摘要
为研究新疆地区草甸土形态的变异和成土特点,从新疆地区选取了10个代表性的草甸土剖面,详细分析了土壤剖面形态特征,包括土壤颗粒组成、质地、有机质含量、全氮含量、pH、电导率、碳酸钙和全盐含量等指标,又根据中国土壤系统分类进行检索,确定10个草甸土剖面的诊断层和诊断特性,并探讨了其在中国土壤系统分类中的归属问题。结果表明,新疆地区草甸土土壤颜色大部分较暗,有一定程度的有机质积累,但并不强烈,土壤风化程度较弱,草甸化过程明显;同时研究也表明,新疆地区草甸土在土层厚度、土体构型、质地、粉黏比、碳酸钙、新生体及诊断层、诊断特性等方面有较大的差异。根据中国土壤系统分类标准,10个供试土壤归属为3个土纲、4个亚纲、5个土类、7个亚类,在划分高级分类单元的基础上,又确定了基础分类单元,分为9个土族和10个土系。
In order to study the variation and soil formation characteristics of meadow soil properties in Xinjiang,ten representative meadow soil profiles are selected from Xinjiang,and the soil profile morphological characteristics are analyzed in detail,including soil particle composition,texture,organic matter content,total nitrogen contemt,pH,electrical conductivity,calcium carbonate and total salt contents.According to Chinese Soil Taxonomy,the diagnostic layers and diagnostic characteristics of the 10 meadow soil profiles are determined,and their attribution in Chinese Soil Taxonomy are discussed.The results show that the soil color of meadow soil in Xinjiang is mostly dark,and there is a certain degree of organic matter accumulation,but it is not strong,the weathering degree of soil is weak,and the process of meadowing is obvious.There are great differences in layer thickness,soil structure,texture,powder-to-viscosity ratio,calcium carbonate,neonatal body and diagnostic layer,and diagnostic characteristics.According to Chinese Soil Taxonomy,the 10test soils are classified into 3 order,4 suborder,5 groups,and 7 subgroups.Based on the division of advanced taxonomic units,the basic taxonomic unit is determined which is divided into 9 soil families and 10 soil series.
作者
郭梦
吴克宁
郝士横
武红旗
GUO Meng;WU Ke-ning;HAO Shi-heng;WU Hong-qi(School of Land Science and Technology,China University of Geoscience,Beijing 100083;Key Laboratory of Land Consolidation,Ministry of Natural Resources,Beijing 100035;College of Grassland and Environmental Sciences,Xinjiang Agricultural University,Urumqi Xinjiang 830052)
出处
《中国土壤与肥料》
CAS
CSCD
北大核心
2022年第2期54-64,共11页
Soil and Fertilizer Sciences in China
基金
国家科技基础性工作专项课题项目(2014FY110200A03)。
关键词
新疆
草甸土
诊断层和诊断特性
系统分类
发生分类
Xinjiang
meadow soil
diagnostic horizons and diagnostic characteristics
taxonomy
occurrence classification
