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基于D-S证据理论的诗歌综合评价:以唐代鄱阳湖景观诗歌为例
作者: 涂青 章年卿  来源:城市建设理论研究 年份:2013 文献类型 :期刊
描述:。我们应用D-S证据理论和模糊综合评判,提出了一种基于证据理论的诗歌综合评价方法。通过模糊综合评判,将评价中的定性指标定量化,建立基本信任分配函数;然后应用证据理论将信息进行融合,通过构建测评函数,给出最终的无纲量化结果,以衡量诗歌的价值高低。
全文:。我们应用D-S证据理论和模糊综合评判,提出了一种基于证据理论的诗歌综合评价方法。通过模糊综合评判,将评价中的定性指标定量化,建立基本信任分配函数;然后应用证据理论将信息进行融合,通过构建测评函数,给出最终的无纲量化结果,以衡量诗歌的价值高低。
鄱阳湖藻类群落结构及其与水文条件关系研究
作者: 吴召仕  来源:中国科学院大学 年份:2014 文献类型 :学位论文
描述:鄱阳湖藻类群落结构及其与水文条件关系研究
鄱阳湖藻类群落结构及其与水文条件关系研究
作者: 吴召仕  来源:中国科学院大学 年份:2014 文献类型 :学位论文
描述:鄱阳湖藻类群落结构及其与水文条件关系研究
鄱阳湖藻类群落结构及其与水文条件关系研究
作者: 吴召仕  来源:中国科学院大学 年份:2014 文献类型 :学位论文
描述:鄱阳湖藻类群落结构及其与水文条件关系研究
模拟研究变化水位和流速条件下鄱阳湖磷释放特征
作者: 童亚莉 梁涛 王凌青 李可欣  来源:Journal of Geographical Sciences 年份:2017 文献类型 :期刊
描述:Since the construction of the Three Gorges Dam,the Poyang Lake hydrological characteristics obviously changed.During the impoundment period of the Three Gorges Reservoir,the hydrodynamic factors of Poyang Lake varied.Water level dropped,the velocity decreased and water exchange time lengthened,which changed the release of phosphorous from sediments.In order to investigate how the hydrodynamic factors influence the release of phosphorous from sediments,we used a two-way annular flume device to simulate the release characteristics of phosphorous from sediments under variable water levels and velocities.We found that both water level rising and velocity increasing could enhance the disturbance intensity to sediments,which caused the increase of suspended solids(SS)concentration,total phosphorus(TP)concentration in the overlying water,and the ability that phosphorus released to overlying water from sediments enhanced as well:when overlying water velocity maintained 0.3 m/s,SS concentration increased to 4035.85 mg/L at the water level25 cm which was about 25 times compared to the minimum value and TP concentration in the overlying water also reached the maximum value at the water level 25 cm which was 1.2times that of the value at 10 cm;when water level maintained 15 cm,SS concentration increased to 4363.35 mg/L at the velocity of 0.5 m/s which was about 28 times compared to the value of 0 m/s,and TP concentration in the overlying water increased from 0.11 mg/L to 0.44mg/L.When the water level maintained 15 cm,the phosphorous release rate reached the maximum value of 4.86 mg/(md)at 0.4 m/s.The concentration of total dissolved phosphorous(TDP)and soluble reactive phosphate(SRP)both in overlying water and sediment-water interface were negatively correlated with p H.Using the parabolic equation,the optimum water level at a velocity of 0.3 m/s was calculated to be 0.57 cm,and the optimum velocity at water level of 15 cm was found to be 0.2 m/s.
全文:Since the construction of the Three Gorges Dam,the Poyang Lake hydrological characteristics obviously changed.During the impoundment period of the Three Gorges Reservoir,the hydrodynamic factors of Poyang Lake varied.Water level dropped,the velocity decreased and water exchange time lengthened,which changed the release of phosphorous from sediments.In order to investigate how the hydrodynamic factors influence the release of phosphorous from sediments,we used a two-way annular flume device to simulate the release characteristics of phosphorous from sediments under variable water levels and velocities.We found that both water level rising and velocity increasing could enhance the disturbance intensity to sediments,which caused the increase of suspended solids(SS)concentration,total phosphorus(TP)concentration in the overlying water,and the ability that phosphorus released to overlying water from sediments enhanced as well:when overlying water velocity maintained 0.3 m/s,SS concentration increased to 4035.85 mg/L at the water level25 cm which was about 25 times compared to the minimum value and TP concentration in the overlying water also reached the maximum value at the water level 25 cm which was 1.2times that of the value at 10 cm;when water level maintained 15 cm,SS concentration increased to 4363.35 mg/L at the velocity of 0.5 m/s which was about 28 times compared to the value of 0 m/s,and TP concentration in the overlying water increased from 0.11 mg/L to 0.44mg/L.When the water level maintained 15 cm,the phosphorous release rate reached the maximum value of 4.86 mg/(md)at 0.4 m/s.The concentration of total dissolved phosphorous(TDP)and soluble reactive phosphate(SRP)both in overlying water and sediment-water interface were negatively correlated with p H.Using the parabolic equation,the optimum water level at a velocity of 0.3 m/s was calculated to be 0.57 cm,and the optimum velocity at water level of 15 cm was found to be 0.2 m/s.
水文变异条件下鄱阳湖流域生态流量研究
作者: 刘剑宇 张强 顾西辉  来源:生态学报 年份:2015 文献类型 :期刊 关键词: 生态流量  鄱阳湖流域  水文变异 
描述:。在此基础上,采用15种概率分布函数分别拟合五站各月变异前日流量序列,最终确定五站点各月最优分布函数及所对应的概率密度最大处的流量,即得河道内生态流量。研究表明:(1)抚河于1962年发生弱变异,赣江、修河
全文:。在此基础上,采用15种概率分布函数分别拟合五站各月变异前日流量序列,最终确定五站点各月最优分布函数及所对应的概率密度最大处的流量,即得河道内生态流量。研究表明:(1)抚河于1962年发生弱变异,赣江、修河
水文变异条件下鄱阳湖流域的生态流量
作者: 刘剑宇 张强 顾西辉  来源:生态学报 年份:2015 文献类型 :期刊 关键词: 生态流量  鄱阳湖流域  水文变异 
描述:。在此基础上,采用15种概率分布函数分别拟合5站各月变异前日流量序列,最终确定5站点各月最优分布函数及所对应的概率密度最大处的流量,即得河道内生态流量。研究表明:(1)抚河于1962年发生弱变异,赣江、修河
全文:。在此基础上,采用15种概率分布函数分别拟合5站各月变异前日流量序列,最终确定5站点各月最优分布函数及所对应的概率密度最大处的流量,即得河道内生态流量。研究表明:(1)抚河于1962年发生弱变异,赣江、修河
环鄱阳湖地区有条件率先发展
作者:暂无 来源:中国联合商报 年份:2010 文献类型 :期刊
描述:环鄱阳湖地区有条件率先发展
鄱阳湖生态经济区湿地固碳释氧和营养循环功能价值评估
作者: 李琪 罗群 刘平 刘良源  来源:江西科学 年份:2013 文献类型 :期刊 关键词: 固碳释氧  鄱阳湖  湿地  评估 
描述:湿地生态系统价值体现在其特定的生物、物理、化学作用与功能上,而这种价值又因其地理位置、大小、构成以及对当地人类经济社会发展的影响而不同。据《鄱阳湖生态经济区规划》(2008)和《江西省
全文:湿地生态系统价值体现在其特定的生物、物理、化学作用与功能上,而这种价值又因其地理位置、大小、构成以及对当地人类经济社会发展的影响而不同。据《鄱阳湖生态经济区规划》(2008)和《江西省
产业低碳化与鄱阳湖生态经济区的价值实现
作者: 陈文华 彭波  来源:理论导报 年份:2010 文献类型 :期刊 关键词: 低碳产业  鄱阳湖生态经济区  生态文明 
描述:的是,要在工业化、城市化、现代化进程中,通过鄱阳湖生态经济区探索全国经济增长方式转型的路径,通过产业低碳化和低碳经济模式的创新,创造一种知识体系和价值体系,通过科学发展观的国际化,形成生态文明的核心价值理念和政策体系,逐步在生态文明时代实现全面崛起,为人类的发展作出新的贡献。
全文:的是,要在工业化、城市化、现代化进程中,通过鄱阳湖生态经济区探索全国经济增长方式转型的路径,通过产业低碳化和低碳经济模式的创新,创造一种知识体系和价值体系,通过科学发展观的国际化,形成生态文明的核心价值理念和政策体系,逐步在生态文明时代实现全面崛起,为人类的发展作出新的贡献。
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