北京密云水库库区水源涵养林冠层水文特征研究  

Hydrological Properties of the Canopy of Water Resource Protection Stands in the Miyun Reservoir Watershed, Beijing

作　　者：刘世海[1] 余新晓[2] 

机构地区：[1]北京交通大学,北京100044 [2]北京林业大学,北京100083

出　　处：《林业科学》2005年第1期194-197,共4页Scientia Silvae Sinicae

基　　金：国家‘十五’科技攻关专题"退耕还林还草工程区水源涵养型植被建设技术研究与示范"(2 0 0 1BA5 10B0 2 -0 2 );中德密云合作"密云水库集水区经营"项目资助。

摘　　要：Miyun Reservoir provides more than 70% drinking water resources for Beijing, it is very important that to study the hydrological properties of canopy of water resources protection forests, which to help managing and cultivating the water resources protection forests. In this paper, the stands of Robinia pseudoacacia, Pinus tabulaeformis and Castanea mollissima were studied from 1999 to 2000. The total precipitation amount was 545 mm in the 2 main rain periods from 1999 to 2000, distribution in canopy interception, through_fall and stem_flow in the R.pseudoacacia stand were 97.73 mm, 434.78 mm and 12.49 mm, respectively, that in the P.tabuleaeformis were 131.54 mm, 397.98 mm and 15.48 mm, respectively, and in the C.mollissima stand were 110.73 mm, 422.07 mm and 12.20 mm, respectively. The canopy interception and stem_flow amount of P.tabulaeformis stand, the through_fall amount of R.pseudoacacia stand was the biggest among the three stand respectively. The elements content of N, P, K, Na, Ca, Mg, Fe, Zn, Cu and Mn were monitored for the precipitation, canopy interception, through_fall and stem_flow of the three forest types. The total amount of weighed average content of ten chemical elements in precipitation was 12.001 1 mg5L -1. The sequence of the chemical elements weighted average content of the precipitation is followed: Ca > N > K > Mg > Na > P > Fe > Zn > Cu > Mn. The concentration of chemical elements of through_fall and stem_flow varied in differently for three forest types in comparison with the precipitation’s.Miyun Reservoir provides more than 70% drinking water resources for Beijing, it is very important that to study the hydrological properties of canopy of water resources protection forests, which to help managing and cultivating the water resources protection forests. In this paper, the stands of Robinia pseudoacacia, Pinus tabulaeformis and Castanea mollissima were studied from 1999 to 2000. The total precipitation amount was 545 mm in the 2 main rain periods from 1999 to 2000, distribution in canopy interception, through_fall and stem_flow in the R.pseudoacacia stand were 97.73 mm, 434.78 mm and 12.49 mm, respectively, that in the P.tabuleaeformis were 131.54 mm, 397.98 mm and 15.48 mm, respectively, and in the C.mollissima stand were 110.73 mm, 422.07 mm and 12.20 mm, respectively. The canopy interception and stem_flow amount of P.tabulaeformis stand, the through_fall amount of R.pseudoacacia stand was the biggest among the three stand respectively. The elements content of N, P, K, Na, Ca, Mg, Fe, Zn, Cu and Mn were monitored for the precipitation, canopy interception, through_fall and stem_flow of the three forest types. The total amount of weighed average content of ten chemical elements in precipitation was 12.001 1 mg5L -1. The sequence of the chemical elements weighted average content of the precipitation is followed: Ca > N > K > Mg > Na > P > Fe > Zn > Cu > Mn. The concentration of chemical elements of through_fall and stem_flow varied in differently for three forest types in comparison with the precipitation's.

关 键 词：林冠层 水源涵养林 密云水库 水文特征 库区 北京 

分 类 号：S727[农业科学—林木遗传育种] F721.2[农业科学—林学]