| 尕海湿地泥炭土土壤理化性质 |
| |
| 引用本文： | 王元峰,王辉,马维伟,王修华.尕海湿地泥炭土土壤理化性质[J].水土保持学报,2012,26(3):118-122. |
| |
| 作者姓名： | 王元峰 王辉 马维伟 王修华 |
| |
| 作者单位： | 1. 甘肃农业大学林学院,兰州,730070
2. 甘肃尕海则岔自然保护区管理局,甘肃碌曲,747200 |
| |
| 基金项目： | 甘肃省教育厅科研项目“尕海湿地生态退化机理研究”(2008-3-26) |
| |
| 摘 要： | 泥炭是一种宝贵的自然资源,同时也是重要的生态资源,尕海湿地的泥炭土在涵养水源、储存碳汇方面有着举足轻重的作用。研究采用野外调查与室内分析相结合的方法,对尕海湿地泥炭土土壤的理化性质进行测定。结果表明:尕海湿地泥炭土的平均含水量为122.29%,说明尕海湿地具有较强的蓄水功能;土壤容重平均值为0.478 6g/kg,土壤总孔隙度平均值为78.186%。随着土层加深,土壤容重呈现出增大趋势,而总孔隙度呈现出降低趋势。(2)尕海湿地泥炭土的有机质、全氮、全磷、全钾平均含量依次为302.04,10.37,0.81,13.93g/kg,空间变异程度均属中等水平。随着土层加深,土壤有机质、全氮、全磷平均含量均呈现出下降的趋势,而土壤全钾平均含量呈现出先降低后升高的趋势,说明不同深度土壤中生物量的积累对土壤养分含量有重要影响。
|
| 关 键 词： | 尕海湿地 泥炭土 土壤含水量 土壤养分 相关性 |
Physical and Chemical Properties of Peat Soil in Gahai Wetland |
| |
| WANG Yuan-feng,WANG Hui,MA Wei-wei,WANG Xiu-hua.Physical and Chemical Properties of Peat Soil in Gahai Wetland[J].Journal of Soil and Water Conservation,2012,26(3):118-122. |
| |
| Authors: | WANG Yuan-feng WANG Hui MA Wei-wei WANG Xiu-hua |
| |
| Institution: | 1.College of Forestry,Gansu Agricultural University,Lanzhou 730070; 2.Gahai Zecha National Nature Reserve Administration,Luqu,Gansu 747200) |
| |
| Abstract: | Peat is an important natural and ecological resource.As a special resource,people are paying more and more attention to its exploitation,utilization and protection,so ecological characteristics research of peat soil is very important to protection and management of peat soil.Spatial variability of soil moisture and nutrients of peat in Gahai wetland and their correlations were investigated and analyzed by field sampling method and lab measurement.The main research results were as following: The mean moisture content of peat soil was 122.29%.The mean bulk density of peat soil was 0.478 6 g/kg,respectively,that of the soil general porosity was 78.186%.With soil depth increased,the soil bulk density had the increasing tendency while general porosity had declining tendency.The mean soil organic matter,total nitrogen,total phosphorus,total potassium content of peat soil was 302.04,10.37,0.81,13.93 g/kg,respectively,and their degree of spatial variability was medium.With soil depth increased,the mean content of soil organic matter,total nitrogen and total phosphorus decreased gradually while that of total potassium firstly declined and then increased.The results show that the accumulation of biomass at different depths in soil have a major impact on soil nutrient content. |
| |
| Keywords: | Gahai wetland peat soil soil moisture soil nutrients correlation |
| 本文献已被 CNKI 万方数据 等数据库收录！ |
|
