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选取贵州喀斯特区草地生态条件下5个不同区域的石灰(岩)土为研究对象,根据相应的理化性质及发生特性,探讨了影响土壤发育的因素,确定了土壤的诊断层和诊断特性。其中,供试土壤的诊断层包括:暗沃表层、雏形层和粘化层等,诊断特性包括:热性土壤温度状况、常湿润土壤水分状况、均腐殖质特性、腐殖质特性、盐基饱和、碳酸盐岩岩性、铁质特性、石灰性等,并在此基础上对其进行了土壤系统分类,结果显示:5个供试土壤分别属于中国土壤系统分类中的普通黑色岩性均腐土、腐殖钙质常湿雏形土和腐殖钙质常湿淋溶土等亚类。
The limestone soil in five different areas under the grassland ecological conditions in Guizhou Karst area was selected as the research object. Based on the corresponding physicochemical properties and occurrence characteristics, the factors influencing the soil development were discussed, and the diagnostic layer and diagnostic characteristics of the soil were determined. Among them, the diagnostic layers of soil include dark walnut, embryonic and mucilage, etc. The diagnostic characteristics include: temperature of hot soil, soil moisture status, humus, humus, salinity, carbon The results show that the five tested soils belong to the common black lithologic alluvial soil in the Chinese taxonomic system, respectively , Humus calcareous often wet embryo soil and humus calcareous often wet leaching soil subclass.