广东流溪河5种林分的枯落物与土壤持水性

Water-holding Capacity of Litter and Soil in Five Types of Forests in Liuxihe

文章以流溪河林场5种不同林分为研究对象,分析其枯落物和土壤持水特性。结果表明:(1)5种林分枯落物持水能力表现为:荔枝(Litchi chinensis)林>针阔混交林>杉木林>阔叶混交林>毛竹林;(2)5种林分0~60 cm土壤容重随土层深度增加而增大,60 cm土层平均容重大小依次为:毛竹林<针阔混交林<阔叶混交林<杉木林<荔枝林;(3)5种林分土壤总孔隙度平均大小依次为毛竹林>针阔混交林>阔叶混交林>杉木林>荔枝林;(4)5种林分土壤贮水量大小为毛竹林>针阔混交林>荔枝林>杉木林>阔叶混交林。总体而言,荔枝林枯落物持水性最好,毛竹林土壤持水性最强。

In this paper, fve types of forest stand in Liuxihe forest farm were selected as research objects to analyze the water-holding capacity of litter and soil. The results showed that （1） The water-holding capacity of litter showed as follows： Litchi forest 〉 coniferous-broadleaved mixed forest 〉 Chinese fir forest 〉 broad-leaved mixed forest 〉 Moso bamboo forest. （2） Soil bulk density in 0 ~ 60 cm depth of fve kinds of forest stand increased with the depth of soil layer increasing. The order in 60 cm was： Moso bamboo forest 〈 coniferous-broadleaved mixed forest 〈 broad-leaved mixed forest 〈 Chinese fr forest 〈 Litchi forest. （3） The order of the total soil porosity of fve stands was Moso bamboo forest 〉 coniferous-broadleaved mixed forest 〉 broad-leaved mixed forest 〉 Chinese fr forest 〉 Litchi forest. （4） The order of the soil water-holding capacity of fve stands was Moso bamboo forest 〉 coniferous-broadleaved mixed forest 〉 Litchi forest 〉 Chinese fr forest 〉 broad-leaved mixed forest. In general, the water-holding capacity of litter in Litchi forest was the best, and the water-holding capacity of Moso bamboo forest was the strongest.