Study on the Spreading of Environmental Impact of Human Being’ s Activities and Its Crucial Factors in Upper Minjiang River
文献类型：期刊论文
| 作者 | Fan Hong1; Zhao Hong-da2 |
| 刊名 | Wuhan University Journal of Natural Sciences
 |
| 出版日期 | 2003 |
| 卷号 | 8期号:3B页码:949-956 |
| 关键词 | historical period human being’s activities environmental impact |
| ISSN号 | 1007-1202 |
| 通讯作者 | Fan Hong |
| 英文摘要 | This paper focuses on the historical transition of human being’s activities and the eco-environment in the upper reaches of Minjiang River. The history is divided into 4 periods, each with its own feature. During the period of nomad immigration, the top-line of the subalpine forest was forced downward by the expanding subalpine meadow. During the period of farming nationality immigration, the bottom-line of middle mountain forest had moved upward forced by the needs for land or timber of the increasing population in the valley basia During the period of the early exploiting, the focus resource was the timber. The total output was limited, comparing with the later period, because of the bad accessibility. But it was large enough to impact the forest ecosystem of the deforesting area. The recent 50 years is the crucial period of economic development and eco-environment degradation. This paper points out that the impact of human being’s activities for environment lies on 3 factors: 1) physical features con |
| 学科主题 | X24 |
| 语种 | 英语 |
| 源URL | [http://ir.imde.ac.cn/handle/131551/10021]  |
| 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） |
| 作者单位 | 1.daCollege of Resources and Environment, Lanzhou University, Lanzhou 730000, Gansu, China 2.Institute of Mountain Hazards and Environment, Chinese Academy of Sciences, Chengdu 610041, Sichuan, China |
| 推荐引用方式 GB/T 7714 | Fan Hong,Zhao Hong-da. Study on the Spreading of Environmental Impact of Human Being’ s Activities and Its Crucial Factors in Upper Minjiang River[J]. Wuhan University Journal of Natural Sciences,2003,8(3B):949-956. |
| APA | Fan Hong,&Zhao Hong-da.(2003).Study on the Spreading of Environmental Impact of Human Being’ s Activities and Its Crucial Factors in Upper Minjiang River.Wuhan University Journal of Natural Sciences,8(3B),949-956. |
| MLA | Fan Hong,et al."Study on the Spreading of Environmental Impact of Human Being’ s Activities and Its Crucial Factors in Upper Minjiang River".Wuhan University Journal of Natural Sciences 8.3B(2003):949-956. |
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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