Effects of Grassland Degradation and Re-vegetation on Carbon and Nitrogen Storage in the Soils of the Headwater Area Nature Reserve on the Qinghai-Tibetan Plateau, China
文献类型：期刊论文
| 作者 | SU Xu-kun ; WU Yu ; DONG Shi-kui ; WEN Lu ; LI Yuan-yuan ; WANG Xue-xia |
| 刊名 | Journal of Mountain Science
 |
| 出版日期 | 2015-05 |
| 卷号 | 12期号:3页码:582-591 |
| 关键词 | Black soil beach Grassland degradation Soil loss Revegetation Alpine grasslands Soil carbon sequestration Soil nitrogen sequestration |
| ISSN号 | 1672-6316 |
| 通讯作者 | DONG Shi-kui |
| 英文摘要 | Both overgrazing and climate change contribute to grassland degradation in the alpine regions of China and negatively affect soil carbon and nitrogen pools. We quantified changes in soil organic carbon (SOC) and total nitrogen (TN) in black soil beach (BSB). We measured SOC and TN in severely degraded and non-degraded grasslands to calculate differences in carbon and nitrogen storage, and field survey results were extrapolated to the entire headwaters area of the Qinghai-Tibetan Plateau (36.3×105 km2) to determine SOC and TN losses from these grasslands. We also evaluated changes in SOC and TN in severely degraded grasslands that were artificially re-vegetated five, seven and nine years ago. Totally 92.43 Tg C and 7.08 Tg N were lost from the BSB in the headwater area, which was approximately 50% of the original C and N soil pools. Re-vegetation of the degraded grasslands in the headwater area would result in a gain of 32.71 Tg C in the soil after five years, a loss of 5.52 Tg C after seven years and an increase of 44.15 Tg C after nine years. The TN increased by 53.09% and 59.98% after five and nine years, respectively, while it decreased by 4.92% after seven years of re-vegetation. The results indicate that C and N stocks followed a “V” shaped pattern with re-vegetation time. Understanding plant-soil interactions during succession of artificially planting grassland ecosystems is essential for developing scientifically sound management strategies for the effectively re-vegetated BSB. |
| 收录类别 | SCI |
| 语种 | 英语 |
| 源URL | [http://ir.imde.ac.cn/handle/131551/9093]  |
| 专题 | 成都山地灾害与环境研究所_Journal of Mountain Science _Journal of Mountain Science-2015_Vol12 No.3 |
| 推荐引用方式 GB/T 7714 | SU Xu-kun,WU Yu,DONG Shi-kui,et al. Effects of Grassland Degradation and Re-vegetation on Carbon and Nitrogen Storage in the Soils of the Headwater Area Nature Reserve on the Qinghai-Tibetan Plateau, China[J]. Journal of Mountain Science,2015,12(3):582-591. |
| APA | SU Xu-kun,WU Yu,DONG Shi-kui,WEN Lu,LI Yuan-yuan,&WANG Xue-xia.(2015).Effects of Grassland Degradation and Re-vegetation on Carbon and Nitrogen Storage in the Soils of the Headwater Area Nature Reserve on the Qinghai-Tibetan Plateau, China.Journal of Mountain Science,12(3),582-591. |
| MLA | SU Xu-kun,et al."Effects of Grassland Degradation and Re-vegetation on Carbon and Nitrogen Storage in the Soils of the Headwater Area Nature Reserve on the Qinghai-Tibetan Plateau, China".Journal of Mountain Science 12.3(2015):582-591. |
入库方式： OAI收割
来源：成都山地灾害与环境研究所
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