人类进入的21世纪,是一个人类真正需要进行生态反思的世纪。反思我们与自然的关系,反思我们与地球生命支持系统中植物、动物、抑或微生物的关系,反思我们与地球环境保障系统中的江河湖海、山川大地、森林草原、城镇乡村的关系。地球生...人类进入的21世纪,是一个人类真正需要进行生态反思的世纪。反思我们与自然的关系,反思我们与地球生命支持系统中植物、动物、抑或微生物的关系,反思我们与地球环境保障系统中的江河湖海、山川大地、森林草原、城镇乡村的关系。地球生物圈尚存的完整自然生态系统愈来愈少,人类未来生存、发展及适应全球变化的珍贵缓冲区(buffers)正快速萎缩,地球表面随处可见的3D系统(degraded,damaged and destroyed ecosystems)正快速增加,人类生命支撑系统中最为重要的生物多样性也正以前所未有的速度丧失,人类生存与发展之基失稳,亟待从生态保护理念出发,探索生态技术解决方案。在辨析生态、生态保护与生态修复内涵的基础上,基于文献计量学方法,以生态保护(ecological protection)和生态修复(ecological restoration)为主题词在Web of Science上检索了生态保护与生态修复近70年发文量及国际主流杂志发文量,分析了生态系统退化机制及驱动力,总结了国外生态保护与生态修复所依托的先进理论和技术方法,以期为我国生态系统保护与退化生态系统修复提供一定的理论指导。展开更多
Multiple natural and human factors in estuarine wetlands result in complicated land surface characteristics with distinct spatial and temporal heterogeneities,thereby contributing to the difficulty in identifying spat...Multiple natural and human factors in estuarine wetlands result in complicated land surface characteristics with distinct spatial and temporal heterogeneities,thereby contributing to the difficulty in identifying spatiotemporal variations and influencing factors of plant diversity.A unique estuarine wetland gradient system(UEWGS)consisting of soil,vegetation,heat,distance,landscape,and anthropogenic gradients was established based on the ecological features of estuarine wetland through remote sensing and field investigation methods.It resolved the complicated land surface characteristics,covered all aspects of factors influencing plant diversity,and possessed distinct spatiotemporal heterogeneities.The Yellow River Delta,the largest estuarine wetland in the northern China,was selected as the study area to demonstrate UEWGS in four seasons in 2017.A total of 123 species were recorded with considerable seasonal difference.Phragmites australis,Suaeda salsa,and Tamarix chinensis were the dominant species,and crop species also played important roles.In single effect,all aspects of gradients exerted significant influences,yet only vegetation gradient possessed significant influences in all seasons.In comprehensive effect,soil,vegetation,heat,and distance gradients showed significant gross influences.Moisture content in soil gradient and net primary productivity in vegetation gradient possessed significant net influences in all seasons and can be considered as the main driving factor and indicator,respectively,of plant diversity.The results validated the significance of UEWGS in revealing the plant diversity spatiotemporal characteristics and influencing factors,and UEWGS possessed universal applicability in the spatiotemporal analysis of plant diversity in estuarine areas.展开更多
文摘人类进入的21世纪,是一个人类真正需要进行生态反思的世纪。反思我们与自然的关系,反思我们与地球生命支持系统中植物、动物、抑或微生物的关系,反思我们与地球环境保障系统中的江河湖海、山川大地、森林草原、城镇乡村的关系。地球生物圈尚存的完整自然生态系统愈来愈少,人类未来生存、发展及适应全球变化的珍贵缓冲区(buffers)正快速萎缩,地球表面随处可见的3D系统(degraded,damaged and destroyed ecosystems)正快速增加,人类生命支撑系统中最为重要的生物多样性也正以前所未有的速度丧失,人类生存与发展之基失稳,亟待从生态保护理念出发,探索生态技术解决方案。在辨析生态、生态保护与生态修复内涵的基础上,基于文献计量学方法,以生态保护(ecological protection)和生态修复(ecological restoration)为主题词在Web of Science上检索了生态保护与生态修复近70年发文量及国际主流杂志发文量,分析了生态系统退化机制及驱动力,总结了国外生态保护与生态修复所依托的先进理论和技术方法,以期为我国生态系统保护与退化生态系统修复提供一定的理论指导。
基金Under the auspices of the National Natural Science Foundation of China(No.41871089)the Basic Scientific Fund for National Public Research Institutes of China(No.2018Q07)+3 种基金the National Natural Science Foundation of China(No.41971119)the Natural Science Foundation of Shandong Province(No.ZR2019MD024)Shandong Province University Youth Innovation Team(No.2019KJD010)the Open Research Fund Program of Shandong Provincial Key Laboratory of Eco-Environmental Science for Yellow River Delta(No.2019KFJJ01).
文摘Multiple natural and human factors in estuarine wetlands result in complicated land surface characteristics with distinct spatial and temporal heterogeneities,thereby contributing to the difficulty in identifying spatiotemporal variations and influencing factors of plant diversity.A unique estuarine wetland gradient system(UEWGS)consisting of soil,vegetation,heat,distance,landscape,and anthropogenic gradients was established based on the ecological features of estuarine wetland through remote sensing and field investigation methods.It resolved the complicated land surface characteristics,covered all aspects of factors influencing plant diversity,and possessed distinct spatiotemporal heterogeneities.The Yellow River Delta,the largest estuarine wetland in the northern China,was selected as the study area to demonstrate UEWGS in four seasons in 2017.A total of 123 species were recorded with considerable seasonal difference.Phragmites australis,Suaeda salsa,and Tamarix chinensis were the dominant species,and crop species also played important roles.In single effect,all aspects of gradients exerted significant influences,yet only vegetation gradient possessed significant influences in all seasons.In comprehensive effect,soil,vegetation,heat,and distance gradients showed significant gross influences.Moisture content in soil gradient and net primary productivity in vegetation gradient possessed significant net influences in all seasons and can be considered as the main driving factor and indicator,respectively,of plant diversity.The results validated the significance of UEWGS in revealing the plant diversity spatiotemporal characteristics and influencing factors,and UEWGS possessed universal applicability in the spatiotemporal analysis of plant diversity in estuarine areas.
