Changes of Soil Quality Under Different Forest Ages of Seabuckthorn Forest in Open-pit Coal Mine Dump
Taking the soil of different forest ages of seabuckthorn forest in the dump of Manlailiang Open-pit Coal Mine in Ordos as the test material,and the non-vegetation sample plot in the dump as the control group,the soil of seabuckthorn under different forest ages was sampled by time instead of space.The soil bulk density,soil moisture content,soil porosity,organic matter,soil pH,available nitrogen,available phosphorus and available potassium were compared and analyzed.The effects of different forest ages of seabuckthorn on soil quality were studied,in order to provide reference for vegetation restoration in open-pit coal mine dumping sites.The results showed that there were differences in soil physical properties in different seabuckthorn plots,among which soil moisture content and soil porosity changed significantly,increasing by 1.658％and 4.14％respectively.In general,the soil chemical properties of sea buckthorn were improved by planting sea buckthorn.Among them,available nitrogen and available potassium were more obvious,which increased by 8.36 mg·kg-1 and 11.93 mg·kg-1,respectively.According to the calculation of soil quality index(SQI),the soil quality increased by 0.05 with the increase of seabuckthorn forest age,and the soil quality was effectively improved to a certain extent.
万方数据
维普
