排序方式: 共有4条查询结果,搜索用时 15 毫秒
1
1.
2.
Household CO_2 emissions were increasing due to rapid economic growth and different household lifestyle. We assessed per capita household CO_2 emissions(PHCEs) based on different household consuming demands(including clothing, food, residence, transportation and service) by using provincial capital city level survey data in China. The results showed that:(1) there was a declining trend moving from eastward to westward as well as moving from northward to southward in the distribution of PHCEs.(2) PHCEs from residence demand were the largest which accounted for 44% of the total.(3) Correlation analysis and spatial analysis(Spatial Lag Model(SLM) and Spatial Error Model(SEM)) were used to evaluate the complex determinants of PHCEs. Per capita income(PI) and household size(HS) were analyzed as the key influencing factors. We concluded that PHCEs would increase by 0.2951% and decrease by 0.5114% for every 1% increase in PI and HS, respectively. According to the results, policy-makers should consider household consuming demand, income disparity and household size on the variations of PHCEs. The urgency was to improve technology and change household consuming lifestyle to reduce PHCEs. 相似文献
4.
基于文献计量的生态化学计量学文献分析 总被引:1,自引:0,他引:1
生态化学计量学已经成为国内外生态学研究的热点问题。作为一门新兴学科,科技文献能够反映科学研究的发展动态和热点变化。以Web of Science 数据库为数据源,利用专业数据分析工具TDA(Thomson Data Analyzer)和Ucinet0工具,对所有年份生态化学计量学研究相关的论文进行计量挖掘分析。结果表明:2000年以来发文量呈现直线上升趋势,且发文量较多的期刊多集中在一区、二区期刊;研究涉及多个学科领域,主要集中在环境科学与生态学、海洋与淡水生物两个学科方向。美国、德国、中国、加拿大等国家在生态化学计量学开展的研究最多,美国的亚利桑那州立大学、中国的中科院是开展研究最多的机构。国际该领域的研究热点集中在不同营养级、植物不同部位(如叶片)之间的碳、氮、磷的计量关系以及植物个体生长发育、种群增长、群落生态和生态过程的联系,尤其是对森林、草地和湿地生态系统的植物、土壤的元素计量特征。 相似文献
1