CAJ | 학술논문

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。
이고한사구불동림령（3、12、21、30、42、51 a）적인공저조임지토양위연구대상，장농전토양급사지토양작위대조，측정병비교료상규토양질량지표적변화정황。결과표명：（1）수착저조림령적증가，토양질지득도현저개선，전N、전P、전K、속효N、속효P、속효K급유궤질등양분적질량분수현저증가（ P＜0．05）；（2）0～5 cm층토양양분질량분수증가최쾌，수심도증가각토층개량효과존재시간상적체후성，토양양분정현표취성시사지토양정향연체적표지，병불시종조림초기취현현；（3）여농전토양0～5 cm층이화성상상비，30년생적저조임지토양이회복지량호수평，가이진행괄도개발이용。
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 recove?ring alpine sand and the potential for development or utilization of Caragana were discussed in this region. With the in?crease 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 afforesta?tion. 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.