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常住人口家庭规模与年龄结构对城市居民用电的影响 被引量:4
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作者 胡振 龚薛 《环境污染与防治》 CAS CSCD 北大核心 2020年第10期1252-1258,共7页
基于2016年“中国家庭追踪调查”(CFPS)数据,运用可拓展的随机性环境影响评估(STIRPAT)模型分析常住人口家庭规模与年龄结构对城市家庭用电的影响。结果表明,城市居民用电具有显著的家庭规模经济效应,家庭中增加一名成员将使家庭人均用... 基于2016年“中国家庭追踪调查”(CFPS)数据,运用可拓展的随机性环境影响评估(STIRPAT)模型分析常住人口家庭规模与年龄结构对城市家庭用电的影响。结果表明,城市居民用电具有显著的家庭规模经济效应,家庭中增加一名成员将使家庭人均用电降低10%~20%,这在一定程度上抵消了居民家庭电力消费对环境的不利影响。不同年龄常住人口对居民用电的家庭规模经济效应具有不同的贡献,其中儿童>少年>中年>老年>青年。家庭人均用电受家庭人均支出和制冷度日数的影响,且存在显著的地域差异。政府在实际调控过程中应制定一种同时考虑到家庭异质性和居民用电消费习惯的综合措施来控制城市居民用电。 展开更多
关键词 家庭电力消费 年龄结构 家庭规模经济 可拓展的随机性环境影响评估模型
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Runner Bean (Phaseolus coccineus L.) Production in Chile
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作者 J. Tay A. Pedreros and A. France 《Journal of Agricultural Science and Technology(B)》 2011年第3期360-362,共3页
Runner bean is usually grown in Chile as household plantings, in small surfaces with trellis support. Several studies were made to grow runner beans extensively without trellis support, like common beans are grown. Th... Runner bean is usually grown in Chile as household plantings, in small surfaces with trellis support. Several studies were made to grow runner beans extensively without trellis support, like common beans are grown. Three runner bean ecotypes were evaluated, with and without trellis support. Although the highest yield was obtained with trellis support, significant yields were obtained without trellis. Thus, this specie can be established without support like the common bean, allowing a great economic advantage especially at large scale plantings. The ecotype named "Quilapallar" was selected by its white and large grains and excellent cooking quality. Then, seed rates and dry grain yield were compared with commercial varieties of common bean. There was not statistical difference in yield among row distances, except when this was 25 cm apart. Besides, there was not statistical difference among Quilapallar and Torcaza INIA, although the later is a common bean variety with a high yield potential. 展开更多
关键词 Runner bean Phaseolus coccineus common bean agronomic trials.
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