期刊文献+
共找到2篇文章
< 1 >
每页显示 20 50 100
Nutrient Pollution of Groundwater by Agricultural Activities in Coastal Sandy Aquifers:Experience from Sri Lanka
1
作者 Pathmakumara Jayasingha H.A.Dharmagunawardhane a.pitawala 《地学前缘》 EI CAS CSCD 北大核心 2009年第S1期19-19,共1页
Kalpitiya peninsular aquifer which is one of the highly productive and extremely permeable quarternary sand aquifers in Sri Lanka is heavily used for irrigation purposes of agricultural activities for decades.This stu... Kalpitiya peninsular aquifer which is one of the highly productive and extremely permeable quarternary sand aquifers in Sri Lanka is heavily used for irrigation purposes of agricultural activities for decades.This study focuses on the spatial and temporal nutrient pollution of groundwater of shallow aquifer of Kalpitiya peninsula and nitrate,phosphate, major cations and some physical parameters were measured during one year period covering two 展开更多
关键词 GROUNDWATER POLLUTION COASTAL aquifers agricultural activities NUTRIENTS
在线阅读 下载PDF
Forms and Agents of Weathering in Monuments of Jethawanaramaya,Anuradhapura
2
作者 A.S.Ratnayake a.pitawala 《地学前缘》 EI CAS CSCD 北大核心 2009年第S1期116-117,共2页
Sri Lanka has the richest archaeological sites in Asia.Stone monuments and the stupa of Jethawanara, belonging to the 4th Century B.C.,represent a cultural heritage of outstanding universal value.All monuments built m... Sri Lanka has the richest archaeological sites in Asia.Stone monuments and the stupa of Jethawanara, belonging to the 4th Century B.C.,represent a cultural heritage of outstanding universal value.All monuments built mainly from granitic gneiss and marble have undergone marked weathering damages. According to the definitions,weathering forms were identified and they were categorized into 展开更多
关键词 WEATHERING MONUMENTS CLIMATIC
在线阅读 下载PDF
上一页 1 下一页 到第
使用帮助 返回顶部