查詢結果分析
來源資料
相關文獻
- Low-molecular-weight Organic Acids and Metal Speciation in Rhizosphere and Bulk Soils of a Temperate Rain Forest in Chitou, Taiwan
- 添加鎘處理對菸草根圈分泌低分子量有機酸的影響
- Ideas of Rhizosphere Soil Study--A Review
- 塔塔加鞍部鐵杉林及玉山箭竹之根圈與本體土壤低分子量有機酸含量和有機碳官能基之測定
- 塔塔加地區臺灣二葉松根圈土壤與本體土壤之金屬化合物物種之分佈
- 重金屬污染土壤中的鎘與鋅
- 溪頭地區孟宗竹根圈與本體土壤理化性質之分析與碳-13核磁共振光譜之探討
- 溪頭地區紅檜根圈與本體土壤理化性質與金屬形態分佈之研究
- 土壤重金屬鎘對小米根圈之低分子量有機酸的影響
- 茶園土壤管理對溶磷細菌之影響
頁籤選單縮合
題名 | Low-molecular-weight Organic Acids and Metal Speciation in Rhizosphere and Bulk Soils of a Temperate Rain Forest in Chitou, Taiwan=溪頭溫帶森林根圈非根圈土壤中低分子量有機酸與重金屬物種之研究 |
---|---|
作者 | 江凱楹; 王亞男; 王明光; 江博能; | 書刊名 | 臺灣林業科學 |
卷期 | 21:3 民95.09 |
頁次 | 頁327-337 |
分類號 | 436.193 |
關鍵詞 | 非根圈土壤; 可萃取金屬; 低分子量有機酸; 連續萃取法; 根圈土壤; Bulk soils; Extractable metals; Low molecular weight organic acids; Multiple-step extraction; Rhizosphere soils; |
語文 | 英文(English) |
中文摘要 | 本研究之目的在於調查在中海拔紅檜、柳杉及孟宗竹根圈與非根圈土壤之基本土壤物理化學性質和低分子量有機酸以及可萃取土壤金屬之相關性。本研究使用傳統方法分析土壤物理化學性質,而在根圈及非根圈土壤之金屬劃分則使用連續萃取法,以氣體色層分析儀測定土壤之低分子量有機酸含量。一般而言,根圈土壤之酸鹼值低於非根圈土壤,根圈土壤之平均陽離子交換容量、有機碳、有機氮及黏土含量高於非根圈土壤 (p < 0.05)。另外,根圈土壤之草酸、丙二酸、反-丁烯二酸及琥珀酸含量也大於非根圈土壤。經連續萃取法所萃取之鋁、鐵、錳、銅及鋅分佈在可交換、碳酸根、有機錯合、無定型-膠體-鍵結以及殘留部份。可抽出之鋁及鐵的濃度與草酸及低分子量有機酸呈現相當高度相關性(p < 0.01)。但在根圈土壤中可萃取出的錳、銅及鋅的含量與低分子量有機酸之含量的相關性不佳。 |
英文摘要 | In this study, we investigated the basic soil physiochemical properties, low molecular weight organic acids (LMWOAs), and the associated speciation and sequential extractability of selected metals in rhizosphere and bulk soils of 3 trees, namely Chamaecyparis formosensis, Cryptomeria japonica, and Phyllostachys pubescens, of montane forests in Taiwan. LMWOAs were identified by gas chromatography, and the basic physiochemical properties of the soils were determined by conventional methods. Various fractions of metals in rhizosphere and bulk soils were extracted by a multiple-step extraction method. The pH of rhizosphere soils was found to be lower than that of bulk soils. The mean cation-exchange-capacity (CEC), organic carbon, nitrogen, and clay contents of rhizosphere soils as well as oxalic, malonic, fumaric, and succinic acids were greater than those in bulk soils (p < 0.05). Metal speciation fractionated by multiple-step extractions showed that Al, Fe, Mn, Cu, and Zn were distributed in different exchangeable, carbonate-bound, organic complex-bound, amorphous mineral colloid-bound, and residual fractions. No significant differences were observed among the tree species in physicochemical properties or metal fractionation except for LMWOAs. Concentrations of extractable Al and Fe showed high correlation with oxalic acid and total LMWOAs (p < 0.01). However, the extractable Mn, Cu, and Zn in the rhizosphere soils showed poor correlations with LMWOAs. |
本系統之摘要資訊系依該期刊論文摘要之資訊為主。