| 知識類型 | 期刊 |
| 標題 | Biochar Diminishes Nitrous Oxide and Nitrate Leaching from Diverse Nutrient Sources |
| 作者 | Teri E. Angst, Colin J. Patterson, David S. Reay, Peter Anderson, Tanya A. Peshkur, Saran P. Sohi |
| 名稱(期刊/節目) | Journal of Environmental Quality |
| 期刊期數/節目集數 | Volume 42,Issue 3, Pages 672-682 |
| 出版單位 | Wiley |
| 出版年月日 | 2013/5/1 |
| 原文摘要 | Manure generated by intensive livestock operations poses potential ecological risk in the form of water pollution and greenhouse gas emission. To assess the impact of biochar on coarse‐textured soils under contrasting nutrient management regimes, a 55‐d incubation was conducted using unplanted soil columns amended with manure, slurry, or fertilizer (plus unamended control), each with or without biochar applied at 2% soil mass (dry weight basis). Under repeated leaching, the cumulative N2O emission from the columns was significantly affected by the presence of biochar (p < 0.0001), although these data were not normally distributed. Results indicated that the biochar‐amended soils emitted significantly less N2O than their unamended counterparts, with the exception of manure‐amended soils. The presence of biochar increased the pH of column leachate by 0.08 to 1.70 and significantly decreased the cumulative amount of mineral N leached from the soil. The presence of biochar significantly increased the amount of PO43−–P in soil leachate, but there was no significant difference between the means for any of the amendments used on their own relative to their biochar‐amended counterparts. The data demonstrate that biochar could potentially aid in the mitigation of N2O emissions from certain soils and in N loss in leachate from soil amended with slurry, manure, or fertilizer used in livestock systems. |
| 原文摘要簡述 | 集約的牲畜養殖產生的糞肥以水污染和溫室氣體排放的形式造成潛在的環境生態風險。為了評估在不同的養分管理方案下生物炭對質地粗糙土壤的影響，使用未種植土壤柱，施用糞肥，泥漿或化學肥料(加上未添加對照組)，每種施用或不施用2％生物炭的於土壤(以乾重計)經過55天的孵育管理試驗。在反覆淋溶作用下，土壤柱累積N2O排放顯著影響生物炭的存在(p<0.0001)，儘管這些數據不是常態分佈的。實驗結果顯示，經生物炭改良的土壤，排放N2O的量，明顯少於未經改良的對照組與糞肥改良的土壤。生物炭的存在使土壤柱淋溶液的PH值從0.08增加到1.70，並顯著降低從土壤中淋溶出的礦物質N(氮)的累積量。生物炭的存在顯著增加PO43-P(磷酸鹽離子-磷) 淋溶液含量在土壤中，但在任何經生物炭改良土壤與生物炭改良競爭對手間沒有顯著差異。資料顯示，生物炭可以潛在地協助從糞肥，泥漿或化學肥料在牲畜養殖系統土壤中減輕N2O的排放以及淋溶液中的N(氮)流失。 |
| 關鍵字 | coarse‐textured soil, manure leaching, biochar‐amended soil, leachate, livestock system |
| 連結 | https://doi.org/10.2134/jeq2012.0341 |