为了全面地分析国外居民健康的邻里影响研究新进展,基于Cite Space可视化工具,分析Web of Science数据库中2002―2016年以来613篇主题为"居民健康的邻里影响"的文献,以揭示影响居民健康的重要环境因素,为中国健康城市规划提...为了全面地分析国外居民健康的邻里影响研究新进展,基于Cite Space可视化工具,分析Web of Science数据库中2002―2016年以来613篇主题为"居民健康的邻里影响"的文献,以揭示影响居民健康的重要环境因素,为中国健康城市规划提供依据。研究发现:1)近15年来国外居民健康的邻里影响研究关注度持续上升,研究主题集中,主要关注建成环境和社会环境2个方面;2)建成环境和社会环境一方面通过塑造居民交通出行方式、体育锻炼习惯、饮食习惯、生活态度以及心理状态等路径作用于居民健康,另一方面通过压力的累积、资源获取的受限等对健康产生影响;3)目前研究方法主要通过横向研究构建健康行为、相关疾病与环境要素之间的多元量化模型来实现,纵向研究较少。最后对中国居民健康的邻里影响研究提出3点建议。展开更多
Plants only interact with neighbors over restricted distances,so local conditions are of great significance for plants.In this study,a spatially-explicit,individual-based model was constructed to explore the effects o...Plants only interact with neighbors over restricted distances,so local conditions are of great significance for plants.In this study,a spatially-explicit,individual-based model was constructed to explore the effects of size variation and spatial structure on adaptive plasticity of plant height in response to light competition.In the model a plant maintains its height at an optimal value in order to maximize its growth rate,and this optimal height increases with the increase of the intensity of light competition experienced by the individual plant.When the spatial pattern of the population is non-uniform or there is size variation among individual plants,the height growth curves of individuals different from each other vary due to the differences in the local light environment,and there is also variation in the allocation of photosynthate to height growth among the individual plants.There is no ESS height or height growth strategy on which all plants will converge.Our results indicate that the plasticity of plants' height growth reactions to the light competition should be considered at the individual level and they argue strongly for the importance of the spatial pattern and neighborhood effects in generating the diversity of heights and height growth strategies in plant population.展开更多
文摘为了全面地分析国外居民健康的邻里影响研究新进展,基于Cite Space可视化工具,分析Web of Science数据库中2002―2016年以来613篇主题为"居民健康的邻里影响"的文献,以揭示影响居民健康的重要环境因素,为中国健康城市规划提供依据。研究发现:1)近15年来国外居民健康的邻里影响研究关注度持续上升,研究主题集中,主要关注建成环境和社会环境2个方面;2)建成环境和社会环境一方面通过塑造居民交通出行方式、体育锻炼习惯、饮食习惯、生活态度以及心理状态等路径作用于居民健康,另一方面通过压力的累积、资源获取的受限等对健康产生影响;3)目前研究方法主要通过横向研究构建健康行为、相关疾病与环境要素之间的多元量化模型来实现,纵向研究较少。最后对中国居民健康的邻里影响研究提出3点建议。
基金supported by the National Natural Science Foundation of China (Grant Nos. 40901019, 30770360 and 20776112)the Research Fund for the Doctoral Program of Higher Education of China (Grant Nos. 20070730047, 20070730051)+1 种基金China National Funds for Distinguished Young Scientists (Grant No. 30625008)the National Basic Research Program of China (Grant No. 2007CB108902)
文摘Plants only interact with neighbors over restricted distances,so local conditions are of great significance for plants.In this study,a spatially-explicit,individual-based model was constructed to explore the effects of size variation and spatial structure on adaptive plasticity of plant height in response to light competition.In the model a plant maintains its height at an optimal value in order to maximize its growth rate,and this optimal height increases with the increase of the intensity of light competition experienced by the individual plant.When the spatial pattern of the population is non-uniform or there is size variation among individual plants,the height growth curves of individuals different from each other vary due to the differences in the local light environment,and there is also variation in the allocation of photosynthate to height growth among the individual plants.There is no ESS height or height growth strategy on which all plants will converge.Our results indicate that the plasticity of plants' height growth reactions to the light competition should be considered at the individual level and they argue strongly for the importance of the spatial pattern and neighborhood effects in generating the diversity of heights and height growth strategies in plant population.
