A holistic approach towards assessment of severity of land degradation along the Great Wall in Northern Shaanxi Province, China
文献类型：SCI/SSCI论文
| 作者 | Liu Y. S. ; Gao J. ; Yang Y. F. |
| 发表日期 | 2003 |
| 关键词 | China desertification risk land degradation sand-blown area severity assessment desertification |
| 英文摘要 | The farming and grazing interlocked transitional zone along the Great Wall in northern Shaanxi Province is particularly vulnerable to desertification due to its fragile ecosystem and intensive human activity. Studies reveal that desertification is both a natural and anthropogenic process. Four desertification indicators (vegetative cover, proportion of drifting sand area, desertification rate, and population pressure) were used to assess the severity of desertification in a GIS. The first three factors were derived from multitemporal remote sensing and land inventory data. The last factor was calculated from census data. It was found that the overall severity of land degradation in the study area has worsened during the last two decades with severely, highly and moderately degraded land accounting for 84.2% of the total area in 1998. While the area affected by desertification has increased, the rate of desertification has also accelerated from 0.74 to 0.87%. Risk of land degradation in the study area has increased, on an average, by 155% since 1985. Incorporation of both natural and anthropogenic factors in the analysis provides realistic assessment of risk of desertification. |
| 出处 | Environmental Monitoring and Assessment |
| 卷 | 82 |
| 期 | 2 |
| 页 | 187-202 |
| 收录类别 | SCI |
| 语种 | 英语 |
| ISSN号 | 0167-6369 |
| 源URL | [http://ir.igsnrr.ac.cn/handle/311030/23392]  |
| 专题 | 地理科学与资源研究所_历年回溯文献 |
| 推荐引用方式 GB/T 7714 | Liu Y. S.,Gao J.,Yang Y. F.. A holistic approach towards assessment of severity of land degradation along the Great Wall in Northern Shaanxi Province, China. 2003. |
入库方式： OAI收割
来源：地理科学与资源研究所
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