Knowledge Resource Center for Ecological Environment in Arid Area
| 塔里木河下游生态风险评估 | |
| 其他题名 | Ecological Risk Assessment of The Lower Reaches of Tarim River |
| 史建康 | |
| 出版年 | 2008 |
| 学位类型 | 硕士 |
| 导师 | 包安明 |
| 学位授予单位 | 中国科学院新疆生态与地理研究所 |
| 中文摘要 | 塔里木河是我国最长的内陆河，是保障塔里木盆地绿洲经济、自然生态和各族人民生活的生命线。但长期以来，由于人类对流域自然资源，特别使水资源的不合理利用，使塔里木河干流水量减少、水质恶化、下游河水断流、植被衰败沙漠化扩大，生态环境不断恶化。本文从塔里木河流域的生态环境实际情况出发，以生态风险的评价体系为依据，以景观生态学为理论基础，以遥感影像资料和生态断面监测数据为基础信息源，以GIS为数据分析处理工具，分析塔里木河下游生态风险源、生态终点、以及生态风险源对生态终点的暴露和危害。通过计算生态风险度、风险损失度和生态易恢复度指数，构建综合生态风险指数，从而反映出塔里木河下游生态风险大小和空间分布状态。 |
| 英文摘要 | The Tarim river, which is the longest inland river of China, is the lifeline for ensuring the development of oasis economy, conservation of natural ecology and improvement of people’s life. However, during a long term, the unreasonable use of water resources caused the reduction of the discharge of main stream, the deterioration of the water quality,, zero flow of low reach, intensification of vegetation degradation and desertification. The ecological environment in this region worsens sharply. Based on the ecological environment of this region, the source of ecological risk, the end point of ecology, and the impacts of the ecological risk on the end point of ecology were analyzed by using the framework of the assessment of ecological risk and principles of landscape ecology. During the assessment, the basic information derived from remote sensing data and monitoring data of ecological sections. Geographical Information System (GIS) was the major tool for data analysis and processing. The extent of ecological risk and the corresponding spatial distribution were explained by the intensity index of ecological risk, which was deducted by calculation of degree of ecological risk, the factors of ecological degradation and the index of ecological restoration. |
| 中文关键词 | 生态损失度 ; 生态风险度 ; 易恢复度 ; 综合生态风险 ; 塔里木河下游 |
| 英文关键词 | Loss Degree Risk Degree Easy-restoration Degree Integrated Risk Lower Reaches of Tarim River |
| 语种 | 中文 |
| 国家 | 中国 |
| 来源学科分类 | 地图学与地理信息系统 |
| 来源机构 | 中国科学院新疆生态与地理研究所 |
| 资源类型 | 学位论文 |
| 条目标识符 | http://119.78.100.177/qdio/handle/2XILL650/286695 |
| 推荐引用方式 GB/T 7714 | 史建康. 塔里木河下游生态风险评估[D]. 中国科学院新疆生态与地理研究所,2008. |
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