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| 基于DPSIR模型的云南省湖泊生态安全评价 |
| Evaluation of lake ecological security in Yunnan Province based on the DPSIR model |
| Received:March 04, 2021 |
| DOI：10.13254/j.jare.2021.0127 |
| 中文关键词: 高原湖泊，生态安全评价，驱动力-压力-状态-影响-响应模型，政策调控 |
| 英文关键词: plateau lake, ecological security evaluation, drivers-pressures-states-impacts-responses model, policy regulation |
| 基金项目:国家自然科学基金项目（22066023，41663016）；云南省科技计划项目（2018FD043） |
| Author Name | Affiliation | | HOU Lei | College of Ecology and Environment, Southwest Forestry University, Kunming 650224, China | | LU Jiangrong | College of Ecology and Environment, Southwest Forestry University, Kunming 650224, China | | LIANG Qibin | College of Ecology and Environment, Southwest Forestry University, Kunming 650224, China | | WANG Chen | College of Ecology and Environment, Southwest Forestry University, Kunming 650224, China |
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| 中文摘要: |
| 为探究云南省湖泊的生态安全变化趋势及驱动机制，在驱动力-压力-状态-影响-响应（DPSIR）模型框架下，建立了5个相应的项目层，选取16个反映生态安全状态的因子建立评价指标体系，基于公报、统计年鉴和规划数据对2009—2018年云南省湖泊生态安全状态进行评价。结果表明：云南省湖泊生态安全指数呈先下降后上升的趋势，2011年达到最低值0.153，其生态安全等级经历了3个类型，由Ⅳ级（较危险）经Ⅴ级（危险）向Ⅲ级（预警）转变，2014—2018年呈现稳步变好趋势；项目层指数变化趋势与生态安全指数一致，对生态安全指数贡献最大的状态层和影响层指数值偏低，湖泊水体化学需氧量、总氮及富营养化指数是限制因素；生态安全指数与压力层外的各指数间呈极显著正相关（P<0.01），反映出化学需氧量和氨氮排放量调控难度最大。研究表明，产业结构调整、截污治污、生态恢复等政策调控举措对改善云南省湖泊生态安全状态具有积极作用。 |
| 英文摘要: |
| In order to understand the trends and driving factors of the ecological security of lakes in Yunnan Province, 16 factors reflecting the ecological security state of the lakes were chosen and divided into five corresponding project layers based on the drivers-pressures-states-impacts-responses(DPSIR) model, allowing for an ecological security evaluation index system of such lakes to be constructed. Using data collected from bulletins, statistical year-books, and planning books from 2009 to 2018, the ecological security status of lakes in Yunnan Province was evaluated. The results showed that the ecological security index of these lakes showed a trend of first decreasing and then increasing and that the ecological security level of these lakes could be categorized into three types, from grade Ⅳ(dangerous) to grade Ⅴ(more dangerous) and then grade Ⅲ(early warning). The ecological security index reached the lowest value of 0.153 in 2011 and showed a steady improving trend from 2014 to 2018. The variation trend of the project layer index was consistent with that of the ecological security index, and the values of state and impact project layer indices, which contributed the most to the ecological security index, were relatively low. This phenomenon was attributed to the limiting factors such as chemical oxygen demand, total nitrogen, and eutrophication index. There were significant positive correlations(P<0.01) between the ecological security index and the index of each project layer with the exception of the pressure layer, which indicates that it was more difficult to regulate the emission load of chemical oxygen demand and ammonia nitrogen than other indicators. The results indicate that policy control measures such as the adjustment of industrial structures, pollution prevention and control, and ecological restoration have played a positive role in improving the ecological security of lakes in Yunnan Province. |
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