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Water Quality of Aroeira River for Use in Irrigation of Vegetable Crops in the Northern Region of the State of Espirito Santo, Brazil 被引量:1
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作者 Joao Victor Martins Antunes Robson Bonomo +1 位作者 Maria da Penha Piccolo Ramos Marcelo Antonio Oliveira 《Journal of Agricultural Science and Technology(A)》 2014年第10期797-805,共9页
The aim of this study was to evaluate the physical, chemical and microbiological quality of the water of the Aroeira River in the city of Silo Mateus, northern region of Espirito Santo State, Brazil, from April 2012 t... The aim of this study was to evaluate the physical, chemical and microbiological quality of the water of the Aroeira River in the city of Silo Mateus, northern region of Espirito Santo State, Brazil, from April 2012 to March 2013, for use in irrigation of vegetable crops. Five points were selected along the river for analysis of pH, chloride (mg/L C1-), total hardness (mg/L CaCO3), dissolved oxygen (mg/L O2), ammoniacal nitrogen (mg/L N-NH3), total iron (mg/L Fe), phosphate/orthophosphate (mg/L PO43-), turbidity (NTU), acidity (mg/L CO2), temperature (℃), electrical conductivity (dS/m), as well as microbiological and parasitological analyses. Only point l, located upstream of the points of domestic sewage discharges, is the closest to be considered suitable for use in irrigation of vegetable crop, demonstrating the possible risks to the health of populations who use water with sewage discharges in urban communities for irrigation of vegetable crops. 展开更多
关键词 CONTAMINATION agriculture parasitic diseases COLIFORMS sewage.
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Correlation Between Economic Development Level and Landscape Pattern in Beijing Peri-urban Areas 被引量:2
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作者 Ji Xiaomei Chen Tian 《Chinese Journal of Population,Resources and Environment》 2010年第3期3-10,共8页
With the rapid changes of demographic and socio-economic structure, various ecological and environmental problems have emerged in peri-urban areas. Studies on the correlation between socio-economic development and eco... With the rapid changes of demographic and socio-economic structure, various ecological and environmental problems have emerged in peri-urban areas. Studies on the correlation between socio-economic development and eco-environmental preservation are inadequate. This paper analyzes the landscape pattern of peri-urban areas to address this issue. First, it studies the differentiation of economic development levels in Beijing peri-urban areas. Then, it explores the correlation between economic development level of each town and its landscape pattern using Pearson Correlation and grade difference indices. Furthermore, it summarizes the problems within current landscape pattern. Three conclusions are drawn from the analysis: (1) on the whole, the economic de- velopment level in Beijing peri-urban areas basically matches with landscape pattern; (2) landscape contagion degree decreases with the growth of economic development level in as much as 30% of Beijing peri-urban areas. This is an irrational phenomenon accord- ing to our judgment; (3) landscape fragmentation grades in more than half of the towns are higher than their economic development grades, suggesting that attention should be paid to excessive fragmentation of land use. 展开更多
关键词 CORRELATION economic development level landscape pattern peri-urban areas BEIJING
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小城的磋琴
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作者 巩凤涛 《中华文化画报》 2014年第3期102-105,共8页
山东青州的范公亭公园里,洋溪湖畔,青州花键、满族八角鼓、青州府泥塑、青州磋琴、撂棒槌等青州本地的多种非物质文化遗产项目,组成了一条展示通道,每个摊位面前都悬挂着项目名称以及它的介绍。由四位青州磋琴乐手组成的小型乐队,一把... 山东青州的范公亭公园里,洋溪湖畔,青州花键、满族八角鼓、青州府泥塑、青州磋琴、撂棒槌等青州本地的多种非物质文化遗产项目,组成了一条展示通道,每个摊位面前都悬挂着项目名称以及它的介绍。由四位青州磋琴乐手组成的小型乐队,一把二胡、三把磋琴,两位老者各持一种乐器。 展开更多
关键词 琴乐 花键 山东青州 中国音乐学院 物质文化遗产 北城社区 击弦 洋溪 中央音乐学院 音乐术语
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