植被生物量是全球碳循环的重要组成部分,是陆地生态系统与大气之间碳交换的重要环节,是定量研究全球气候变化与草地、荒漠生态系统之间的反馈调节作用等的基础。中国干旱半干旱区的草地、荒漠生态系统是重要的碳库类型,本文选取中国生...植被生物量是全球碳循环的重要组成部分,是陆地生态系统与大气之间碳交换的重要环节,是定量研究全球气候变化与草地、荒漠生态系统之间的反馈调节作用等的基础。中国干旱半干旱区的草地、荒漠生态系统是重要的碳库类型,本文选取中国生态系统研究网络(Chinese Ecosystem Research Network,CERN)中位于中国干旱半干旱区的2个草地生态系统观测研究站(海北站、内蒙古站)和5个荒漠生态系统类型观测研究站(鄂尔多斯站、阜康站、临泽站、奈曼站、沙坡头站)的典型生态系统,对其按照CERN生态系统长期观测规范开展长期观测获取的植被地上生物量的2005–2020年间生长季的月动态实测数据进行了收集整理与质量控制,并开展了样方原始调查数据到样地尺度观测数据的统计计算,生成了植被地上生物量数据集,可为中国干旱半干旱区草地和荒漠生态系统对全球气候变化响应及植被保育与可持续发展等研究提供地面观测数据支撑。展开更多
生态系统长期观测(Long-term Observation for Ecosystem,EcoLTO)是开展生态系统演变规律及生态系统对全球变化响应和适应等生态学研究的重要支撑手段,开展高质量监测、获取高质量数据、进行高效数据管理,提供优质数据共享服务是EcoLTO...生态系统长期观测(Long-term Observation for Ecosystem,EcoLTO)是开展生态系统演变规律及生态系统对全球变化响应和适应等生态学研究的重要支撑手段,开展高质量监测、获取高质量数据、进行高效数据管理,提供优质数据共享服务是EcoLTO的使命和目标。从“统一监测”“统一数据管理”到“统一数据产品管理”是实现EcoLTO数据管理目标所经历的3个循环上升阶段。本文提出EcoLTO产品化思想和EcoLTO数据产品概念,介绍具有自主知识产权的EcoLTO数据产品标准规范的概要组成,以及标准规范在中国生态系统研究网络(CERN)数据中心和国家生态科学数据中心(NESDC)“生态网络云”系统的产品存储库中的应用效果。实践证明标准规范具有可行性,可为我国相关行业、机构开展数据全生命周期中数据质量控制、数据产品开发及体系建立、数据管理及共享提供重要依据和参考。展开更多
生态系统长期观测(Long Term Observation for Ecosystem,简称EcoLTO)数据产品是在“统一监测”、“统一数据管理”过程中建成的规范化EcoLTO数据库基础上,通过进一步处理加工、分析挖掘后形成的更高质量的数据形态。数据产品能更好体现...生态系统长期观测(Long Term Observation for Ecosystem,简称EcoLTO)数据产品是在“统一监测”、“统一数据管理”过程中建成的规范化EcoLTO数据库基础上,通过进一步处理加工、分析挖掘后形成的更高质量的数据形态。数据产品能更好体现EcoLTO数据长期性、多样性、灵活性等特征。国家生态科学数据中心(NESDC)在将EcoLTO数据产品化过程中,需要研制EcoLTO数据产品规范,以便对“统一数据产品”的生产、质量控制、存储管理、开放共享发挥指导作用,进而支撑面向科研人员提供更高质量的产品共享服务。本文介绍了EcoLTO数据产品规范研制过程、产品规范的组成内容、产品规范在实践中的使用方法,并给出了产品规范在NESDC数据共享服务平台中的应用案例。本文可为数据产品的生产者、管理者及使用者理解EcoLTO数据产品规范提供参考,有助于产品规范的推广和应用。展开更多
An ecosystem communities with is one or many a variety of biotic (living organisms including plants, animals and microbes) and abiotic (things like air, water and mineral soil) components that function in an inter...An ecosystem communities with is one or many a variety of biotic (living organisms including plants, animals and microbes) and abiotic (things like air, water and mineral soil) components that function in an interrelated fashion (Chapin et al. 2012). These biotic and abiotic components linked together through nutrient cycles and energy flows (Chapin et al. 2012). Ecosystems provide humanity with a wide range of services, which are vital to sustaining human health and well-being, and social and economic development (MEA 2005). These services are categorized into provisioning, regulating,展开更多
Ecosystem carbon allocation can indicate ecosystem carbon cycling visually through its quantification within different carbon pools and carbon exchange.Using the ecological inventory and eddy covariance measurement ap...Ecosystem carbon allocation can indicate ecosystem carbon cycling visually through its quantification within different carbon pools and carbon exchange.Using the ecological inventory and eddy covariance measurement applied to both a mature temperate mixed forest in Changbai Mountain (CBM)and a mature subtropical evergreen forest in Dinghu Mountain (DHM),we partitioned the ecosystem carbon pool and carbon exchange into different components,determined the allocation and analyzed relationships within those components.Generally, the total carbon stock of CBM was slightly higher than that of DHM due to a higher carbon stock in the arbor layer at CBM.It was interesting that the proportions of carbon stock in vegetation,soil and litter were similar for the two mature forests.The ratio of vegetation carbon pool to soil carbon stock was 1.5 at CBM and 1.3 at DHM.However, more carbon was allocated to the trunk and root from the vegetation carbon pool at CBM,while more carbon was allocated to foliage and branches at DHM.Moreover,77% of soil carbon storage was limited to the surface soil layer (0-20cm),while there was still plentiful carbon stored in the deeper soil layers at DHM.The root/shoot ratios were 0.30 and 0.25 for CBM and DHM,respectively.The rates of net ecosystem productivity (NPP)to gross ecosystem productivity (GPP)were 0.76 and 0.58,and the ratios of ecosystem respiration (Re)to GPP were 0.98and 0.87for CBM and DHM,respectively.The net ecosystem carbon exchange/productivity (NEP)was 0.24t C ha^-1 yr^-1 for CBM and 3.38t C ha^-1 yr^-1 for DHM.Due to the common seasonal and inter-annual variations of ecosystem carbon exchange resulting from the influence of environmental factors,it was necessary to use the long record dataset to evaluate the ecosystem sink capacity.展开更多
文摘植被生物量是全球碳循环的重要组成部分,是陆地生态系统与大气之间碳交换的重要环节,是定量研究全球气候变化与草地、荒漠生态系统之间的反馈调节作用等的基础。中国干旱半干旱区的草地、荒漠生态系统是重要的碳库类型,本文选取中国生态系统研究网络(Chinese Ecosystem Research Network,CERN)中位于中国干旱半干旱区的2个草地生态系统观测研究站(海北站、内蒙古站)和5个荒漠生态系统类型观测研究站(鄂尔多斯站、阜康站、临泽站、奈曼站、沙坡头站)的典型生态系统,对其按照CERN生态系统长期观测规范开展长期观测获取的植被地上生物量的2005–2020年间生长季的月动态实测数据进行了收集整理与质量控制,并开展了样方原始调查数据到样地尺度观测数据的统计计算,生成了植被地上生物量数据集,可为中国干旱半干旱区草地和荒漠生态系统对全球气候变化响应及植被保育与可持续发展等研究提供地面观测数据支撑。
文摘生态系统长期观测(Long-term Observation for Ecosystem,EcoLTO)是开展生态系统演变规律及生态系统对全球变化响应和适应等生态学研究的重要支撑手段,开展高质量监测、获取高质量数据、进行高效数据管理,提供优质数据共享服务是EcoLTO的使命和目标。从“统一监测”“统一数据管理”到“统一数据产品管理”是实现EcoLTO数据管理目标所经历的3个循环上升阶段。本文提出EcoLTO产品化思想和EcoLTO数据产品概念,介绍具有自主知识产权的EcoLTO数据产品标准规范的概要组成,以及标准规范在中国生态系统研究网络(CERN)数据中心和国家生态科学数据中心(NESDC)“生态网络云”系统的产品存储库中的应用效果。实践证明标准规范具有可行性,可为我国相关行业、机构开展数据全生命周期中数据质量控制、数据产品开发及体系建立、数据管理及共享提供重要依据和参考。
文摘生态系统长期观测(Long Term Observation for Ecosystem,简称EcoLTO)数据产品是在“统一监测”、“统一数据管理”过程中建成的规范化EcoLTO数据库基础上,通过进一步处理加工、分析挖掘后形成的更高质量的数据形态。数据产品能更好体现EcoLTO数据长期性、多样性、灵活性等特征。国家生态科学数据中心(NESDC)在将EcoLTO数据产品化过程中,需要研制EcoLTO数据产品规范,以便对“统一数据产品”的生产、质量控制、存储管理、开放共享发挥指导作用,进而支撑面向科研人员提供更高质量的产品共享服务。本文介绍了EcoLTO数据产品规范研制过程、产品规范的组成内容、产品规范在实践中的使用方法,并给出了产品规范在NESDC数据共享服务平台中的应用案例。本文可为数据产品的生产者、管理者及使用者理解EcoLTO数据产品规范提供参考,有助于产品规范的推广和应用。
文摘An ecosystem communities with is one or many a variety of biotic (living organisms including plants, animals and microbes) and abiotic (things like air, water and mineral soil) components that function in an interrelated fashion (Chapin et al. 2012). These biotic and abiotic components linked together through nutrient cycles and energy flows (Chapin et al. 2012). Ecosystems provide humanity with a wide range of services, which are vital to sustaining human health and well-being, and social and economic development (MEA 2005). These services are categorized into provisioning, regulating,
基金National Key Research and Development Program of China(2017YFC0503801,2016YFC0500202)National Natural Science Foundation of China(31570446)Science and Technology Service Network Initiative(KFJ-SW-STS-169)
文摘Ecosystem carbon allocation can indicate ecosystem carbon cycling visually through its quantification within different carbon pools and carbon exchange.Using the ecological inventory and eddy covariance measurement applied to both a mature temperate mixed forest in Changbai Mountain (CBM)and a mature subtropical evergreen forest in Dinghu Mountain (DHM),we partitioned the ecosystem carbon pool and carbon exchange into different components,determined the allocation and analyzed relationships within those components.Generally, the total carbon stock of CBM was slightly higher than that of DHM due to a higher carbon stock in the arbor layer at CBM.It was interesting that the proportions of carbon stock in vegetation,soil and litter were similar for the two mature forests.The ratio of vegetation carbon pool to soil carbon stock was 1.5 at CBM and 1.3 at DHM.However, more carbon was allocated to the trunk and root from the vegetation carbon pool at CBM,while more carbon was allocated to foliage and branches at DHM.Moreover,77% of soil carbon storage was limited to the surface soil layer (0-20cm),while there was still plentiful carbon stored in the deeper soil layers at DHM.The root/shoot ratios were 0.30 and 0.25 for CBM and DHM,respectively.The rates of net ecosystem productivity (NPP)to gross ecosystem productivity (GPP)were 0.76 and 0.58,and the ratios of ecosystem respiration (Re)to GPP were 0.98and 0.87for CBM and DHM,respectively.The net ecosystem carbon exchange/productivity (NEP)was 0.24t C ha^-1 yr^-1 for CBM and 3.38t C ha^-1 yr^-1 for DHM.Due to the common seasonal and inter-annual variations of ecosystem carbon exchange resulting from the influence of environmental factors,it was necessary to use the long record dataset to evaluate the ecosystem sink capacity.