水土保持研究2011，Vol.18Issue(4)：92-96,5.
大兴安岭不同类型落叶松天然林水源涵养功能研究
Water Conservation Function of Different Types of Larix gmelini Forests in Da Hinggan Mountains
摘要
Abstract
With the concerns of water conservation by forest,five major forest types of larch forests in Da Hinggan Mountains were selected to test their water-holding capacity.The results show as the follows：soil total porosity ranged from 55.58% to 77.45%;noncapillary porosity ranged from 9.86% to 16.57%;capillary porosity ranged from 41.93 % to 63.20%.The soil bulk density ranked from high to low was Betula platyphylla-Larix gmeliniPinus sylvestris var.mongolica-Larix gmeliniLarix gmeliniLedum palustre var.decunbens-Larix gmeliniRhododendron simsii-Larix gmelini.The saturation holding capacity of Rhododendron simsii-Larix gmelini was 1 548.91 t/hm2,1 140.82 t/hm2 in Betula platyphylla-Larix gmelini.The water-holding capaciey of litter was Rhododendron simsii-Larix gmelini（1 064.97 t/hm2）〉Larix gmelini（955.92 t/hm2）〉Pinus sylvestris var.mongolica-Larix gmelini（910.40 t/hm2）〉Ledum palustre var.decunbens-Larix gmelini（723.95 t/hm2）〉Betula platyphylla-Larix gmelini（672.48 t/hm2）〉.The order of the water conservation function was：Rhododendron simsii-Larix gmelini（1 815.12 t/hm2）〉Larix gmelini（1 640.00 t/hm2）〉Pinus sylvestris var.mongolica-Larix gmelini（1 557.01 t/hm2）〉Ledum palustre var.decunbens-Larix gmelini（1 468.54 t/hm2）〉Betula platyphylla-Larix gmelini（1 308.94 t/hm2）.关键词
林地类型/土壤孔隙度/枯落物/水源涵养Key words
forest type/soil porosity/litter/water conservation分类
农业科技引用本文复制引用
徐洪亮,满秀玲,盛后财..大兴安岭不同类型落叶松天然林水源涵养功能研究[J].水土保持研究,2011,18(4):92-96,5.基金项目
林业公益性项目 （）
