论文部分内容阅读
都庞岭位于湖南省西南部。最高峰韮菜岭海拔2009.3米。属中亚热带季风气候,水热资源丰富,植被生长良好。土壤形成特点表现为较强的脱硅富铝化作用,B层粘土矿物以高岭为主,硅铝率较低,通常在2.5以下,少数土壤剖面可小于1。土壤有机质含量较高,垂直谱上部土壤淋溶作用较强。由于都庞岭山体高峻,土壤垂直分带性明显,自下而上,分布有山地红壤(海拔700米以下)、山地黄壤(700—1550米)、山地黄棕壤(1550—1950米)、山地灌丛草甸土(1950米以上)等。山地黄壤在垂直带谱中占有重要位置,其性态特征表明,黄壤并不是红壤发育的前期阶段,而有其自身的、独立的形成特点,在湿度大,风化物通透性好的条件下,对黄壤的形成发育更为有利。
Du Pang Ling is located in southwestern Hunan Province. Peak leek Ling elevation of 2009.3 meters. Is a subtropical monsoon climate, rich in water and heat resources, good vegetation growth. Soil formation is characterized by strong desilication and alumization. The clay in layer B is mainly kaolinite, with a relatively low Si / Al ratio, usually below 2.5, with a few soil profiles less than 1. Soil organic matter content is higher, soil topsoil verticality spectrum stronger. Due to the steepness of the Dopangling Mountains, the vertical zonation of the soil is obvious. From bottom to top, there are mountain red soil (below 700m above sea level), yellow mountain soil (700-1550m), yellow brown earth (1550-1950m) Mountain shrub meadow soil (1950 meters above) and so on. The yellow soil of the mountain area occupies an important position in the vertical band spectrum. The characteristics of the yellow soil indicate that the yellow soil is not the early stage of red soil development, but has its own and independent formation characteristics. Under the conditions of high humidity and weathering material permeability , The formation and development of yellow soil is more favorable.