毕业论文移动版

摘 要研究森林土壤养分以及进一步理解土壤肥力形成过程和土壤养分分布规律， 对森林土壤肥力状况的维持以及系统认识森林生态过程中植被和土壤的动态关 系具有重要意义。以庐山典型性森林土壤为研究对象，系统分析森林土壤 7 个养 分指标（有机质、全 N、全 P、全 K、水解 N、有效 P 和速效 K）的空间分布特 征，同时结合地上不同植被探讨土壤养分的空间分布与植被之间相互影响机制， 揭示森林生态系统土壤养分空间变异规律。结果表明：（1）落叶阔叶林下土壤 有机质、全量养分和速效养分中的水解 N、有效 P 的含量均为最高，速效 K 含 量最低。（2）常绿阔叶林下土壤有机质、全 N、水解 N、有效 P 平均含量最低， 全 K、速效 K 平均含量最高；（3）同一森林植被类型下土壤的上层土壤养分指 标含量均高于下层土壤的养分指标含量，其中土壤有机质、水解 N、有效 P 及速 效 K 的含量随土层深度增加明显的降低；（4）常绿阔叶林下土壤全 K 和速效 K 含量在各土层上均为最高，落叶阔叶林下土壤全 K 和速效 K 含量在各土层最低。

该论文有图 10 幅，表 2 个，参考文献 20 篇。69077

关键词：森林植被类型 土壤养分 空间分布 庐山

Research on spatial distribution characteristics of soil nutrients under different forest vegetation types in Lu Shan

Abstract

Study on forest soil nutrient and further understanding formation process and distribution patterns of soil nutrients of soil fertility, on Forest Soil Fertility Maintenance and system understanding the dynamic relationship between vegetation and soil in the forest ecosystem process is of great significance. To Lushan typical forest soil as the research object, system analysis forest soil 7 nutrient (organic matter, total nitrogen, total phosphorus, total potassium, hydrolysable nitrogen, available phosphorus and available potassium) space distribution characteristics, combined with more different vegetation to explore the interaction mechanism between Soil Nutrient Spatial Distribution and vegetation, reveal Soil Nutrient Spatial variability of forest ecological system. The results showed that: (1) the content of organic matter, total nutrient and available phosphorus in the soil of the deciduous broad leaved forest was the highest, and the available potassium content was the lowest. (2) in evergreen broad-leaved forest soil organic matter, total nitrogen, hydrolyzable nitrogen, effective phosphorus content in average was lowest total potassium, available  potassium average content is the highest; (3) under the same forest vegetation types in the upper soil layer soil nutrient content were higher than the lower layers of the soil nutrient content, the soil organic matter, hydrolytic nitrogen, available phosphorus and available potassium content with soil depth increase significantly reduced; (4) in evergreen broad-leaved forest soil total potassium and available potassium content in each soil layer were the highest, deciduous broad leaved forest  soil  total potassium and available potassium content in the soil the lowest.

Key words： Vegetation types Soil nutrient Space distribution LuShan

目录

摘 要 I

Abstract II

目 录 III

图清单 IV

表清单 IV