HE Liping,LI Guixiang,MENG Guangtao,et al.Study on Soil Fertility of Different Forest Types in Gaoligong Mountains[J].Research of Soil and Water Conservation,2015,22(06):116-121.
高黎贡山不同森林类型土壤肥力状况研究
- Title:
- Study on Soil Fertility of Different Forest Types in Gaoligong Mountains
- 分类号:
- S714
- 摘要:
- 以高黎贡山7种不同森林类型（亚高山草甸、灌丛、铁杉林、中山湿性常绿阔叶林、季风常绿阔叶林、热带沟谷雨林、干热河谷）土壤为研究对象，通过对林地土壤不同层次pH、有机质及全氮、全磷、全钾及主要速效养分含量的测定，分析不同森林类型下土壤养分的差异状况。结果表明，除干热河谷土壤pH值呈碱性（平均为7.10），其余6个森林类型土壤pH值均介于4.09～5.26，呈酸性。且随深度增加，pH呈现出稍微增大的趋势（除干热河谷外），土壤有机质、全氮、全磷、速效氮、速效磷含量均呈下降趋势。研究区总体上呈现出土壤有机质、全氮、全磷和速效性养分含量较高、土壤肥力较好，但不同森林类型土壤的肥力特征以及同一森林类型不同层次土壤的肥力特征均存在着差异。通过主成分分析计算各森林类型综合得分并进行排序，土壤肥力状况结果表明：亚高山草甸 > 灌丛 > 中山湿性常绿阔叶林 > 铁杉林 > 季风常绿阔叶林 > 热带沟谷雨林 > 干热河谷。
- Abstract:
- Based on analysis of soil pH, the content of organic matter and main nutrients at the different levels of soil under seven different forest types (Subalpine meadow, Subalpine shrub, Hemlock forest, Mid-mountain moist evergreen broad-leaf forest, Monsoon evergreen broad-leaf forest, Tropical ravine rain forest, Dry-hot valley) in Gaoligong Mountains,we investigated the soil fertility of different forest types. The result showed that soil pH in dry-hot valley was alkaline (average of 7.10), the pH in remaining six forest soil types ranged from 4.09 to 5.26, and is acidic. The contents of soil organic matter, total N and P, available N and P tended to decrease with increase of soil depth. Soil organic matter, total nitrogen, total phosphorus and phosphorus contents in the Gaoligong mountain are higher, and soil fertility was better, but different of forest types of soil geochemical characteristics and the same forest types of different levels soil chemical characteristics were different. The soil fertility decreased in the order: Subalpine meadow > Subalpine shrub > Mid-mountain moist evergreen broad-leaf forest > Hemlock forest > Monsoon evergreen broad-leaf forest > Tropical ravine rain > Dry-hot valley.
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备注/Memo
收稿日期:2014-12-31;改回日期:2015-01-18。
基金项目:国家林业公益性行业科研专项“高黎贡山主要珍稀濒危树种近地保护技术研究”（201304306）
作者简介:和丽萍(1972-),女,云南丽江人,博士,副研究员,主要从事土壤学和山地灾害研究。E-mail:kmhlp@sina.com
通讯作者:李贵祥(1975-),男,云南禄丰人,副研究员,主要从事生态恢复和森林生态学研究。E-mail:lguxiang7558@126.com