FLUXES OF IONS IN PRECIPITATION, THROUGHFALL AND STEMFLOW IN AN URBAN FOREST IN KUALA-LUMPUR, MALAYSIA

被引：16

作者：

ABAS, MR ^{[1
]}

AHMADSHAH, A ^{[1
]}

AWANG, MN ^{[1
]}

机构：

[1] UNIV MALAYA,DEPT BOT,KUALA LUMPUR 59100,MALAYSIA

来源：

ENVIRONMENTAL POLLUTION | 1992年 / 75卷 / 02期

关键词：

D O I：

10.1016/0269-7491(92)90041-8

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

A study was carried out to determine the chemical composition of bulk precipitation, throughfall and stemflow in an urban forest in Kuala Lumpur, Malaysia. The mean weekly rainfall recorded during the period of study was 63.2 mm. Throughfall, stemflow and canopy interception of incident precipitation were 77.1%, 1.2% and 21.7% respectively. Bulk precipitation, throughfall and stemflow were acidic, the pH recorded being 4.37, 4.71 and 4.15 respectively. In all cases the dominant ions were NO3, SO4, Cl, NH4, K, Ca and Na. Of the ions studied Ca, K, Cl, SO4, Mg and Mn showed net increases in passing through the forest canopy, while NH4, Na, NO3, Zn, H and Fe showed net retention. This study shows that the urban environment of Kuala Lumpur contributes considerable amounts of materials to the atmosphere, as reflected by the high ionic contents in bulk precipitation, throughfall and stemflow.

引用

页码：209 / 213

页数：5

共 23 条

[1] INFLUENCE OF TREE CANOPIES ON THE QUANTITY OF WATER AND AMOUNT OF CHEMICAL-ELEMENTS REACHING THE PEAT SURFACE OF A BASIN MIRE IN THE MIDLANDS OF ENGLAND [J].