"全球多源对地观测数据集成研究"收集了1981年以来全球10多种卫星原始数据、6种卫星高级数据产品、气象生态台站网络和各种地面观测数据,并在此基础上对所收集的数据进行整理和格式转换,该题经统计、收集、整理和汇编总量近60..."全球多源对地观测数据集成研究"收集了1981年以来全球10多种卫星原始数据、6种卫星高级数据产品、气象生态台站网络和各种地面观测数据,并在此基础上对所收集的数据进行整理和格式转换,该题经统计、收集、整理和汇编总量近600TB的卫星遥感数据。采用时间序列方法,辅以时空先验知识和时空连续性,实现全球多年MODIS和AVHRR地表反射率数据云雪监测和时空滤波,生成多年时空连续的高质量地表反射率数据。针对全球陆表特征参量产品生产的原始数据、预处理数据、中间产品数据和产品数据,客观地进行数据的分级和编目,构建全球陆表特征参量数据集成平台,实现数据全生产链路有效性检测和数据完整性检测。建立陆表特征参量产品在线分发服务系统,并于2012年12月22日在地球观测组织(Group on Earth Observations,GEO)第9次全会上面向全球用户公开发布。同时通过北京师范大学全球变化与数据处理中心和美国马里兰大学的Global Land Cover Facility向全球用户提供免费的数据查询、检索和下载服务。展开更多
Integrated assessment models and coupled earth system models both have their limitations in understanding the interactions between human activity and the physical earth system. In this paper, a new human--earth system...Integrated assessment models and coupled earth system models both have their limitations in understanding the interactions between human activity and the physical earth system. In this paper, a new human--earth system model, BNU- HESM1.0, constructed by combining the economic and climate damage components of the Dynamic Integrated Model of Climate Change and Economy to the BNU-ESM model, is introduced. The ability of BNU-HESM1.0 in simulating the global CO2 concentration and surface temperature is also evaluated. We find that, compared to observation, BNU-HESM1.0 underestimates the global CO2 concentration and its rising trend during 1965-2005, due to the uncertainty in the economic components. However, the surface temperature simulated by BNU-HESM1.0 is much closer to observation, resulting from the overestimates of surface temperature by the original BNU-ESM model. The uncertainty of BNU-ESM falls within the range of present earth system uncertainty, so it is the economic and climate damage component of BNU-HESM 1.0 that needs to be improved through further study. However, the main purpose of this paper is to introduce a new approach to investigate the complex relationship between human activity and the earth system. It is hoped that it will inspire further ideas that prove valuable in guiding human activities appropriate for a sustainable future climate.展开更多
目的探讨高等职业院校学生(简称高职生)的学校归属感、积极心理品质、主观幸福感和网络成瘾之间的关系及其内在作用机制。方法采用学校归属感量表(psychological sense of school membership scale,PSSM)中文版、中国大学生积极心理品...目的探讨高等职业院校学生(简称高职生)的学校归属感、积极心理品质、主观幸福感和网络成瘾之间的关系及其内在作用机制。方法采用学校归属感量表(psychological sense of school membership scale,PSSM)中文版、中国大学生积极心理品质量表、幸福感指数量表和中文网络成瘾量表修订版(revised Chinese internet addiction scale,CIAS-R),对1494名高职生进行调查。结果学校归属感与积极心理品质和主观幸福感呈显著正相关,积极心理品质与主观幸福感呈显著正相关,网络成瘾与学校归属感、积极心理品质、主观幸福感呈显著负相关。学校归属感不仅能够直接影响网络成瘾,还能够通过积极心理品质、主观幸福感及积极心理品质主观幸福感这3条中介路径间接影响网络成瘾。积极心理品质和主观幸福感在高职生的学校归属感与网络成瘾间起显著的链式中介作用,总中介效应占总效应的42.78%。结论学校归属感既可以直接预测高职生的网络成瘾,也可以通过积极心理品质、主观幸福感及积极心理品质主观幸福感间接预测高职生网络成瘾。展开更多
文摘"全球多源对地观测数据集成研究"收集了1981年以来全球10多种卫星原始数据、6种卫星高级数据产品、气象生态台站网络和各种地面观测数据,并在此基础上对所收集的数据进行整理和格式转换,该题经统计、收集、整理和汇编总量近600TB的卫星遥感数据。采用时间序列方法,辅以时空先验知识和时空连续性,实现全球多年MODIS和AVHRR地表反射率数据云雪监测和时空滤波,生成多年时空连续的高质量地表反射率数据。针对全球陆表特征参量产品生产的原始数据、预处理数据、中间产品数据和产品数据,客观地进行数据的分级和编目,构建全球陆表特征参量数据集成平台,实现数据全生产链路有效性检测和数据完整性检测。建立陆表特征参量产品在线分发服务系统,并于2012年12月22日在地球观测组织(Group on Earth Observations,GEO)第9次全会上面向全球用户公开发布。同时通过北京师范大学全球变化与数据处理中心和美国马里兰大学的Global Land Cover Facility向全球用户提供免费的数据查询、检索和下载服务。
基金funded by the National Key Program for Global Change Research of China(Grant No.2010CB950504)the National Basic Research Program of China(973 Program)(Grant No. 2012CB95570001)the nationallevel major cultivation project of Guangdong Province entitled:"The construction and application of coupled earth system and social economic models"(Grant No.2014GKXM058)
文摘Integrated assessment models and coupled earth system models both have their limitations in understanding the interactions between human activity and the physical earth system. In this paper, a new human--earth system model, BNU- HESM1.0, constructed by combining the economic and climate damage components of the Dynamic Integrated Model of Climate Change and Economy to the BNU-ESM model, is introduced. The ability of BNU-HESM1.0 in simulating the global CO2 concentration and surface temperature is also evaluated. We find that, compared to observation, BNU-HESM1.0 underestimates the global CO2 concentration and its rising trend during 1965-2005, due to the uncertainty in the economic components. However, the surface temperature simulated by BNU-HESM1.0 is much closer to observation, resulting from the overestimates of surface temperature by the original BNU-ESM model. The uncertainty of BNU-ESM falls within the range of present earth system uncertainty, so it is the economic and climate damage component of BNU-HESM 1.0 that needs to be improved through further study. However, the main purpose of this paper is to introduce a new approach to investigate the complex relationship between human activity and the earth system. It is hoped that it will inspire further ideas that prove valuable in guiding human activities appropriate for a sustainable future climate.
文摘目的探讨高等职业院校学生(简称高职生)的学校归属感、积极心理品质、主观幸福感和网络成瘾之间的关系及其内在作用机制。方法采用学校归属感量表(psychological sense of school membership scale,PSSM)中文版、中国大学生积极心理品质量表、幸福感指数量表和中文网络成瘾量表修订版(revised Chinese internet addiction scale,CIAS-R),对1494名高职生进行调查。结果学校归属感与积极心理品质和主观幸福感呈显著正相关,积极心理品质与主观幸福感呈显著正相关,网络成瘾与学校归属感、积极心理品质、主观幸福感呈显著负相关。学校归属感不仅能够直接影响网络成瘾,还能够通过积极心理品质、主观幸福感及积极心理品质主观幸福感这3条中介路径间接影响网络成瘾。积极心理品质和主观幸福感在高职生的学校归属感与网络成瘾间起显著的链式中介作用,总中介效应占总效应的42.78%。结论学校归属感既可以直接预测高职生的网络成瘾,也可以通过积极心理品质、主观幸福感及积极心理品质主观幸福感间接预测高职生网络成瘾。
