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庐山不同林地土壤有机碳库的变化特征研究

时间:2019-08-09 13:11来源:毕业论文
选择庐山8种典型植被类型:常绿-落叶阔叶林、灌丛、落叶阔叶林、常绿阔叶林、针阔混交林、马尾松林、玉山竹林、黄山松林,研究8种不同林地类型下有机碳含量、土壤有机碳密度、

摘  要:选择庐山8种典型植被类型:常绿-落叶阔叶林、灌丛、落叶阔叶林、常绿阔叶林、针阔混交林、马尾松林、玉山竹林、黄山松林,研究8种不同林地类型下有机碳含量、土壤有机碳密度、土壤活性有机碳和活性有机碳各组分之间的相关。研究表明:(1)8种不同林地下土壤有机碳含量大小顺序为:常绿—落叶阔叶林>落叶阔叶林>灌丛>针阔混交林>常绿阔叶林>玉山竹林>黄山松林>马尾松林。(2)由于土地利用变化和对土壤的人为扰动以及土壤容重的差异的原因,不同林地土壤有机碳密度差异也较明显。不同林地土壤有机碳密度大小次序为玉山竹林>常绿—落叶阔叶林>常绿阔叶林>针阔混交林>灌丛>落叶阔叶林>马尾松林>黄山松林。(3)常绿—落叶阔叶林下WSOC含量最高,马尾松林含量最低,8种不同林地下土壤EOC含量大小排序是常绿—落叶阔叶林>落叶阔叶林>常绿阔叶林>针阔混交林>灌丛>玉山竹林>黄山松林>马尾松林,8种林地类型下MBC含量最高的为常绿-落叶阔叶林,含量最低的为马尾松林。(4)在相关性方面,黄山松林和马尾松林的各组分之间的相关性相较于其他林地类型较高。38370
毕业论文关键词:林地类型;土壤有机碳库;活性有机碳;庐山
Study of soil organic carbon in different forest vegetation in Lushan
Abstract:Choose the typical forest types in Lushan: evergreen and deciduous broad-leaved forest, deciduous broad-leaved forest, evergreen broad-leaved forest, coniferous forest, masson pine,  yushan forest, mount huangshan pine forest, shrub and other 8 kinds of different forest types. Study the 8 kinds of different forest types of soil organic carbon content, soil organic carbon density, soil active organic carbon and the correlation between organic carbon fractions. Research shows that:(1)8 kinds of organic carbon content in different forest soil underground in order:evergreen and deciduous broad-leaved forest>deciduous broad-leaved forest>shrub> evergreen broad-leaved forest>coniferous forest>evergreen broad-leaved forest>yushan forest>mount huangshan pine forest>masson pine. Especially the evergreen broad-leaved forest is significantly higher than that of masson Pine. (2)Because of the change of land use and soil disturbance and soil bulk density difference, the differences of soil organic carbon density is significantly different. The order of the 8 kinds of different forest types’ organic carbon density is: yushan forest>evergreen and deciduous broad-leaved forest>evergreen broad-leaved forest>coniferous forest>deciduous broad-leaved forest>shrub> masson pine>mount huangshan pine forest.(3)The highest  of the WSOC content in the 8 kinds of different forest types is evergreen and deciduous broad-leaved forest,the samllest is masson pine, the order of the EOC content is: evergreen and deciduous broad-leaved forest>evergreenbroadleavedforest>shrub>deciduous-broad-leaved-forest> coniferousfores t> 源-自*六'维:论.文]网[www.lwfree.cn
yushan forest>mount huangshan pine forest>masson pine.The highest of MBC is evergreen and deciduous broad-leaved forest,the smallest is masson pine.(4)In terms of relevance,the correlation between soil active carbon in mount huangshan pine forest and masson pine forests compared to other forest types is higher.
Key words: Forest vegetation types; Soil organic carbon; Soil active organic carbon; Lushan
 目录   
1  绪论    1
1.1 目的意义    1
1.2 国内外的研究进展    1
1.3 技术路线    2
2  研究区与研究方法    2
2.1 研究区域概况    2
2.2 设置样地与研究方法    3 庐山不同林地土壤有机碳库的变化特征研究:http://www.lwfree.cn/shengwu/20190809/37334.html
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