铁矸石山生态修复初期土壤主要特征分析

研究了鞍山地区铁矸石山生态修复初期土壤主要特征及其变化规律。结果表明:与裸露矸石山相比,经生态修复的矸石山土壤物理性质和化学性质均有不同程度的改善。经过生态修复的铁矸石山土壤容重和非毛管孔隙度减小、毛管孔隙度增大,土壤持水能力提高,同一时期土壤水分垂直变化规律基本一致,自上而下呈减少趋势,且阴坡>阳坡>裸露矸石山;土壤有机质、氮、磷、钾含量,相比裸露矸石山均有所提高,且阴坡好于阳坡好于裸露矸石山,阴坡和裸露矸石呈中性,阳坡矸石略呈酸性。

Analysis of theMain Characteristics of the Soil in the WasteIron Ecological Restoration in the Early

In the study which is on the main characteristics of the soil and their changing regulations in the Anshan Iron Waste ecological restoration in the early period,the result is as followed,compared with the bare Waste,the physical properties and chemical properties of Waste iron soil have different degree of improvement after the ecological restoration.For example,soil bulk density and non-capillary porosity decreased,capillary porosity increased and soil water holding capacity increased.soil moisture during the same period of vertical change regulations are basically the same,which are decreasing from top to bottom,and overcast slope > Sunny slope > bare Waste;Compared to the bare Waste,soil organic matter,nitrogen,phosphorus,potassium have improved and overcast slope better than sunny slope and the bare Waste and sunny slope better than the bare Waste;overcast slope and waste rock exposed slope are neutral,Sunny slope waste rock is slightly acidic.