Characteristics of Acid Precipitation in the Taipei City(1981-1997)

碩士 === 國立東華大學 === 自然資源管理研究所 === 86 === Rainfall samples collected at the Taipei Botanical Garden from 1981 to 1997 were analyzed for pH, specific conductivity, and major ions. Basic statistics, seasonal patterns, deposition flux of the chemicals, and correlation among ions were examined to provide a...

Full description

Bibliographic Details
Main Authors: Chang Ya-Ping, 張雅萍
Other Authors: Yue-Joe Hsia
Format: Others
Language:zh-TW
Published: 1998
Online Access:http://ndltd.ncl.edu.tw/handle/10395047272539807096
id ndltd-TW-086NDHU0148008
record_format oai_dc
spelling ndltd-TW-086NDHU01480082015-10-13T11:06:17Z http://ndltd.ncl.edu.tw/handle/10395047272539807096 Characteristics of Acid Precipitation in the Taipei City(1981-1997) 台北市酸沈降特性分析(1981-1997年) Chang Ya-Ping 張雅萍 碩士 國立東華大學 自然資源管理研究所 86 Rainfall samples collected at the Taipei Botanical Garden from 1981 to 1997 were analyzed for pH, specific conductivity, and major ions. Basic statistics, seasonal patterns, deposition flux of the chemicals, and correlation among ions were examined to provide a baseline data for Taipei. Average of volume-weighted pH value of the rainfall was 4.91 and ranged from 3.15 to 7.66. Among the total 1089 rainfall events, 78% of them had pH value below 5.65. Monthly averages of the pH value were highest in October and lowest in July. In general, the pH values had an increased trend over the past 17 years in Taipei. The seasonal difference of pH values between summer and winter was significant. Both the pH value and ion concentrations were lower in summer and higher in winter. Annual total deposition of ammonium gradually increased from 10.2 kg/ha/y in 1981 to 45.7 kg/ha/y in 1997. Nitrate was also gradually increased from 3.5 kg/ha/y to 12.9 kg/ha/y over these years. The most contribution anions were sulfate, chloride and nitrate. For the cations, calcium, ammonium and sodium were the most contribution ones. Major neutralization ions in the precipitation were calcium, ammonium and magnesium. The equivalent ratio of NO3-/SO42- was comparable with the Northeast of United States and Europe region. Yue-Joe Hsia Hen-Biau King 夏禹九 金恆鑣 1998 學位論文 ; thesis 0 zh-TW
collection NDLTD
language zh-TW
format Others
sources NDLTD
description 碩士 === 國立東華大學 === 自然資源管理研究所 === 86 === Rainfall samples collected at the Taipei Botanical Garden from 1981 to 1997 were analyzed for pH, specific conductivity, and major ions. Basic statistics, seasonal patterns, deposition flux of the chemicals, and correlation among ions were examined to provide a baseline data for Taipei. Average of volume-weighted pH value of the rainfall was 4.91 and ranged from 3.15 to 7.66. Among the total 1089 rainfall events, 78% of them had pH value below 5.65. Monthly averages of the pH value were highest in October and lowest in July. In general, the pH values had an increased trend over the past 17 years in Taipei. The seasonal difference of pH values between summer and winter was significant. Both the pH value and ion concentrations were lower in summer and higher in winter. Annual total deposition of ammonium gradually increased from 10.2 kg/ha/y in 1981 to 45.7 kg/ha/y in 1997. Nitrate was also gradually increased from 3.5 kg/ha/y to 12.9 kg/ha/y over these years. The most contribution anions were sulfate, chloride and nitrate. For the cations, calcium, ammonium and sodium were the most contribution ones. Major neutralization ions in the precipitation were calcium, ammonium and magnesium. The equivalent ratio of NO3-/SO42- was comparable with the Northeast of United States and Europe region.
author2 Yue-Joe Hsia
author_facet Yue-Joe Hsia
Chang Ya-Ping
張雅萍
author Chang Ya-Ping
張雅萍
spellingShingle Chang Ya-Ping
張雅萍
Characteristics of Acid Precipitation in the Taipei City(1981-1997)
author_sort Chang Ya-Ping
title Characteristics of Acid Precipitation in the Taipei City(1981-1997)
title_short Characteristics of Acid Precipitation in the Taipei City(1981-1997)
title_full Characteristics of Acid Precipitation in the Taipei City(1981-1997)
title_fullStr Characteristics of Acid Precipitation in the Taipei City(1981-1997)
title_full_unstemmed Characteristics of Acid Precipitation in the Taipei City(1981-1997)
title_sort characteristics of acid precipitation in the taipei city(1981-1997)
publishDate 1998
url http://ndltd.ncl.edu.tw/handle/10395047272539807096
work_keys_str_mv AT changyaping characteristicsofacidprecipitationinthetaipeicity19811997
AT zhāngyǎpíng characteristicsofacidprecipitationinthetaipeicity19811997
AT changyaping táiběishìsuānchénjiàngtèxìngfēnxī19811997nián
AT zhāngyǎpíng táiběishìsuānchénjiàngtèxìngfēnxī19811997nián
_version_ 1716837835675271168