Study on Ecological Restoration Model of the Fluctuating Belt of Reservoir at the Xueye Lake in Laiwu City, Shandong Province

Fluctuating belt of reservoir is a dry-wet alternating area with special ecological conditions, quality of its ecological environment directly infl uences the reservoir ecosystem. This paper, on the basis of analyzing ecological functions and problems of the reservoir fl uctuating belt, elaborated the ecological restoration of the fl uctuating belt of the Xueye Lake in Shandong Province. According to the coastal planning types and water resource conservation needs, 4 ecological restoration models were given, i.e., pond wetland model, terraced fi eld model, conservation model, and consolidated embankment model(or Baokan model), and also 7 vegetation restoration models. Landscape planning and design of the reservoir fl uctuating belt was reviewed from the perspective of ecological restoration, to establish the eco-friendly fl uctuating belt, and this study has high promotional value.

基于RSEI与FAI模型的浙江千岛湖乡村岸水协同修复与生态功能区划研究

千岛湖是截蓄新安江水流而成的山地型人工湖泊,陆域水土流失与水域富营养化问题是导致库区整体生态环境质量下降的两大关键性因素。选取千岛湖人类活动最为频繁的40个河口村镇作为研究对象,聚焦98~118m高程的岸水交接地带,基于水陆耦合协调的视角,探究该地带在生态过程中水土流失与水体富营养化问题的岸水协同生态修复治理方案,旨在解决“岸水空间生态功能区划如何兼顾应对陆域水土流失与水域富营养化两方面生态风险”的关键性水生态修复问题,建立水体治理的长效机制。根据千岛湖正常高水位,以108~118m高程为陆域范围,以98~108m高程为水域范围,基于研究区域的landsat8卫星遥感数据,运用RSEI模型评价陆域水土流失状况,运用FAI模型评价水域富营养化状况,二者耦合协调分析获得水陆生态环境质量的耦合协调发展水平,据此研判关键性水生态问题并分区提出岸水协同生态修复治理措施。结果表明,中度失调河口2个,轻度失调河口2个,濒临失调河口1个,勉强协调河口5个,初级协调河口10个,中级协调河口9个,良好协调河口11个;根据耦合协调发展水平将40个河口村镇划分为三级生态功能区,其中一级生态功能区重点强化治污措施、二级生态功能区重点提高生态韧性、三级生态功能区重点促进价值转换。

山东莱芜雪野湖水库消落带生态修复策略研究

水库消落带是一种生态条件特殊的干湿交替区,其生态状况的优劣影响着水库生态系统。该文在分析水库消落带生态功能和生态问题的基础上,详细阐述了山东莱芜雪野湖水库消落带生态修复案例。依据雪野湖库区不同岸线规划类型和水资源保护需要,提出了四种生态修复模式:水塘湿地模式、梯田湿地模式、保育模式、堡坎加固模式,以及七种植被修复方式。从生态修复的角度重新审视水库消落带景观规划设计,构建生态友好型的消落带区域,具有推广价值。