冀北山地油松林枯落物的持水特性研究  

Water holding capacity of litters of Pinustabulaeformis forests in the northern mountains of Hebei Province

作　　者：王海东[1] 李明桂[1] 张丽玮[2] 徐学华[2] 

机构地区：[1]河北省木兰围场国有林场管理局,河北围场068450 [2]河北农业大学林学院,河北保定071000

出　　处：《河北林果研究》2014年第3期263-266,共4页Hebei Journal of Forestry and Orchard Research

基　　金：河北省科技计划项目"常绿景观植物引进筛选和山地景观林生态美化功能研究"(11236713D-X);河北省科技计划项目"冀北山地油松生态景观林结构调整技术研究"(12237510)

摘　　要：为了阐明冀北山地油松林枯落物的持水规律,对其枯落物蓄积量、持水量、吸水速率和有效拦蓄量进行了研究。结果表明:油松林枯落物的未分解层和半分解层蓄积量分别为2.95t/hm2和11.58t/hm2。油松林枯落物半分解层和未分解层持水量在浸泡6h和4h时基本达到饱和;吸水速率随着时间的延长逐渐下降。油松未分解层和半分解层枯落物最大持水量分别为2.28t/hm2、14.23t/hm2,而有效拦蓄量分别为1.69t/hm2和10.77t/hm2。In order to clarify the water holding capacity of litters of Pinus tabulaeformis forest in the northern mountains of Hebei Province ,the litter stock ,water holding capacity , water absorption rate and modified interception amount at Mulanweichang were studied .The result showed that ：the litter amount of Pinus tabulae f ormis forest at undecomposed layer and semi decomposed layer was 2 .95 t/hm2 and 11 .58 t/hm2 . Water absorption rate decreased gradually with the immersion time increasing .when immersed for 4 h and 6 h , respectively ,both undecomposed litter ,and semidecomposed litter were saturated ,with the maximum water holding capacity and effective interception amount of 2 .28 t/hm2 and 14 .23 t/hm2 ,and 1 .69 t/hm2 and 10 .77 t/hm2 respectively .

关 键 词：油松林 枯落物 蓄积量 持水量 吸水速率 

分 类 号：S715.7[农业科学—林学]