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在我国北方农牧交错带,研究了不同土地利用方式对土壤质量的影响.结果表明,天然草地和过牧草地土壤全氮、总有机碳和全磷含量整体高于耕地和林间草地,退耕地种草后土壤全氮、总有机碳含量增加,全磷含量无显著变化.耕地和过牧草地土壤速效磷含量高于其他土地利用方式.天然草地、过牧草地和耕地土壤pH值显著高于林间草地和人工草地,而土壤电导率均为过牧草地显著高于天然草地,天然草地显著高于林间草地、人工草地和耕地.林间草地和过牧草地土壤容重显著高于天然草地和耕地,而天然草地土壤含水量显著高于其它土地利用方式,林间草地土壤含水量最低.
The effects of different land use types on soil quality were studied in the ecotone between agriculture and animal husbandry in northern China.The results showed that the contents of total nitrogen, total organic carbon and total phosphorus in natural grassland and pastureland were higher than those in cultivated land and forest grassland, Soil total nitrogen and total organic carbon content increased after the planting of grassland, and there was no significant change in total phosphorus content.Arable land and pasture grassland soil available P content was higher than other land use.Natural grassland, pastureland and farmland soil pH value was significantly high In forest grassland and artificial grassland, while the conductivity of the soil was significantly higher than that of the natural grassland, the natural grassland was significantly higher than the forest grassland, artificial grassland and cultivated land.The soil bulk density of forest grassland and pasture grassland was significantly higher than that of natural Grassland and cultivated land, while the natural grassland soil moisture content was significantly higher than other land use patterns, forest grassland soil moisture content is the lowest.