草地退化对土壤理化性质的影响

文章以张家川县不同退化程度草地为研究对象,探讨草地退化对土壤理化性质的影响。结果显示:土壤密度和含水量均随着草地退化程度的增加而下降,有机碳和速效磷则随着草地退化程度增加呈现出先上升后下降的趋势。同时,不同退化程度的草地0~2.5 cm层土壤全氮和全磷含量基本均高于深层,土壤全钾含量在2.5~5 cm层高于其他层。总之,草地退化影响着土壤理化性质。

Effects of Grassland Degradation on Soil Physical and Chemical Properties

This article takes grasslands with different degrees of degradation in Zhangjiachuan County as the research object to explore the effects of grassland degradation on soil physical and chemical properties.The results showed that soil density and water content both decreased with the increase of grassland degradation,while organic carbon and available phosphorus showed a trend of increasing first and then decreasing with the increase of grassland degradation.At the same time,the total nitrogen and total phosphorus content of the 0-2.5 cm layer of grassland with different degrees of degradation is basically higher than that of the deep layer,and the total potassium content of the soil is higher than the other layers in the 2.5-5 cm layer.In short,grassland degradation affects the physical and chemical properties of the soil.