2010-09-012024-05-18https://scholars.lib.ntu.edu.tw/handle/123456789/698020摘要：土壤重金屬污染是目前臺灣與世界各國在環境議題上的重要挑戰， 近年來， 許多砷污染 土壤案例日漸出現， 但符合臺灣本土條件之相關完整研究卻付之闕如。日前在台北關渡 平原農田土壤發現之大面積高濃度砷與鉛污染土壤，引起相關單位與當地居民高度重 視， 值得加以研究以釐清許多疑慮與科學上之問題。本研究計畫希望以三年的時間， 針 對砷在臺灣地區8 個不同母質沖積土壤與關渡平原12 個不同砷濃度污染土壤之動態與 對農業生態環境及作物生產及品質之影響， 進行整合性探討， 並提出適切之因應管理措 施。98 年度研究主題為「影響土壤砷有效性與型態變化之主要土壤性質」，探討(1)關渡 平原土壤砷的主要存在型態與有效性；(2)砷在臺灣各種不同性質土壤與水田、旱田條件 下的型態變化；與(3) 影響土壤砷有效性之主要土壤性質。99 年度研究主題為「不同種 類作物於關渡平原砷污染土壤之生長與砷吸收狀況」，研究內容包括(1)根莖類作物、葉 菜類作物與穀類作物於關渡平原不同砷污染程度土壤之生長與砷吸收狀況；(2)適用於關 渡平原之砷土壤速測法之建立； 與(3)作物砷毒害之土壤臨界砷濃度。100 年度研究主題 為「各種土壤改良劑對污染土壤砷有效性與移動性之效應評估」，探討(1)石灰與化學磷 肥施用對關渡平原污染土壤砷有效性之影響；(2)三種穩定化法土壤改良劑對各種砷污染 土壤之效應； 與(3)各種砷污染土壤之最佳因應管理措施。本研究計畫之成果與相關研究 經驗將有助於臺灣面對砷污染土壤問題之挑戰。 <br> Abstract: Heavy metal pollution in soils is a big challenge on environment issues for Taiwan and worldwide countries. In recent years, many cases of arsenic-contaminated soils occurred, however, the related studies specific for Taiwan were few. A large area of arsenic-contaminated soils was found in the field of Guandu Plain, which was noted by the government and local residents, and studies were needed to clarify many doubts and scientific problems. The objective of this three-year project is to investigate the dynamics of arsenic in 8 alluvial soils from various parent materials in Taiwan and 12 arsenic-contaminated soils in Guandu Plain and their effects on agroecosystem and crop production and quality. The objectives of the first-year project (2009) are (1) to examine the availability and major fractionations of arsenic in soils of Guandu Plain; (2) to investigate the transformation of arsenic under upland and wetland conditions in different soils of Taiwan; and (3) to determine the soil properties which affected the soil arsenic availability. The objectives of the second-year project (2010) are (1) to examine the growth and arsenic uptake of rhizome crops, vegetable crops, and cereal corps cultivated in arsenic-contaminated soils of Guandu Plain; (2) to develop soil test for arsenic in Guandu Plain; and (3) to establish critical arsenic concentration in soils causing crop toxicity. The objectives of the third-year project (2011) are (1) to investigate the effect of lime and chemical phosphorous fertilizer application on soil arsenic availability in Guandu Plain; (2) to examine the effect of three soil amendments for soil stabilization on various arsenic-contaminated soils; and (3) to establish best management for different arsenic-contaminated soils. The results of this project and the research experiences will contribute to tackle the problems of arsenic-contaminated soils in Taiwan.砷污染農業生態環境作物品質砷有效性型態砷土壤速測法土壤改良劑Arsenic contaminationAgroecosystemcrop qualityArsenic available fractionationArsenic soil testSoil conditioner土壤性質與土壤改良劑對砷在土壤中的化學行為與植物有效性之影響評估(國科會)