查詢結果分析
相關文獻
- 福山森林土壤中硫酸根吸附行為之探討
- 阿里山地區森林土壤之酸雨緩衝性研究(2)
- 臺灣森林土壤之硫酸根吸附與脫附行為(1)--土壤性質與硫酸根吸附量之關係及其吸附機制
- 臺灣森林土壤之硫酸根吸附與脫附行為(2)--模擬酸雨對硫酸根之吸附與脫附之影響
- 塔塔加森林土壤有機酸含量之研究
- 阿里山地區森林土壤之酸雨緩衝性研究(1)
- 臺灣高山森林土壤研究的近況
- 臺灣地區淋澱化土的形態特徵與分類
- Prediction of Soil Depth Using a Soil-Landscape Regression Model: A Case Study on Forest Soils in Southern Taiwan
- [fed8]C在森林土壤之應用
頁籤選單縮合
題名 | 福山森林土壤中硫酸根吸附行為之探討=Sulfate Sorption of Fu-Shan Forest Soils |
---|---|
作者 | 梁家祺; 王明光; 金恆鑣; Liang, Jia-chi; Wang, Ming-kuang; King, Hen-biau; |
期刊 | 中國農業化學會誌 |
出版日期 | 19980200 |
卷期 | 36:1 1998.02[民87.02] |
頁次 | 頁42-56 |
分類號 | 436.193 |
語文 | chi |
關鍵詞 | 水化蛭石; 游離氧化鐵; 磁性黏粒; 森林土壤; 硫酸根吸附; Hydroxy-interlayered vermiculite; Free iron oxides; Magnetic clay; Forest soil; Sulfate sorption; |
中文摘要 | 近年來,酸性沉降物對環境所造成的衝擊,已逐漸受到環境科學家的重視,而酸 雨對土壤的影響,主要是造成鹽基陽離子的淋溶、增加 Al ���妒熒遘捋P移動及加速土壤的 酸化,其中尤以森林土壤所受到的影響更大。由於不同的土壤,具有不同緩衝酸降的能力和 吸附硫酸根的機制,所以酸雨對其所造成的影響亦有差異。本實驗所選用的土壤為福山森林 1 號集水區內的土壤剖面,本研究的主要目的為探討土壤吸附硫酸根能力與土壤有機質,無 定形氧化鐵,游離氧化鐵及磁性、非磁性黏粒氧化鐵含量之相關性。結果顯示,福山土壤在 此酸性風化的環境下,產生了多量的水化蛭石( hydroxy-interlayered vermiculite ), 故在長期酸降的過程中,黏土礦物的改變對於土壤緩衝酸雨佔了很重要的地位。福山土壤的 原始硫酸根吸附量與其他土壤理化性質的相關性, 其中以有機物含量與 DCB 所抽出鐵的量 相關最好,其相關係數( r )分別為 -0.86 及 0.91。 在土壤除去有機質後,A 層之硫酸 根最大吸附量比未經處理之土壤大了三倍, 故 A 層多量的有機質,對硫酸根的吸附有很大 的影響;而將游離氧化鐵鋁去除後,土壤吸附硫酸根的能力變得非常弱,故福山地區土壤, 可將游離氧化鐵鋁之含量,作為評估土壤吸附硫酸根能力之重要因子。土壤黏粒經高梯度磁 場分離( high gradient magnetic separator,HGMS )後,磁性黏粒部份的游離氧化鐵, 其單位土重之含量明顯的較原土壤高,而福山土壤磁性黏粒部份對硫酸根的吸持量均較非磁 性黏粒部份為高,由此可知土壤對硫酸根之吸持,主要應以游離氧化鐵為主。 |
英文摘要 | The impact of acid deposition on the environment has been studied by many environmental scientists. Acid rain affects the leaching of cations, mobility of Al ���� and soil acidity, particularly in forest soils. The buffer ability of various soils includes various mechanisms of sulfate retention. Soil samples for this study were collected in the soil profile of the Fu-Shan watershed. The objective of this work was to understand the correlation between sulfate retention and soil physical and chemical properties, such as the organic matter, noncrystalline and free iron oxides, and sesquioxides contents of magnetic and tailing clay fractions. A large amount of hydroxy-interlayered vermiculite was found in the Fu-Shan soils, and it was produced under acidic weathering conditions. The change of the clay mineral composition was an indication of the soil buffering capacity in long term deposition of acid rain. The sulfate sorption correlated very well with soil organic matter and free iron oxides. The correlation coefficients were -0.86 and 0.91, respectively. Removal of soil organic matter (SOM), soil (A horizon) sorbed three times of sulfate more than without removing SOM treatment, which indicated that high SOM contents inhibited sulfate sorption. On the other hand, removal of free iron and aluminum oxides by means of dithionite-citrate-bicarbonate (DCB) solutions caused low sulfate sorption. Thus, it can be seen that the free iron and aluminum oxides contents were the major factor influencing sulfate sorption capacity. Soil clays treated with high gradient magnetic separation (HGMS) fractionated into magnetic and tailing fractions. The high free iron oxide contents in the magnetic clay fraction also sorbed more sulfate than did the tailing clay fractions. Thus, the free sesquioxides contents were the key factor in sorption of sulfate. |
本系統之摘要資訊系依該期刊論文摘要之資訊為主。