文献类型：期刊文献

中文题名：高寒沙区人工柠条林对土壤养分影响的时效性

英文题名：Effect of Caragana korshinskii Plantation on Soil Properties in Alpine Sandy Land

作者：李少华[1] 王学全[1] 包岩峰[1]

第一作者：李少华

机构：[1]中国林业科学研究院荒漠化研究所

年份：2015

卷号：43

期号：11

起止页码：70-74

中文期刊名：东北林业大学学报

外文期刊名：Journal of Northeast Forestry University

收录：CSTPCD;;北大核心:【北大核心2014】；CSCD:【CSCD_E2015_2016】；

基金：国家"十二五"科技支撑课题(2012BAD16B0105)

语种：中文

中文关键词：高寒沙区;柠条;土壤改良

外文关键词：Alpine sandy land; Caragana korshinskii; Soil improvement;

分类号：S156

摘要：以高寒沙区不同林龄（3、12、21、30、42、51 a）的人工柠条林地土壤为研究对象,将农田土壤及沙地土壤作为对照,测定并比较了常规土壤质量指标的变化情况。结果表明：（1）随着柠条林龄的增加,土壤质地得到显著改善,全N、全P、全K、速效N、速效P、速效K及有机质等养分的质量分数显著增加（P〈0.05）;（2）0-5 cm层土壤养分质量分数增加最快,随深度增加各土层改良效果存在时间上的滞后性,土壤养分呈现表聚性是沙地土壤正向演替的标志,并不是从造林初期就显现;（3）与农田土壤0-5 cm层理化性状相比,30年生的柠条林地土壤已恢复至良好水平,可以进行适度开发利用。
The experiment was conducted to study the soil on alpine sandy land in artificial Caragana korshinskii plantation of different ages（ 3,12,21,30,42 and 51 years） with the farmland and sandy soil as control. Through determination and comparison of the changes by the regular soil quality indicators,the sandy soil improvement effect and the time of recovering alpine sand and the potential for development or utilization of Caragana were discussed in this region. With the increase of Caragana korshinskii plantation age,the soil texture was significantly improved,the content of total N,P,K and available N,P,K,and soil organic matter were significantly increased（ P〈0.05）. The soil nutrient content in the 0-5 cm layer increased significantly,there was a time lag in the soil improvement effect with the increasing of depth,soil nutrients showed that surface accumulation was a symbol of sandy soil positive succession,but not obvious from the early afforestation. Compared with the physical and chemical properties of farmland in 0-5 cm,30-year Caragana soil restored to a good level and could be moderately exploited.