CAJ | 학술논문

为探明白云岩发育形成土壤团聚体机制，了解石漠化的发生情况，采用拆分方法对白云岩发育形成土壤的各级团聚体进行了测定。结果表明：白云岩发育形成土壤团聚体的机制为胶结剂先把小颗粒胶结成小团聚体，再由胶结剂进一步将小团聚体和细小的颗粒胶结形成更大的团聚体，而胶结剂中游离氧化铁铝是白云岩发育形成土壤团聚体最主要的作用力，尤其表现在＞5 mm 的团聚体颗粒上，可达89％的作用，而随着粒径的减小，其作用力减弱，但仍然达57．2％；随着粒径的减小，胶结剂胡敏酸的作用力逐渐增大，碳水化合物的作用变弱，大团聚体中有机胶结剂胡敏酸和碳水化合物的作用力近似；活性 Ca2＋、Mg2＋的作用不大。
위탐명백운암발육형성토양단취체궤제，료해석막화적발생정황，채용탁분방법대백운암발육형성토양적각급단취체진행료측정。결과표명：백운암발육형성토양단취체적궤제위효결제선파소과립효결성소단취체，재유효결제진일보장소단취체화세소적과립효결형성경대적단취체，이효결제중유리양화철려시백운암발육형성토양단취체최주요적작용력，우기표현재＞5 mm 적단취체과립상，가체89％적작용，이수착립경적감소，기작용력감약，단잉연체57．2％；수착립경적감소，효결제호민산적작용력축점증대，탄수화합물적작용변약，대단취체중유궤효결제호민산화탄수화합물적작용력근사；활성 Ca2＋、Mg2＋적작용불대。
The various aggregates of soil developed from dolomite were detected by split method to explore aggregate formation mechanism and the occurrence situation of stony desertification.The results showed that aggregate developed from small particle glued,then small aggregates combined small particles and small aggregates to become larger aggregates.The main glue was dissociated Fe2 O3 and Al2 O3 , especially larger than 5 mm aggregate which could contribute more than 89%,although as particle size changed from large to small the contribution of Fe2 O3 and Al2 O3 changed from 89% to 57.2%,the contribution was more than half.Particle size changed to become smaller,humic acid was of more contribution but active carbonhydrate was of less,and the same contribution was found at the largest aggregate.The contribution of active Ca2+ and Mg2+ was small.