查詢結果分析
相關文獻
- 臺灣冷杉林外降雨、穿落水與幹流水化學變化
- 幹流水和穿落水的水量及水質在三種林分的變化
- 合歡山臺灣冷杉林降水再分配
- Effects of Natural Leachates of Acacia Dealbata Link in Galicia (NW Spain)
- Nitrogen Deposition in Three Stands of Guandaushi Forest Ecosystem
- 福山天然闊葉林生態系對降水水化學的交互作用
- 森林集水區對酸性與非酸性沈降之水化學變化--以臺灣北部文山林場為例
- 利用混沉降物的收集以推估林木對空氣污染物的截留能力
- 關刀溪森林集水區降水及溪水水化學
- 應用DTM資料探討合歡山地區臺灣冷杉空間分佈之特性
頁籤選單縮合
題 名 | 臺灣冷杉林外降雨、穿落水與幹流水化學變化=Changes in Water Chemistry of Rainfall, Throughfall and Stemflow in the Taiwanese Fir Forest at the Mt. He-Huan Area |
---|---|
作 者 | 金佐蒔; 林京翰; 王立志; | 書刊名 | 國立臺灣大學生物資源暨農學院實驗林研究報告 |
卷 期 | 32:1=299 2018.03[民107.03] |
頁 次 | 頁61-74 |
分類號 | 436.19 |
關鍵詞 | 臺灣冷杉; 林外降雨; 穿落水; 幹流水; 水化學; Taiwanese fir; Abies kawakamii; Rainfall; Throughfall; Stemflow; Water chemistry; |
語 文 | 中文(Chinese) |
中文摘要 | 為了解合歡山臺灣冷杉(Abies kawakamii)林冠與降雨化學交互作用,本研究於2011年1月至12月一年期間,收集合歡山臺灣冷杉林外降雨、林內穿落水與幹流水雙週水樣,進行水化學分析。研究結果顯示,合歡山降雨年平均電導度僅為 3.3 ± 4.6 μS/cm,平均酸鹼值為5.78 ± 0.61,呈弱酸性。雨水中陽離子平均濃度以NH_4^+之5.64±14.92μeq/L為最高,其它依次為Ca^(2+) > Na^+ > K^+,Mg^(2+)則低於檢測低限。而陰離子平均濃度以HCO_3^-之32.20±14.21μeq//L為最高,其它依次為SO_4^(2-) > NO_3^- > Cl^-。此些結果顯示合歡山降雨溶解離子濃度偏低,明顯低於其它臺灣中低海拔森林降雨溶解離子濃度。合歡山臺灣冷杉林內穿落水與幹流水中年平均電導度略微增加,平均酸鹼值略微降低,仍呈弱酸性。穿落水與幹流水+ 中陰、陽離子平均濃度皆較雨水中各項離子濃度增加許多,其中陽離子以K^+濃度增加最為明顯,其次為Mg^(2+)與Ca^(2+);陰離子則以HCO_^-3濃度增加最為明顯,顯示合歡山臺灣冷杉林冠與雨水之交互作用以此些離子交換為主。合歡山臺灣冷杉林外降雨、林內穿落水與幹流水化學雙週變化亦顯示,臺灣冷杉林冠與降雨之化學交互作用陽離子以K^+、Ca^(2+)與Mg^(2+)交換為主,陰離子則以HCO_3^-交換為主,而SO_4^(2-)與NO_3^-於冬春季濃度較高現象,可能顯示境外遠程傳輸的影響。 |
英文摘要 | In order to understand interactions between canopy of Taiwanese fir (Abies kawakamii) and rainfall, rainfall, throughfall and stemflow samples were collected bi-weekly and analyzed for major ions, from January to December, 2011 at Mt. He-Huan area. Results showed that average conductivity of rainfall was only 3.3±4.6 μS/cm, average pH was 5.78±0.61 and classified as weakly acidic, in the alpine region. The highest average cation concentration of rainfall was NH_4^+ (5.64±14.92 μeq/L), followed by Ca^(2+) > Na^+ > K^+, and Mg^(2+) was non-detectable. The highest average anion concentration was HCO_3^- (32.20±14.21μeq/L), followed by SO_4^(2-) > NO_3^- > Cl^-. These results showed that rainfall was relatively low in ionic concentration and less affected by pollution in this alpine ecosystem, and ionic concentration was lower than that in forested ecosystems at lower altitudes of Taiwan. These phenomena were possibly due to greater distance of Mt. He-Huan site to pollution sources, and also possibly due to releasing effects as cloud uplifting toward the central mountain range. Compared to that of rainfall, average conductivity of througfall and stemflow were slightly increased, while average pH decreased slightly, and average cation and anion concentrations of throughfall and stemflow also showed an increase, indicating canopy interactions between rainfall and Taiwanese fir forest. The biggest increase in cation concentration of throughfall and stemflow was K^+, followed by Mg^(2+) and Ca^(2+) , while the biggest increase in anion concentration was HCO_3^-, indicating major interaction were caused by exchange of these species. Changes in bi-weekly water chemistry of rainfall, throughfall and stemflow also showed that interactions between rainfall and Taiwanese fir canopy were mainly caused by exchanges of K^+、Ca^(2+) and Mg^(2+) for cations, and HCO_3^- for anions. Nevertheless, higher concentration of SO_4^(2-) and NO_3^- in rainfall, throughfall and stemflow in winter/spring could be affected by long distance atmospheric deposition. |
本系統中英文摘要資訊取自各篇刊載內容。