小兴安岭典型泥炭沼泽土壤水分物理性质研究  

Study on Soil Water Physical Features of Typical Peat Swamps in Xiaoxing'anling Mountain

作　　者：张阳武[1,2] 蔡体久[1] 赵天力[1,3] 刘斌[1] 李奕[1] 

机构地区：[1]东北林业大学,哈尔滨150040 [2]国家林业局调查规划设计院,北京100714 [3]沈阳建筑大学,沈阳110168

出　　处：《森林工程》2009年第6期10-14,共5页Forest Engineering

基　　金：国家自然基金项目(30771713);黑龙江省科技攻关项目(WB08B04)

摘　　要：对小兴安岭5类典型泥炭沼泽土壤水分物理性质进行对比研究,结果表明：落叶松-杜香-泥炭藓沼泽土壤容重最小,非毛管孔隙最高,持水性最好;漂筏苔草沼泽和油桦-笃斯越桔-修氏苔草沼泽次之,修氏苔草沼泽和白桦-油桦-小叶章沼泽相对较差。落叶松-杜香-泥炭藓沼泽0~40 cm平均土壤容重为0.06g.cm-3,非毛管孔隙31.69%,总孔隙度高达87.19%,平均土壤质量含水量、最大持水量、毛管持水量和最小持水量分别为1130.1%、1586.57%、1007.71%和882.70%,是对照林地的56.6倍、26.4倍、24.9倍和25.5倍。在5类泥炭沼泽中,白桦-油桦-小叶章沼泽0~40 cm平均土壤容重最高（0.74 g.cm-3）,总孔隙度最低（62.02%）,土壤各持水指标均最小,但其持水指标均显著高于对照林地。Soil water physical features of five kinds of typical peat swamps were compared in Xiaoxing＇anling Mountain,and the following results were obtained.The Larix gmelinii-Ledum palustre-Sphagnum swamp had the least soil density,the highest non-capillary porosity and the optimum water holding,and the Carex pseu-docuraica swamp,the Betula ovalifolia Ruprecht-Vaccinium uliginosum-Carex schmidtii swamp,the Carex schmidtii swamp,as well as the Betula platyphylla-Betula ovalifolia Ruprecht-Deyeuxia angustifolia swamp followed in turn.In the Larix gmelinii-Ledum palustre-Sphagnum swamp,the average soil density from 0 to 40 cm under ground was 0.06g per cm3 while the non-capillary porosity was 31.69% and the total porosity reached to 87.06%.Furthermore,the average soil water content in quality,the maximal water holding,the capillary moisture capacity and the minimal water holding were respectively 1130.1%,1586.57%,1007.71% and 882.70%,which were 56.6,26.4,24.9,25.5 times of those in the control forest area.Among the five swamps,the Betula platyphylla-Betula ovalifolia Ruprecht-Deyeuxia angustifolia swamp had the highest soil density（0.74g per cm3）,the least total porosity（62.02%）and the smallest soil water holding indices,however,the values of water holding indices were all significantly higher than those of the control forest area.

关 键 词：小兴安岭 泥炭沼泽 土壤容重 孔隙度 持水量 

分 类 号：S714.2[农业科学—林学]