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Dynamics of pH value and metal elements of rainfall within mixed forests in Japanese pine and cypress

Dynamics of pH value and metal elements of rainfall within mixed forests in Japanese pine and cypress
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摘要 The dynamics of forest ecology was studied. The pH values, electrical conductivities and concentrations of metal and nonmetal elements in rainfall, stream, through fall and stream flow were investigated based on the data collected from a small mixed forest watershed of Pinus densifora sieb et Zucc, Pinus thunbergii Parh and Chamaecypari sobtusa sieb et Zucc ex Endl at Kiryu nature reserve and a small barren watershed at Jakujo nature reserve, Ootsu, Shiga, Japan. The results show that both the mixed forest ecosystems of pine and cypress and the soil draw from granite affect the pH values and metal elements of rainfall. And the contribution of the mixed forest is greater than that of the barren. Moreover, the amount of input of most elements is larger than that of output in the ecosystem, which shows the elemental accumulation in the related forest ecosystem. The dynamics of forest ecology was studied. The pH values, electrical conductivities and concentrations of metal and nonmetal elements in rainfall, stream, through fall and stream flow were investigated based on the data collected from a small mixed forest watershed of Pinus densifora sieb et Zucc, Pinus thunbergii Parh and Chamaecypari sobtusa sieb et Zucc ex Endl at Kiryu nature reserve and a small barren watershed at Jakujo nature reserve, Ootsu, Shiga, Japan. The results show that both the mixed forest ecosystems of pine and cypress and the soil draw from granite affect the pH values and metal elements of rainfall. And the contribution of the mixed forest is greater than that of the barren. Moreover, the amount of input of most elements is larger than that of output in the ecosystem, which shows the elemental accumulation in the related forest ecosystem.
作者 刘云国 曾光明 Y.Katayama K.Nishimura A.Nakanishi H.Okazaki T.Anzai 李欣 G.Iwazubo
机构地区 Department of Environmental Science & Engineering Department of Agriculture
出处 《中国有色金属学会会刊：英文版》 CSCD 2002年第3期549-554,共6页 Transactions of Nonferrous Metals Society of China
基金 Project (70 1710 5 5 5 0 1790 11)supportedbytheNationalNaturalScienceFoundationofChina projectsupportedbytheTeachingandResearchAwardProgramforOutstandingYoungTeachersinHigherEducationInstitutesin 2 0 0 0
关键词 金属元素 松树 柏树 混和林 降水 pH值 mixed forest small watershed small barren watershed pH value metal elements
分类号 X173 [环境科学与工程—环境科学]
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参考文献11

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中国有色金属学会会刊：英文版
2002年 第3期

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