摘要
为了解贵州典型喀斯特地区成土环境对土壤性质的影响及其土壤在中国土壤系统分类中的归属,本研究选择后寨河小流域9个典型土壤剖面,分析其剖面形态特征和土壤理化性质。结果表明,石灰岩风化物形成土壤的发育程度相对低于第四纪红色黏土,其土壤pH值、黏粒CEC、有机碳含量、盐基饱和度、粉黏比相对较高,而游离Fe_(2)O_(3)含量和黏化率则相对偏低。峰林盆地和峰林台地的土壤黏粒CEC、有机碳含量、盐基饱和度显著低于峰丛洼谷地,土壤Fe_(2)O_(3)含量则显著高于后者(P<0.05)。旱地土壤pH值较低,自然地土壤黏粒CEC、有机碳含量显著高于其他土地利用类型(P<0.05)。供试剖面在中国土壤系统分类中归属为雏形土、淋溶土、人为土、富铁土及均腐土5个土纲、5个亚纲、8个土类、8个亚类,进一步划分为9个土族和9个土系;与发生分类参比表明,两者并不是简单的一对一关系,相对于发生分类而言,定量化的系统分类能够更加准确地区分土壤类型。
In order to understand the influence of soil-forming environment in typical karst area of Guizhou on soil properties and classification in Chinese Soil Taxonomy,9 typical soil profiles in Houzhaihe small watershed were selected to analyze the profile morphological characteristics and soil physical and chemical properties.The results showed that the development degree of limestone weathered soil was relatively lower than that of Quaternary red clay,and its pH,clay CEC,organic carbon content,base saturation and silt-to-viscosity ratio were relatively higher,while free Fe_(2)O_(3)content and viscosity rate were relatively lower.The soil clay CEC,organic carbon content and base saturation in the peak-forest basin and peak-forest platform were significantly lower than those in the peak cluster depression,while the Fe_(2)O_(3)content was significantly higher(P<0.05).The soil pH value of dry land was lower,and the soil clay CEC and organic carbon content in natural land were significantly higher than those of the other utilization types(P<0.05).The tested profiles were classified into 5 orders including Cambosols,Argosols,Anthrosols,Ferrosols and Isohumosols,5 suborders,8 groups and 8 subgroups in the Chinese Soil Taxonomy,which were further divided into 9 soil families and 9 soil series.Compared with the soil genetic classification,they were not in a simple one-to-one relationship,and the quantitative systematic classification could more accurately distinguish the soil types.
作者
赵文轩
陆晓辉
刘玉晶
陈清霞
牟叶果
Zhao Wenxuan;Lu Xiaohui;Liu Yujing;Chen Qingxia;Mu Yeguo(College of Geographic and Environmental Sciences,Guizhou Normal University,Guiyang 550025,China;State Key Laboratory Incubation Base for Karst Mountain Ecology Environment of Guizhou Province,Guiyang 550001,China)
出处
《山东农业科学》
北大核心
2021年第6期48-57,共10页
Shandong Agricultural Sciences
基金
国家自然科学基金项目(41867001,41261058)
贵州师范大学学术新苗培养及创新探索专项(黔科合平台人才〔2018〕5769-23)
贵州师范大学博士科研项目(GZNUD〔2017〕7号)。
关键词
成土环境
诊断层
诊断特性
中国土壤系统分类
贵州后寨河小流域
Soil-forming environment
Diagnostic horizons
Diagnostic characteristics
Chinese Soil Taxonomy
Houzhaihe small watershed of Guizhou Province
作者简介
赵文轩(1996—),男,山东临沂人,硕士研究生,主要从事土壤发生与分类研究。E-mail:i1021649927@163.com;通信作者:陆晓辉(1977—),女,吉林双辽人,博士,教授,主要从事土壤地理学研究。E-mail:lu_xiaohui@126.com。
