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[1]XU Hong-liang,MAN Xiu-ling,SHENG Hou-cai.Water Conservation Function of Different Types of Larix gmelini Forests in Da Hinggan Mountains[J].Research of Soil and Water Conservation,2011,18(04):92-96.

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Water Conservation Function of Different Types of Larix gmelini Forests in Da Hinggan Mountains

Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume: 18 Number of periods: 2011 04 Page number: 92-96 Column: Public date: 2011-08-20

Title:: Water Conservation Function of Different Types of Larix gmelini Forests in Da Hinggan Mountains

Author(s):: XU Hong-liang^1,2, MAN Xiu-ling¹, SHENG Hou-cai¹; 1. School of Forestry Northeast Forestry University, Harbin 150040, China;
2. Soil and Water Conservation Research Institute of Heilongjiang Province, Binxian, Heilongjiang 150400, China

Keywords:: forest type; soil porosity; litter; water conservation

CLC:: S715

DOI:: -

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).

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