宁南山区不同恢复措施对土壤环境效应的综合评价

Comprehensive Assessment on Different Restoration Measures to Soil Environmental Effect in Ningnan Hilly Area

通过宁南山区不同恢复措施对土壤环境效应研究的综合评价,结果表明:土壤水分的含量是影响土壤环境状况的最主要因子,其权重值达到了0.202,其次为土壤的毛管孔隙度和土壤有机质的含量,其权重值分别达到0.130、0.112,同时土壤的毛管持水量、土壤碱解氮的含量和土壤脲酶的含量也对土壤环境具有十分重要的作用,其权重值分别达到0.085、0.076及0.063。通过对影响土壤环境的化学性质、物理性质和生物活性的综合评价,88542水平沟整地、鱼鳞坑整地、梯田整地和人工种草不同程度地改善和提高了土壤的环境质量,其排列顺序为88542水平沟>梯田>鱼鳞坑>人工草地>天然草地。

Through the comprehensive appraisement on different restoration measures to soil environmental effect in Ningnan mountain area ,the results show that： the content of soil moisture is the most major factor that affected soil environmental condition,its weight value reaches 0. 202 ,next is the content of soil organic matter and the soil capillary tube porosity, its weight value reaches 0. 130 and 0. 112 respectively, at the same dine, the capillary tube capacity,soil hydrolysis nitrogen content and the content of nitrogen urea enzyme content have also very important role for soil environment, its weight value reaches 0.085, 0.076 and 0.063 respectively. Through the comprehensive appraisement of the chemical property, physical property and biology active that affected the soil environment , the 88542 horizontal ditch, fish-scale pits ,level terrace and the artificial grassland, to some degree, improved and raised the soil environmental quality. Its order of rank is 88542 horizontal ditch 〉 level terrace fish-scale pits 〉 artificial grassland 〉 natural grassland.