四川盆地丘陵区农林复合系统林地土壤的稳渗速率  

Steady infiltration rates in soils of three forest types for an agroforestry system in the hilly region of Sichuan Basin

作　　者：骆宗诗[1] 章路[2] 向成华[1] 谢大军[1] 陈俊华[1] 罗晓华[1] 

机构地区：[1]四川省林业科学研究院,四川成都610081 [2]四川省林业调查规划院．四川成都610081

出　　处：《浙江林学院学报》2010年第2期233-238,共6页Journal of Zhejiang Forestry College

基　　金：“十一五”国家科技支撑计划项目(2006BAD03A0504)

摘　　要：运用Hood IL-2700自动采集土壤入渗仪测定了四川盆地丘陵区农林复合系统3种林地(柏木Cupressus funebris纯林、麻栎Quercus acutissima-柏木混交林和桤木Alnus cremastogyne-柏木混交林)土壤的稳渗速率。结果表明:同一林地的土壤稳渗速率随土层加深而下降;不同林地的各层土壤中,混交林土壤稳渗速率显著高于纯林(P<0.05),混交林之间差异不显著(P>0.05)。0～10cm土层稳渗速率的大小为:栎柏混交林(13.269mm·min-1)>桤柏混交林(10.438mm·min-1)>柏木纯林(4.513mm·min-1);10～20cm土层稳渗速率的大小为:栎柏混交林(4.338mm·min-1)>桤柏混交林(3.791mm·min-1)>柏木纯林(1.329mm·min-1);20～30cm土层稳渗速率的大小为:桤柏混交林(3.095mm·min-1)>栎柏混交林(2.653mm·min-1)>柏木纯林(1.965mm·min-1)。土壤物理性状、林分结构和林地凋落物与土壤稳渗速率存在密切关系,建议在四川盆地丘陵区农林复系统景观格局配置中,应积极营建混交林林带,以提高森林的水土保持功能。Using a Hood infihrometer IL-2700 （Germany, 2006）, the steady infiltration rate in three soil layers （0-10, 10-20, and 20-30 cm） of three forest types （a Cupressus funebris plantation, a mixed Quercus acutissima-C, funebris forest, and a mixed Alnus cremastogyne-C, funebris forest） from an agro- forestry system in the hilly region of the Siehuan Basin was measured. The relationship between soil features, forest structure, and steady soil infiltration rate was also discussed. Results showed that for a given forest type the steady infiltration rate of the soil decreased with soil layer depth. For different soil layers, the steady infiltration rates of the two mixed forests were significantly greater （P〈0.05） than the C. funebris plantation. The order of steady infiltration rates by soil depth was as follows： 1） for the 0-10 cm depth, mixed Q. acutissima-C, funebris forest （13.269 mm·min^-1） 〉mixed A. cremastogyne-C, funebris forest （10.438 mm·min^-1）〉C, funebris plantation（4.513 mm·min^-1）; 2） for 10 - 20 cm, mixed Q. acutissima-C. funebris forest （4.338 mm ·min^-1） 〉mixed A. cremastogyne-C, funebris forest （3.791 mm·min^-1） 〉C. funebris plantation （1.329 mm·min^-1）; and 3） for 20 - 30 cm, mixed A. cremastogyne-C, funebris forest （3.095 mm·min^-1） 〉mixed Q. aeutissima-C, funebris （1.965 mm·min^-1）. Thus, to enhance the water and forestry systems of the hilly regions of Sichuan Basin, forest （2.653 mm ·min^-1） 〉C. funebris plantation soil conservation capacity of forested land in agro- a mixed forest should be planted. [ Ch, 5 tab. 15 ref. ]

关 键 词：森林土壤学 土壤稳渗速率 土壤储水量 林地 

分 类 号：S714.2[农业科学—林学]