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基于CloudSat/CALIPSO数据的晋西北地区云宏观特征分析 被引量:1
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作者 郭俊杰 王江涛 +2 位作者 蒯亮 舒展 葛耀明 《信息技术与网络安全》 2021年第11期77-82,88,共7页
利用CloudSat/CALIPSO资料对晋西北地区云宏观特征进行了分析,结果表明:晋西北地区云发生概率的年平均值为58.1%,其中,春季云发生概率最高,夏季次之,秋、冬两季相对较低;资料区分的8类云中,除层云未在晋西北地区出现外,卷云、高层云、... 利用CloudSat/CALIPSO资料对晋西北地区云宏观特征进行了分析,结果表明:晋西北地区云发生概率的年平均值为58.1%,其中,春季云发生概率最高,夏季次之,秋、冬两季相对较低;资料区分的8类云中,除层云未在晋西北地区出现外,卷云、高层云、高积云、层积云、积云、雨层云以及深对流云共7类云均有出现,各类云的分布表现出显著的季节特征;全年云层分布以单层云系为主,多层云系占比较少,且各类云在单层云及多层云中出现的概率及其垂直分布特征存在较大差异。研究结果为晋西北地区的云形态及发展规律、局地气候研究以及数值模式模拟等提供了参考和依据。 展开更多
关键词 晋西北地区 云发生率 层数 类型 垂直分布
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Rural Poverty Patterns and Influencing Factors in Yunnan Province,China:Based on County Level Dataset 被引量:2
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作者 SHANG Xiaowen CHEN Yufu 《Journal of Resources and Ecology》 CSCD 2020年第4期366-377,共12页
The identification of poverty at the county level is the precondition for poverty alleviation by formulating accurate strategies that are targeted for a certain area.Yunnan Province has the largest number of poverty c... The identification of poverty at the county level is the precondition for poverty alleviation by formulating accurate strategies that are targeted for a certain area.Yunnan Province has the largest number of poverty counties in China.The vast number of people living under the poverty-line,and the deep degree of poverty across a wide distribution range,pose major challenges.Based on the rural poverty incidence data,this paper describes the rural poverty patterns in Yunnan Province in 2010 and 2015,and then it explores the main factors which influence the incidence and changes in rural poverty at the county level in Yunnan Province using a stepwise regression analysis method.This study found that the rural poverty in counties of Yunnan Province was deeply affected by natural conditions and the geographical environment.In 2010 and 2015,the rural poverty situation in the middle region of Yunnan Province was relatively light,while it was more serious in the northwest,northeast and south regions.The pattern of county poverty is in good agreement with the topography and landforms of Yunnan Province and the poverty-stricken areas.There are strong correlations between the incidence of rural poverty in Yunnan Province with both the annual per capita net income of rural residents and the degree of agricultural mechanization.These factors are related to the living standards and agricultural production necessary for the peasantry to sustain their livelihood.The change in the incidence of rural poverty at the county level in Yunnan Province from 2010 to 2015 is significantly correlated with changes in the value-added of the primary industries and the degree of agricultural mechanization.These correlations indicate that the development of primary industry plays a key role in the process of lifting rural residents in Yunnan Province out of poverty so they can achieve prosperity.Therefore,improving the annual per capita net income of rural residents and the degree of agricultural mechanization for rural areas in Yunnan Province are still the main points for focused efforts.In the current phase of poverty alleviation,Yunnan Province should emphasize increasing rural residents'income and agricultural production and management in order to formulate effective policies and measures for poverty alleviation. 展开更多
关键词 rural poverty poverty incidence stepwise regression analysis Yunnan Province
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