Response of carbon sequestration capacity of Sargassum thunbergii to water flow speed

The flowing seawater can provide the nutrients for the growth of marine plants, which plays a vital role in the growth and reproduction of marine plants. However, most of the current simulation physiological and ecological experiments ignored this important environmental factor. Although macroalgae is regarded as the emerging fourth category of blue carbon, there are few studies on its carbon sequestration. In this study, we design a carbon sequestration capacity measurement system of macroalgae that can adjust the flow speed, which can not only measure the photosynthetic rate, respiratory rate and the absorption rate of dissolved inorganic nitrogen (DIN) and dissolved inorganic phosphorus (DIP), but also measure the release rate of dissolved organic carbon (DOC) of macroalgae. The results show that the net photosynthetic rate, net primary productivity, DOC release rate and the absorption rate of DIN and DIP of Sargassum thunbergii are increased at medium (0.033 m/s) and high (0.094 m/s) flow speed compared with static status (0 m/s), and the highest values are obtained under high flow speed (0.094 m/s). In addition, the DOC release rate of S. thunbergii increased with the increase of the net primary productivity. This measurement system can provide a practical reference for the study of carbon sequestration capacity of macroalgae

北方典型海岛高质量发展策略与途径——以长岛为例

海岛是我国国土的重要组成部分,其高质量发展对海岛生态保护和可持续发展具有重要意义。长岛是山东省唯一的海岛型行政区,是国家级重点生态功能区。为实现我国北方海岛以绿色、低碳、循环为核心的高质量发展,本文以长岛为例,分析了其发展现状和存在问题,厘清了其高质量发展的理念和定位。通过实地调研和问卷调查等方法,提出了长岛生态文明综合试验区高质量发展的策略和途径,即以国家公园建设工程进行生态保护和修复,以零碳海岛建设工程旅游海岛建设工程和牧场海岛建设工程进行海岛开发和利用,以智慧海岛建设工程和科技海岛建设工程进行科技引领和支撑。六大工程陆海联动,共同推动长岛高质量发展,为我国北方典型海岛海洋生态文明建设及其高质量发展提供思路

北方典型海岛高质量发展策略与途径——以长岛为例

海岛是我国国土的重要组成部分,其高质量发展对海岛生态保护和可持续发展具有重要意义。长岛是山东省唯一的海岛型行政区,是国家级重点生态功能区。为实现我国北方海岛以绿色、低碳、循环为核心的高质量发展,本文以长岛为例,分析了其发展现状和存在问题,厘清了其高质量发展的理念和定位。通过实地调研和问卷调查等方法,提出了长岛生态文明综合试验区高质量发展的策略和途径,即以国家公园建设工程进行生态保护和修复,以零碳海岛建设工程旅游海岛建设工程和牧场海岛建设工程进行海岛开发和利用,以智慧海岛建设工程和科技海岛建设工程进行科技引领和支撑。六大工程陆海联动,共同推动长岛高质量发展,为我国北方典型海岛海洋生态文明建设及其高质量发展提供思路

北方草甸退化草地治理技术与示范

国家重点研发计划"北方草甸退化草地治理技术与示范"项目(2016YFC0500600),重点针对我国草甸和草甸草原生态系统所受干扰强度大、退化机理错综复杂、恢复机制及有效治理技术缺乏等问题,从"十三五"规划有关"美丽中国"、"绿色发展"与"生态文明"建设的战略需求出发,着重开展草地退化恢复机理、恢复治理技术、生态产业技术创新应用等三个方面的研究,创建可复制、可移植、系统性的综合治理技术及新型生态产业技术,提出草甸退化草地治理的整套技术方案,为我国草牧业与生态环境和谐发展、牧民稳定增收提供技术支撑