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长白山沟谷沼泽乌拉苔草湿地,土壤有效铁含量不同土壤层变化均呈波动变化,A、B二层的变化趋势一致,表层和C层随着季节的积水和植物生长变化波动较大。有效铁活性A层>表层>B层;而土壤有效铁活性与土壤环境的关系为:土壤氧化还原电位对有效铁在6、8月份呈显著相关;土壤孔隙度均与之不显著相关;放线菌在表层土壤和有效铁含量极显著负相关外,8月份细菌、真菌、放线菌和有效铁呈极显著的相关;土壤剖面的蛋白酶、尿酶、纤维素酶和磷酸酶对有效铁均不显著相关(P<0.05);脲酶对有效铁有显著的影响,因此脲酶可以作为有效铁的衡量指标。乌拉苔草丛生根部含铁量最多;而不同季节乌拉苔草对土壤有效铁的吸收率在7月份最大;而枯落物中铁向下迁移最大月份是8月。
Changbai Mountain valleys wetlands of Carex grassland wetlands, soil available iron content of different soil layers showed a fluctuant change, A, B two layers of the same trend, the surface layer and C layer with seasonal fluctuations and plant water fluctuations. Effective iron active layer A> surface layer> B layer. The relationship between soil available iron activity and soil environment is that soil redox potential is significantly correlated with available iron in June and August, and soil porosity is not significantly correlated with soil iron content. Bacteria, fungi, actinomycetes and available iron were significantly and significantly correlated with the extremely significant negative correlation between soil available iron and soil available iron in August. Proteases, ureases, cellulases and phosphatases from soil profile were significantly negatively correlated with available iron (P <0.05). Urease had a significant effect on available iron, so urease could be used as a measure of effective iron. The content of iron in the roots of Carex lasiocarpa was the highest, while the absorption rate of available iron in soil was the largest in July, while the largest month in the litter was downward in August.