摘要
本文旨在探讨酸雨对台湾地区湖泊、水库等自然水域酸化的影响程度。主要内容为建立水域酸化程度之资料，以及不同pH位湖水中，铝离子释放的情形。针对台湾地区120个湖库、澎湖3个湖库、金门地区6个湖库、马祖地区5个湖库、小流球、绿岛、兰屿等地区之普遍调查，发现较受酸雨成协，也就是齿度较低的湖、库，大约占了20％。此类湖、库大多位于高海拔之高山、次高山湖泊，或是靠近北部大屯火山区，基隆火山群附近。利用NTA（normalizedtotalalkalinity，盐度标准化之碱度）来判断湖泊酸化情形，结果显示，在不同采样时期的27个湖库中，情人湖、新山水库、暖暖水库，鸳鸯湖、龙銮潭、鲤鱼潭以及小鬼湖7处的NTA有变小记录，酸化迹象明显；其中基隆情人湖、新竹鸳鸯湖、花莲鲤鱼潭与台东小鬼湖的酸化可能与酸雨较有相关。其余湖泊之NTA大多保持一定。于12个湖泊测量了重金属含量，均在水质标准之内，其中情人湖之pH值最低，重金属含量均比其他湖泊来得高。
This research focuses on understanding the inf1uence of acid rain on lakes inTaiwan. Our purpose is to document the extent of lake acidification and the rele ase of Al at various pH levels. Over 120 lakes and reservoirs in Taiwan, 3 inPenghu, 6 in Kingman, 5 in Matsu, and several in Hsialiuchiu, Lutao and Lanyuhave been investigated in the past few years. About 20% lakes with 1ow alkalinityare more threatened by the acid rain. These are mostly alpine and subalpinelakes or are located near the Tatun and Keelong volcano groups. The NTA (norma lized total alkalinity)is an acidification index for Takes. The decrease of the NTAfor Lovers Lake, Hsin-shan Res., Nuannuan Res., Yuen-Yang Lake, Lung-RungLake, Carp Lake (Hua Lien County ) and Little Ghost Lake suggestel acidification.The acidification of Lovers Lake, Yuen-Yang Lake, Carp Lake and Little GhostLake were probably related to the acid rain. The other lakes NTA mostly remai.ned constant. Heavy metal concentrations in 12 lakes were within the limit set byEPA. The Lovers Lake has lower pH but Higher Heavy metal concentrations thanthe other lakes.
出处
《海洋湖沼通报》
CSCD
北大核心
1995年第2期12-23,共12页
Transactions of Oceanology and Limnology
关键词
酸雨
湖泊
水库
碱度
重金属
PH值
acid rain, lake, reservoir, alkalinity, heavy metals, pH, Taiwan
