Sandy desertification is land degradation characterized by wind erosionmainly resulted from the excessive human activities in arid, semiarid and part of sub-humid regionsin northern China, The research on sandy desert...Sandy desertification is land degradation characterized by wind erosionmainly resulted from the excessive human activities in arid, semiarid and part of sub-humid regionsin northern China, The research on sandy desertification has experienced more than 5 decades ofarduous course of the struggle along with the establishment and development of China's desertscience. Researches in this field have made a great contribution to the national economicconstruction, and environmental protection. This paper focuses on presenting the major progress andachievements in the sandy desertification research during the last 50 years, including the stages ofstudy on sandy desertification, background environment of sandy desertification and its changes,the conception, causes, process, monitoring and assessment of sandy desertification, the vegetationsuccession, landscape ecology, plant physiology, impacts on ecosystem, high-effective use of waterand land resources and sustainable development in sandy desertified regions, sandy desertificationcontrol models and techniques etc.展开更多
To investigate allelopathy of plants in desert ecosystems, related research achievements obtained in recent years, reported allelopathic plants, allelochemicals and releasing ways of alleochemicalds were summarized, a...To investigate allelopathy of plants in desert ecosystems, related research achievements obtained in recent years, reported allelopathic plants, allelochemicals and releasing ways of alleochemicalds were summarized, and then the key problems of research into allelopathic plants in desert ecosystems were indicated. It was considered that the research of allelopathy of plants in desert regions has just started in China, and plants with atlelopathic potential were found in the Compositae, Leguminosae, Rosaceae, Scrophulariaceae and Gramineae; plants in desert regions re- lease allelochemicals mainly via natural volatilization, which is closely related to their growing environment; allelochemicals such as alkaloids, fla- vonoids, terpenoids have been identified. This study can provide theoretical basis and practical value for reasonable adoption of protection meas- ures of desert plants and comprehensive control of desertification.展开更多
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
文摘Sandy desertification is land degradation characterized by wind erosionmainly resulted from the excessive human activities in arid, semiarid and part of sub-humid regionsin northern China, The research on sandy desertification has experienced more than 5 decades ofarduous course of the struggle along with the establishment and development of China's desertscience. Researches in this field have made a great contribution to the national economicconstruction, and environmental protection. This paper focuses on presenting the major progress andachievements in the sandy desertification research during the last 50 years, including the stages ofstudy on sandy desertification, background environment of sandy desertification and its changes,the conception, causes, process, monitoring and assessment of sandy desertification, the vegetationsuccession, landscape ecology, plant physiology, impacts on ecosystem, high-effective use of waterand land resources and sustainable development in sandy desertified regions, sandy desertificationcontrol models and techniques etc.
基金Supported by the National Natural Science Foundation of China(41161006,41161049,31100519,31460224,31460069)
文摘To investigate allelopathy of plants in desert ecosystems, related research achievements obtained in recent years, reported allelopathic plants, allelochemicals and releasing ways of alleochemicalds were summarized, and then the key problems of research into allelopathic plants in desert ecosystems were indicated. It was considered that the research of allelopathy of plants in desert regions has just started in China, and plants with atlelopathic potential were found in the Compositae, Leguminosae, Rosaceae, Scrophulariaceae and Gramineae; plants in desert regions re- lease allelochemicals mainly via natural volatilization, which is closely related to their growing environment; allelochemicals such as alkaloids, fla- vonoids, terpenoids have been identified. This study can provide theoretical basis and practical value for reasonable adoption of protection meas- ures of desert plants and comprehensive control of desertification.
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。
