阿什河源头不同类型红松人工林枯落物及其土壤水文特性

发布时间：2018-04-17 11:59

本文选题：阿什河 + 红松人工林　；参考：《水土保持学报》2017年01期

【摘要】：采用实地调查与室内试验分析的方法,研究了松花江干流南岸支流阿什河源头4种类型红松人工林的枯落物及其土壤水文特性。结果表明:4种类型红松人工林枯落物总储量从大到小顺序为红松纯林(12.57t/hm~2)、水曲柳—红松林(9.96t/hm~2)、黄檗—红松林(8.27t/hm~2)和胡桃楸—红松林(6.35t/hm~2)。4种类型红松人工林枯落物最大持水率为391.87%~573.93%,降雨有效拦蓄率为262.71%~409.61%,大小排序均为胡桃楸—红松林、黄檗—红松林、水曲柳—红松林和红松纯林。各类型红松人工林枯落物持水量及持水率随浸水时间呈对数形式增长,吸水速率随浸水时间呈幂指数关系下降。在0—30cm土层,土壤平均容重以胡桃楸—红松林(0.99g/cm~3)最小,红松纯林(1.04g/cm~3)最大,土壤总孔隙度均值以胡桃楸—红松林(58.77%)最大,红松纯林(56.22%)最小;土壤非毛管孔隙度均值范围为2.96%~5.85%,从大到小依次为胡桃楸—红松林、水曲柳—红松林、红松纯林和黄檗—红松林;土壤最大持水量和有效持水量的均值以胡桃楸—红松林最大,分别为587.67,58.47t/hm~2;土壤初渗速率、稳渗速率和渗透系数的均值也以胡桃楸—红松林最大,分别为3.64,2.78,1.10mm/min。综合4种类型红松人工林枯落物层和土壤层的水文特性,林分保水蓄水能力以胡桃楸—红松林最强,红松纯林最弱。研究结果可为研究地区的水土保育提供论据。
[Abstract]:The litter and soil hydrological characteristics of four types of Pinus koraiensis plantation in the south bank of Songhua River were studied by field investigation and laboratory test.The results show that the total litter reserves of 4 types of Pinus koraiensis plantation are in order from large to small: Pinus koraiensis 12.57t / hm ~ (-2), Fraxinus mandshurichi-Korean pine forest 9.96t / hm ~ (2), berbery-Korean pine forest 8.27t / hmm-2) and walnut Jugland-Pinus koraiensis 6.35t / hmm2.4 the largest water holding capacity of litter in Pinus koraiensis plantation.The rate was 391.87 and 573.93, and the effective rainfall storage rate was 262.71 and 409.61. The order of size was Juglans mandshurica and Korean pine forest.Berberine-Pinus koraiensis, Fraxinus mandshurica-Pinus koraiensis and Pinus koraiensis.The litter capacity and water holdup of different types of Pinus koraiensis plantation increased logarithmic with the soaking time, and the water absorption rate decreased exponentially with the soaking time.In 0-30cm soil layer, the average bulk density of soil was the smallest in Juglan-Korean pine forest (0.99g / cm ~ (3)), the largest in pure Korean pine forest (1.04g / cm ~ (3)), the maximum in total soil porosity (58.77g) and the lowest in pure Pinus koraiensis forest (56.22g).The mean range of soil non-capillary porosity was 2.96 and 5.85, and the order from large to small was Juglans mandshurica, Fraxinus mandshurica, Pinus koraiensis, Pinus koraiensis and Pinus koraiensis, and the mean values of maximum soil water holding capacity and available water holding capacity were the largest in Juglans mandshurica and Pinus koraiensis forests.The mean values of initial infiltration rate, steady infiltration rate and permeability coefficient were also the highest in Juglans mandshurica and Pinus koraiensis forest, which were 3.64 ~ 2.781.10mm / min, respectively57.67 ~ 58.47 t / hm ~ (-1) ~ (-1) 路min ~ (-1) ~ (-1) ~ (-1) 路min ~ (-1).According to the hydrological characteristics of litter layer and soil layer of 4 types of Korean pine plantation, the water storage capacity of stand was the strongest in Juglans mandshurica and Pinus koraiensis plantation, and the weakest in pure Pinus koraiensis forest.The results of the study can provide an argument for soil and water conservation in the study area.
【作者单位】：东北林业大学林学院;
【基金】：黑龙江省省级财政林业科研专项(201522)
【分类号】：S714

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