文献类型：期刊文献

中文题名：毛乌素沙地固沙林土壤化学性质差异

英文题名：Soil Chemical Properties of Sand-fixing Forests in Maowusu Sandland

作者：王彦武[1,2] 廖超英[1] 孙长忠[3] 徐恒[1]

第一作者：王彦武

机构：[1]西北农林科技大学资源环境学院;[2]甘肃省水土保持科学研究所;[3]中国林业科学研究院华北林业实验中心

年份：2009

期号：4

起止页码：776-780

中文期刊名：土壤通报

外文期刊名：Chinese Journal of Soil Science

收录：CSTPCD;;北大核心:【北大核心2008】；CSCD:【CSCD2011_2012】；

基金：国家自然科学基金项目(40171061)资助

语种：中文

中文关键词：毛乌素沙地;固沙林;土壤化学性质

外文关键词：Maowusu Sandland; Sand-fixing forest; Soil chemical properties

分类号：S714.2;S288

摘要：在毛乌素沙地采用野外典型抽样调查和室内分析测定的方法,研究了不同的固沙林对土壤化学性质的影响。结果表明:在0～40cm土层,有机质和全氮表现为:花棒林>沙柳林>踏郎林>沙棘林>20年樟子松林>裸沙地;全磷、速效磷表现为:沙柳林>花棒林>踏郎林>沙棘林>20年樟子松林>裸沙地;速效钾表现为:花棒林>踏郎林>沙棘林>沙柳林>20年樟子松林>裸沙地;同一树种不同林龄固沙林,随着林龄的增大,土壤的有机质、全氮、速效氮、全磷、速效磷、全钾、速效钾含量都增大,pH值减小;在垂直剖面上,各固沙林地土壤的所有养分含量除速效氮及pH值外,其他均为表层高于下层;花棒林和沙柳林对土壤化学性质的作用显著。
With the method of representative investigation and laboratory analysis, the study on the effects of different sand-fixing forests on soil chemical properties in Maowusu Sandland was carried out. The results in 0-40cm soils layer were given as follows. Organic matter and total nitrogen of soil was： Hedysarum scoparium forest〉Salix psammophila forest〉Hedysarum mongolicum forest〉Hippophae rhamnoides forest〉20 years Pinus sylvestris var. mongolica forest〉Bare sand. Total phosphor and available phosphor of soil was： Salix psammophila forest〉Hedysarum scoparium forest〉Hedysarum mongolicum forest〉Hippophae rhamnoides forest〉20 years Pinus sylvestris var. mongolica forest〉Bare sand. Available potassium of soil was： Hedysarum scoparium forest〉Hedysarum mongolicum forest〉Hippophae rhamnoides forest〉Salix psammophila forest〉20 years Pinus sylvestris var. mongolica forest〉Bare sand. With the forest stand age increased, organic substance, total nitrogen, available nitrogen, total phosphor, available phosphor, total potassium and available potassium increased, while the pH decreased. In soil profile, the soil nutrients in top layer of sand-fixing forest were a little higher than in sub-top layer except available nitrogen and pH. The effects of Hedysarum scoparium forest and Salix psammophila forest on soil chemical properties are remarkable.