| 三生空间角度的甘肃长江流域水生态安全评价及障碍诊断 |
| Water Ecological Security Evaluation and Diagnosis of Obstacles in the Yangtze River Basin of Gansu Province from the Perspective of Ecology-Life-Production Space |
| 投稿时间：2022-10-11 修订日期：2022-11-26 |
| DOI：10.15928/j.1674-3075.202210110405 |
| 中文关键词:三生空间 PSR模型 水生态安全 障碍因素 甘肃省长江流域 |
| 英文关键词:ecological-life-production space pressure-state-response model water ecological security obstacle factors Yangtze River basin of Gansu Province |
| 基金项目:甘肃省重点研发计划 (21YF5FA094)；甘肃省水利科学试验研究与技术推广计划（GSAU-JSYF-2021-006，GSAU-JSYF-2021-016） |
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| 中文摘要: |
| 探讨水生态安全驱动机制，为水资源管理、配置等工作提供科学依据。以甘肃省长江流域为研究区域，从生态、生活、生产3个空间角度构建基于压力-状态-响应模型（简称PSR）的水生态安全评价指标体系，根据研究区2011—2020年水资源等资料，运用熵值法、综合指数法评价水生态安全状况等级，并用障碍度模型识别影响水生态安全的主要障碍因子。结果表明：甘肃省长江流域水生态安全指数呈基本安全-较不安全-基本安全变化，2020年为较安全状态；2011—2020年期间，生态、生产空间是水生态安全状态的主要限制空间，压力和响应系统是水生态安全状态影响的主要限制系统；影响水生态安全状况的最大障碍因子随着年份变化不断发生变化，近2年来的主要驱动因素为生产空间和压力系统。近10年研究区水生态安全形势较好，结果可为长江上游相似流域水生态保护、区域高质量发展提供科学依据。 |
| 英文摘要: |
| Taking the Yangtze River basin in Gansu Province as the study area, we evaluated the status of water ecological security in the area and explored the driving factors affecting water ecological security from 2011 to 2020. The aim of the study was to provide scientific evidence for water resource management and allocation in Gansu Province. Based on water resource data for the study area (2011 - 2020), we developed a water ecological security evaluation system based on the pressure-state-response (PSR) model, including 24 indicators of ecology-life-production. The entropy method and comprehensive index method were then used to evaluate water ecological security, and the obstacle degree model to identify the primary obstacles affecting water ecological security. During the period from 2011 to 2020, the water ecological security status of the Yangtze River basin in Gansu Province changed from basic security, to less secure, and back to basic security. The highest comprehensive index value was 0.6123 in 2020 and the lowest value was 0.3341 in 2014. From the perspective of ecology-life-production, ecology, and production were more influential on the state of water ecological security from 2011 to 2020, with weight proportions of 36.37%, 36.12% and 27.51% for ecology, production, and life, respectively. From the perspective of pressure-state-response, the pressure and response systems were the primary drivers of water ecological security, with weight proportions of 35.45%, 31.20% and 33.36% for pressure, state, and response, respectively. The obstacle factors affecting the water ecological security changed by year, and the primary driving factors in the two most recent years were production space and the pressure system. In general, the water ecological security situation in the study area was good for the last 10 years. These results provide a scientific basis for water ecological protection and attaining regional high-quality in similar basins of the upper Yangtze River. |
| 牛最荣,贾玲.2023.三生空间角度的甘肃长江流域水生态安全评价及障碍诊断[J].水生态学杂志,44(2):19-25. |
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