论文热带海岸典型森林类型土壤有机碳储量和碳氮垂直分布特征是关于对不知道怎么写有机碳论文范文课题研究的大学硕士、相关本科毕业论文有机碳的测定论文开题报告范文和文献综述及职称论文的作为参考文献资料下载。
摘 要 热带海岸森林是重要的碳库,很容易受到人类活动的干扰,包括森林砍伐和气候变化.因此,迫切需要探明森林土壤有机碳储量,为热带海岸森林的保护和恢复提供理论依据.以热带海岸4种典型森林类型为研究对象,研究土壤中有机碳和全氮垂直分布特征及其和其他土壤理化性状关系.结果表明：不同林型土壤有機碳和全氮在土壤剖面中的垂直变化规律一致,表层含量较高,随着剖面深度增加含量逐渐降低,且不同土壤层次间呈现显著性差异.不同森林类型土壤有机碳和全氮含量平均值分别为1.35～7.06、0.08～0.61 g/kg,其中椰子人工林的土壤有机碳和全氮含量平均值最高,分别为7.06、0.61 g/kg,其次是香蒲桃天然次生林（6.07、0.44 g/kg）.各森林类型土壤碳氮比平均值依次为大叶相思人工林﹥木麻黄人工林﹥香蒲桃天然次生林﹥椰子人工林.各森林类型0～100 cm土层土壤有机碳储量从大到小依次为椰子人工林、香蒲桃天然次生林、大叶相思人工林和木麻黄人工林.相关分析结果表明,各个森林类型土壤有机碳和土壤容重呈显著负相关,和全氮呈显著正相关.说明椰子人工林和香蒲桃天然次生林森林生态系统达到平衡稳定状态,其碳汇效益较木麻黄人工林和大叶相思人工林显著,对热带海岸森林生态系统健康的经营和维护具有重要意义.
关键词 热带海岸；土壤碳储量；土壤碳氮比；垂直分布
中图分类号 Q948.113 文献标识码 A
Soil Organic Carbon Storage and Vertical Distribution of
Carbon and Nitrogen Under Different Typical Forest
Types in the Coastal Tropical Area
CHEN Xiaohua1, YANG Qingqing2, YU Xuebiao3 *, CHEN Zongzhu1 *,
YANG Qi1, LEI Jinrui1
1 Hainan Provincial Forestry Science Research Institute, Haikou, Hainan 571100, China
2 Institute of Environment and Plant Protection, Chinese Academy of Tropical Agricultural Sciences, Haikou, Hainan 571101, China
3 College of Environment and Plant Protection, Hainan University, Haikou, Hainan 570228, China
Abstract Tropical coastal forests are an important carbon pool and are easily disturbed by human activities, including deforestation and climate change. Therefore, it is urgent to explore the organic carbon storage of forest soil, which provides a theoretical basis for the protection and restoration of tropical coastal forests. We estimated the soil organic carbon（SOC）storage and its vertical distribution under typical forest types, including secondary natural forest of S. odoratum, Coconut plantation, Acacia plantation, Casuarina plantation in the coastal tropical zone. The results showed the vertical variation of soil organic carbon and total nitrogen in the soil profile was consistent with the vertical variation of soil organic carbon and total nitrogen, the content of SOC and total nitrogen（TN）decreased with increasing soil depth on all of the four soil profiles, and the content of SOC and TN showed significant differences among layers. The content of SOC and TN in Coconut plantation was the highest among the four forest types（7.06 g/kg and 0.61 g/kg, respectively）, followed by the natural secondary forest of S. odoratum（6.07 g/kg and 0.44 g/kg）. The mean C/N was in the descending order of Acacia plantation（19.7）, Casuarina plantation（19.3）, secondary natural forest of S. odoratum（14.8）, and Coconut plantation（11.5）. The content of SOC and TN in the four forest soils ranged from 1.35 to 7.06 g/kg and from 0.08 to 0.61 g/kg. The descending order of SOC storage of 0-100 cm soil layer was Coconut plantation（48.09 t/hm2）, secondary natural forest of S. odoratum（41.98 t/hm2）, Acacia plantation（14.28 t/hm2）, and Casuarina plantation（12.06 t/hm2）. Correlation analysis showed significantly negative correlations between SOC and soil bulk density, and positive correlation between TN, but no significant correlations between soil water content. Coconut plantation and secondary natural forest of S. odoratum were the ecosystem equilibrium, and the carbon sequestration benefits than Casuarina plantation and Acacia plantation significantly. Our research has important significance for the management and maintenance of the tropical coastal forest.
总结:本论文主要论述了有机碳论文范文相关的参考文献,对您的论文写作有参考作用。
参考文献：
1、 高产农田土壤有机碳含量时空差异 摘要：以松辽平原玉米带的农田土壤为研究对象，在田间调查采样的基础上，研究高产田与低产田土壤有机碳含量的时空差异。结果表明：在玉米收获后，高产玉米。
2、 强化还原处理对热带地区土壤碳氮含量团聚体影响 摘要 为快速培肥热带地区土壤地力，设计4个处理：对照、淹水处理、淹水+覆膜处理、淹水+覆膜+紫花苜蓿处理（强化还原处理），研究淹水或添加有机物料。
3、 近20年海南岛土壤有机碳时空变异 摘 要 为探明海南土壤有机碳变化规律，以海南岛表层土壤有机碳为研究对象，在收集调查相关历史资料的基础上，采集土壤样品并测定其土壤有机碳含量，利用。
4、 基于决策树分类济宁市土壤有机碳遥感反演 摘要：本研究利用Landsat 8遥感影像数据以及土壤有机碳实测数据，以研究区表层0～20 cm土壤的有机碳含量为研究对象，通过SPSS的多元线。
5、 晋北典型沟壑区耕地土壤养分调查 摘 要：晋北典型沟壑区是水、陆面环境过程耦合与人为活动聚集的典型多元生态交错带。以晋北南洋河典型沟壑区耕地为案例，通过实地采样与化验分析，运用经。
6、 典型福利类型下居家养老服务国际比较 摘要：居家养老服务受到福利类型的影响。根据哥斯塔·埃斯平-安德森对于福利国家类型的划分，文章以美国、德国、瑞典、英国和日本为例，比较不同福利类型。