对草原土壤Ｎ２Ｏ释放及其受全球变暖土壤养分变化的影响研究表明，以沼泽泥炭土Ｎ２Ｏ释放量最大，生长季节为１３～１２．２ｋｇＮ·ｈｍ－２·ａ－１，其次灰壤土，为１．５～２．４ｋｇＮ·ｈｍ－２·ａ－１，酸性棕壤最小，为０～３．２ｋｇＮ·ｈｍ－２·ａ－１；Ｎ２Ｏ的释放层灰壤土在０～５ｃｍ，其它２种土壤为０～１０ｃｍ；施肥试验表明，Ｎ、Ｐ肥在生长季节对土壤Ｎ２Ｏ释放量影响不显著，但在生长季末期，Ｎ肥对酸性棕壤及灰壤土Ｎ２Ｏ影响显著，施肥后第３天酸性棕壤由对照的１．３提高到４４．２ｋｇＮ·ｈｍ－２·ａ－１，灰壤土则由对照的１．９提高到３１．１ｋｇＮ·ｈｍ－２·ａ－１，说明全球变暖对土壤有机质分解的影响不会诱发Ｎ２Ｏ释放量的大幅度增加． The results showed that N2O released from marsh peat soil was the largest, with the growth season being 13 ~ 12.2kgN · hm-2 · a-1, followed by gray loam 1.5-2.4kgN · hm-2 · a-1, with the smallest amount of acidic brown soil, ranging from 0 to 3.2kgN · hm-2 · a-1. Soil fertility test showed that N and P fertilizer had no significant effect on soil N2O release during the growing season. However, N fertilizers had a significant effect on N2O in acidic and calcareous soil at the end of the growing season. After fertilization for 3 days Acid brown soil increased from control 1.3 to 44.2kgN · hm-2 · a-1 and gray soil increased from 1.9 to 31.1kgN · hm-2 · a-1, indicating that global warming The effect on soil organic matter decomposition does not induce a substantial increase in N2O emissions.