陕西科技大学学报2024，Vol.42Issue(6)：24-30,7.
生物结皮对钼尾矿库土壤理化性质和酶活性的影响
Effects of biological crusts on physicochemical properties and enzyme activities of molybdenum tailings ponds
摘要
Abstract
Taking a closed open-pit molybdenum tailings pond in Qinling,Shaanxi province as the object,the effects of biological crusts(alga emoss mixed crusts and moss crusts)on soil physicochemical properties and enzyme activities at different depths(0～2,2～5,5～10 cm)in the natural restoration process of tailings ponds were studied.The results showed that compared with the bare area,the soil bulk density and pH in the crust area decreased,the soil cation exchange capacity,clay content,the contents of organic carbon,available nitrogen,a-vailable phosphorus and available potassium,and the activities of alkaline phosphatase,urease and sucrase increased,and the moss crust showed the higher improvement of soil physico-chemical properties and enzyme activities than that of the algae-moss mixed crusts.With the increase of soil depth,the soil nutrient levels and enzyme activities in the bare area and crust area all showed a decreasing trend.Correlation analysis showed that soil nutrients in the crust area were positively correlated with clay content and enzyme activities,and were negatively correlated with soil pH and bulk density.The above results showed that biological crusts could improve the physicochemical properties and enzyme activities of the soil in the metal tailings pond,and showed the most significant impact on the surface soil.关键词
生物结皮/金属尾矿库/理化性质/酶活性Key words
biological crust/metal tailings pond/physicochemical property/enzymatic activi-ty分类
农业科技引用本文复制引用
张超,强雪怡,贺峰,郭军康..生物结皮对钼尾矿库土壤理化性质和酶活性的影响[J].陕西科技大学学报,2024,42(6):24-30,7.基金项目
陕西省自然科学基金项目(2022JQ-275) （2022JQ-275）
陕西省教育厅科研计划项目(23JK0353) （23JK0353）
