依据“生态安全格局-关键区-保护修复策略”思路,以江西省大余县为研究区,识别生态源地、生态“夹点”、障碍点、断裂点和破碎生态空间等关键区数量及空间分布,提出生态保护修复类型区及其相应措施。研究结果表明:(1)大余县生态源地共14...依据“生态安全格局-关键区-保护修复策略”思路,以江西省大余县为研究区,识别生态源地、生态“夹点”、障碍点、断裂点和破碎生态空间等关键区数量及空间分布,提出生态保护修复类型区及其相应措施。研究结果表明:(1)大余县生态源地共147.36 km 2,涉及林地、水域和草地,生态廊道69条,呈现出两横五纵的空间特征。研究识别生态“夹点”12处,生态障碍点13处,生态断裂点23处,破碎生态空间57.46 km 2。(2)生态保护修复类型区包括矿山修复区、山水治理区、农田整治区、农村建设用地整治区和交通用地优化区,建议分别采取矿山复绿、山体治理和水污染防控、农用地整理和耕地污染防控、居民点整合和农村道路复垦、建立野生动物通道和沿线植被恢复等策略。(3)基于生态安全格局构建,从区域整体视角识别生态保护修复关键区,依据关键区所覆盖土地利用类型划分生态保护修复类型区,并以此为基础提出系统性的保护修复策略。研究结果有助于资源枯竭型城市生态系统从关键点、线、面的修复工程向山水林田湖草系统修复推进。展开更多
[Objective] The study aimed to discuss the application of a stereo constructed wetland to the treatment of slightly polluted source water. [Method] In this study, a new stereo constructed wetland mode was put forward,...[Objective] The study aimed to discuss the application of a stereo constructed wetland to the treatment of slightly polluted source water. [Method] In this study, a new stereo constructed wetland mode was put forward, and a pilot project of water ecological purification in Xinsheng River, the diversion channel of Shijiuyang Waterwork in Jiaxing City, were analyzed. Afterwards, the impact factors of water purification by the technology were discussed from water quality and quantity, season and climate, species configuration, management and maintenance. [Result] Under three different hydraulic loading conditions, the pilot project effectively improved water SD and DO level, and reduced SS, CODCr, NH3-N, TN and TP significantly in summer and autumn, so that effluent water quality reached surface water standard at Grade III. [Conclusion] The stereo constructed wetland mode composed of constructed wetland and underwater forest used to treat slightly polluted source water is feasible and has a good promotion prospect.展开更多
As a key carrier supporting urban ecological health and living environment quality,urban ecological network is a key focus of current urban green space research.Jingzhou City of Hubei Province is taken as the research...As a key carrier supporting urban ecological health and living environment quality,urban ecological network is a key focus of current urban green space research.Jingzhou City of Hubei Province is taken as the research object.Relying on GIS technology platform,MSPA method is used to analyze the landscape pattern of Jingzhou City.On this basis,the landscape connectivity evaluation method is used to accurately identify and extract the source areas with important ecological value in Jingzhou City.Then,the normalization method and weighting method are combined to create a resistance factor evaluation system to construct the resistance surface.Based on the MCR model,the ecological network of Jingzhou City is successfully constructed,and targeted spatial optimization strategies and development suggestions are proposed.展开更多
文摘依据“生态安全格局-关键区-保护修复策略”思路,以江西省大余县为研究区,识别生态源地、生态“夹点”、障碍点、断裂点和破碎生态空间等关键区数量及空间分布,提出生态保护修复类型区及其相应措施。研究结果表明:(1)大余县生态源地共147.36 km 2,涉及林地、水域和草地,生态廊道69条,呈现出两横五纵的空间特征。研究识别生态“夹点”12处,生态障碍点13处,生态断裂点23处,破碎生态空间57.46 km 2。(2)生态保护修复类型区包括矿山修复区、山水治理区、农田整治区、农村建设用地整治区和交通用地优化区,建议分别采取矿山复绿、山体治理和水污染防控、农用地整理和耕地污染防控、居民点整合和农村道路复垦、建立野生动物通道和沿线植被恢复等策略。(3)基于生态安全格局构建,从区域整体视角识别生态保护修复关键区,依据关键区所覆盖土地利用类型划分生态保护修复类型区,并以此为基础提出系统性的保护修复策略。研究结果有助于资源枯竭型城市生态系统从关键点、线、面的修复工程向山水林田湖草系统修复推进。
基金Supported by National Science and Technology Project of Water Pollution Control and Management(2008ZX07421-001)
文摘[Objective] The study aimed to discuss the application of a stereo constructed wetland to the treatment of slightly polluted source water. [Method] In this study, a new stereo constructed wetland mode was put forward, and a pilot project of water ecological purification in Xinsheng River, the diversion channel of Shijiuyang Waterwork in Jiaxing City, were analyzed. Afterwards, the impact factors of water purification by the technology were discussed from water quality and quantity, season and climate, species configuration, management and maintenance. [Result] Under three different hydraulic loading conditions, the pilot project effectively improved water SD and DO level, and reduced SS, CODCr, NH3-N, TN and TP significantly in summer and autumn, so that effluent water quality reached surface water standard at Grade III. [Conclusion] The stereo constructed wetland mode composed of constructed wetland and underwater forest used to treat slightly polluted source water is feasible and has a good promotion prospect.
基金by Jingzhou Science and Technology Program(2023EC45).
文摘As a key carrier supporting urban ecological health and living environment quality,urban ecological network is a key focus of current urban green space research.Jingzhou City of Hubei Province is taken as the research object.Relying on GIS technology platform,MSPA method is used to analyze the landscape pattern of Jingzhou City.On this basis,the landscape connectivity evaluation method is used to accurately identify and extract the source areas with important ecological value in Jingzhou City.Then,the normalization method and weighting method are combined to create a resistance factor evaluation system to construct the resistance surface.Based on the MCR model,the ecological network of Jingzhou City is successfully constructed,and targeted spatial optimization strategies and development suggestions are proposed.
