长江上游干暖河谷冲沟景观的发生演变
文献类型：期刊论文
| 作者 | 张建辉
|
| 刊名 | 世界科技研究与发展
 |
| 出版日期 | 2001 |
| 卷号 | 23期号:4页码:58 – 62 |
| 关键词 | 冲沟侵蚀 土地利用变化 干-暖河谷 青藏高原 |
| 其他题名 | Past Gully Development in the Warm-Dry Valley of Xichang, SW-China |
| 通讯作者 | 李勇 |
| 合作状况 | 国际 |
| 中文摘要 | 通过对小流域的航片、土壤剖面、泥沙堆积与土地利用历史等详尽的综合对比分析 ,定量评价了土地利用变化对冲沟发生演变的影响。在长江上游安宁河干暖河谷选择了两个代表性的冲沟 ,分别对其形状和土壤流失的体积进行了详细的野外调查、测定和计算。研究结果表明 ,西昌安宁河干暖河谷的冲沟侵蚀速率高达 375吨 /公顷 /年。西昌地区数百年来景观持续演变 ,特别是 2 0世纪中期人为强烈的不合理采伐森林、过度放牧和农业垦殖 ,造成了大量冲沟系统的形成和发展。采取以控制冲沟侵蚀为主的有效水土保持措施 ,对中国青藏高原东缘干旱河谷脆弱山地环境的生态恢复与重建具有重大实践意义 |
| 英文摘要 | Gully erosion due to overland flow is the most important issue for environment protection in Southwest China. The objective of this study is to investigate the development of past gully systems and their long-term relation to land use changes. The first investigations were carried out at the slopes bordering of the Anning Warm-Dry Valley of southern Sichuan in the territory of Xichang. Two gully systems were investigated in details. The size (length, average depth and width) and the volume of the gully system were measured in the field and calculated. The size of the surface catchment of the gully system was measured in the field, too. Air photos were analyzed, senior experts and farmers were interviewed for a detailed reconstruction of land use history. After several centuries of sustainable landscape development namely the intensive agricultural land use during the second half of the 20th century caused excessive floods and gullying in wide parts of southern Sichuan. Valley bottoms were flooded, rivers changed their position, many villages ceased there and lakes were filled with sediments. Gullying rates that could be reconstructed are unexpectedly high and strongly demand sudden successful measures of soil and water conservation. |
| 分类号 | S157.1 |
| 资助信息 | 中国科学院山地环境学“百人计划”(1999年度 );国家基金项目 (批准号 :No.40071054) |
| 语种 | 中文 |
| 公开日期 | 2014-05-13 |
| 源URL | [http://ir.imde.ac.cn/handle/131551/6920]  |
| 专题 | 成都山地灾害与环境研究所_成都山地所知识仓储（2009年以前） 成都山地灾害与环境研究所_山地表生过程与生态调控重点实验室 |
| 推荐引用方式 GB/T 7714 | 张建辉. 长江上游干暖河谷冲沟景观的发生演变[J]. 世界科技研究与发展,2001,23(4):58 – 62. |
| APA | 张建辉.(2001).长江上游干暖河谷冲沟景观的发生演变.世界科技研究与发展,23(4),58 – 62. |
| MLA | 张建辉."长江上游干暖河谷冲沟景观的发生演变".世界科技研究与发展 23.4(2001):58 – 62. |
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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