安徽老山亚热带常绿阔叶林不同林龄阶段土壤特性及其水源涵养功能的变化  

Changes in Soil Properties and Water Conservation Function of Subtropical Evergreen Broad-Leaved Forest along a Chronosequence at Laoshan,Anhui

作　　者：徐小牛[1] 邓文鑫[1] 张赟齐[1] 王勤[1] 丁增发[1,2] 

机构地区：[1]安徽农业大学林学与园林学院,合肥230036 [2]安徽林业科学研究院,合肥230031

出　　处：《水土保持学报》2009年第1期177-181,共5页Journal of Soil and Water Conservation

基　　金：国家自然科学基金项目(No.30471386)

摘　　要：对安徽老山自然保护区亚热带常绿阔叶林不同林龄林分的土壤特性、凋落物持水量以及林地土壤蓄水性能等方面进行了研究。结果表明,不同林分的土壤性质及其水源涵养功能差异明显。在森林植被恢复过程中,随着林分生长,林地凋落物层逐渐发育,土壤性质得到明显改善,土壤水文功能逐渐提高。依据林地总蓄水量和有效蓄水量的大小,不同林分的水源涵养功能依次为:65年生(2415,645 t/hm2)>48年生(2407,634 t/hm2)>36年生(2273,562 t/hm2)>幼龄林(2079,462 t/hm2)。高龄林分土壤的水源效应显著高于幼龄林分。An investigation on soil properties, water-holding capacity of forest floor and soil in a subtropical evergreen broad-leaved forest across a chronosequence was conducted in Laoshan natural reserve, southern Anhui. Results from the study showed that there existed significant differences in soil properties and water conservation function among different stages of the forest. During the forest rehabilitation, the forest floor was developed, soil physical and chemical properties were improved, and their water conservation functions were enhanced gradually along with the stand development. Based on the total and effective water-holding capacity of forest floor and soil （0--40 cm）, the order of the water conservation function for the forest stands studied was： 65-year stand （2 415,645 t/hm^2） 〉 48-year stand （2 407,634 t/hm^2） 〉 36-year stand （2 273,562 t/hm^2） 〉 18-year stand （2 079,462 t/hm^2）, indicating that the hydrological effect of soil was greater significantly in the old stand than in the young stand.

关 键 词：常绿阔叶林 水源涵养 天然次生林 土壤性质 

分 类 号：S715.7[农业科学—林学] S714.7