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祁连山青海云杉林地土壤水分特征研究
引用本文:党宏忠,赵雨森,陈祥伟,李进军,达光文,朱有文.祁连山青海云杉林地土壤水分特征研究[J].应用生态学报,2004,15(7):1148-1152.
作者姓名:党宏忠  赵雨森  陈祥伟  李进军  达光文  朱有文
作者单位:1. 东北林业大学林学院,哈尔滨,150040
2. 甘肃省天祝县林业局,天祝,733200
基金项目:国家“十五”科技攻关项目 ( 2 0 0 1BA5 10B 0 2 0 5 )
摘    要:通过对祁连山青海云杉林地土壤水分含量及主要影响因子的测定,结果表明,青海云杉林地土壤具有容重低、入渗率高、土壤水分含量垂向分布受降水影响明显等特征,灌木-青海云杉林、苔藓-青海云杉林和草地(对照)平均容重分别为0.522、0.641、0.874g·cm^-3.土壤初渗率分别为6.0、21.0、2.5mm·min^-1,稳渗率分别为3.98、11.2、0.5mm·min^-1.苔藓-青海云杉林地土壤可划分为4层:水分活跃层(0~30cm)、水分调节层(30~60cm)、水分传输层(60~80cm)和蓄水层(80ClTI以下),各层土壤贮水量分别为3.30、3.17、2.80和2.83mm·cm^-1.灌木-青海云杉林可分为3层:水分稳定层(0~30cm)、水分活跃层(30~60cm)和水分传输层(60cm以下),各层土壤贮水量分别为3.98、3.65、3.48mm·cm^-1.两种林地土壤水分含量的季节变化受降水影响较大,相比而言,苔藓.青海云杉林地入渗率更高,有较明显的蓄水层,水分传输能力更强,而灌木-青海云杉林地贮水能力更强.

关 键 词:祁连山  苔藓-青海云杉林  灌木-青海云杉林  土壤水分
文章编号:1001-9332(2004)07-1148-05
修稿时间:2003年5月16日

Soil water characteristics in Picea crassifolia forestry lands in Qilian Mountains
DANG Hongzhong,ZHAO Yusen,CHEN Xiangwei,LI Jinjun,DA Guangwen,ZHU Youwen.Soil water characteristics in Picea crassifolia forestry lands in Qilian Mountains[J].Chinese Journal of Applied Ecology,2004,15(7):1148-1152.
Authors:DANG Hongzhong  ZHAO Yusen  CHEN Xiangwei  LI Jinjun  DA Guangwen  ZHU Youwen
Institution:College of Forestry, Northeast Forestry University, Harbin 150040, China. hzdang2003@yahoo.com.cn
Abstract:The study of soil water content and its main affecting factors in Picea crassifolia forestry lands in Qilian Mountains showed that the Picea crassifolia forestry lands were characterized by lower soil bulk weight and higher soil water infiltration rate, and the vertical distribution of soil water was apparently affected by precipitation. The soil bulk weight of shrub-Picea crassifolia forestry land, moss-Picea crassifolia forestry land and meadow land was 0.522, 0.641 and 0.874 g x cm(-3), initial water infiltration rate was 6.0, 21.0 and 2.5 mm x min(-1), and stable infiltration rate was 3.98, 11.2 and 0.5 mm x min(-1), respectively. The soil of moss-Picea crassifolia land in 100 cm depth could be partitioned into 4 layers, i.e., active layer (0 - 30 cm), regulation layer (30 - 60 cm), transmission layer (60 - 80 cm) and accumulation layer (below 80 cm), and the amount of stored water in each layer was 3.30, 3.17, 2.80 and 2.83 mm x cm(-1), respectively. The soil of shrub-Picea crassifolia land could be partitioned into 3 layers, i.e., stable layer (0 - 30 cm), active layer (30 - 60 cm) and transmission layer (below 60 cm), and the amount of stored water in each layer was 3.98, 3.65 and 3.48 mm x cm(-1), respectively. The seasonal variance of soil water content in Picea crassifolia forestry lands was strongly affected by precipitation. The water holding capacity of shrub-Picea crassifolia forestry land was higher and the water transmission capability was lower than that of Moss-Picea crassifolia forestry land.
Keywords:Qilian Mountains  Moss-Picea crassifolia forestry  Shrub-Picea crassifolia forestry  Soil water  
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