Geography |
| 语种 | 英语 |
| WOS记录号 | WOS:000401046200006 |
| 出版者 | SCIENCE PRESS |
| 源URL | [http://ir.igsnrr.ac.cn/handle/311030/44031]  |
| 专题 | 生态系统网络观测与模拟院重点实验室_生态网络实验室 |
| 推荐引用方式 GB/T 7714 | Zhao, W,Hu, ZM,Li, SG,et al. Impact of land use conversion on soil organic carbon stocks in an agro-pastoral ecotone of Inner Mongolia[J]. JOURNAL OF GEOGRAPHICAL SCIENCES,2017,27(8):999-1010. |
| APA | Zhao, W,Hu, ZM,Li, SG,Guo, Q,Yang, H,&Zhang, TH.(2017).Impact of land use conversion on soil organic carbon stocks in an agro-pastoral ecotone of Inner Mongolia.JOURNAL OF GEOGRAPHICAL SCIENCES,27(8),999-1010. |
| MLA | Zhao, W,et al."Impact of land use conversion on soil organic carbon stocks in an agro-pastoral ecotone of Inner Mongolia".JOURNAL OF GEOGRAPHICAL SCIENCES 27.8(2017):999-1010. |
入库方式： OAI收割
来源：地理科学与资源研究所
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