矿山露采场边坡生态防护客土有机质和碱解氮变化过程研究  

Study on the Change Process of Soil Organic Matter and Alkaline Nitrogen in the Ecological Protection of Slope in Slope

作　　者：吴亮亮[1] 

机构地区：[1]北京矿冶研究总院,北京100160

出　　处：《世界有色金属》2017年第15期239-241,共3页World Nonferrous Metals

基　　金：国家水体污染控制与治理科技重大专项;丹江口库区小流域特色矿产重金属污染全过程控制关键技术研究与示范课题(2015ZX07205-003)资助

摘　　要：本文以山东省某金矿露天采场边坡客土喷播生态防护试验工程为对象,通过对生态护坡土壤中有机质含量、碱解氮等客土养分元素进行连续4年动态监测,以观察各种养分的衰减恢复规律。结果表明:各种养分均在生态护坡之后的第1年内下降最快,其中有机质在第2年至第4年衰减速度呈现逐渐下降趋势,而碱解氮含量在第3年达到最低,到第4年开始上升。说明有机质、碱解氮等养分呈现出不同的年际变化与季节变化特征。本文的研究成果对我国北方地区矿山边坡生态植被恢复具有重要意义。In this paper, the ecological protection test of the soil in the open field of a gold mine in Shandong Province was carried out for four years of dynamic monitoring of soil organic matter content, To observe the recovery of various nutrients recovery law. The results showed that all kinds of nutrients had the fastest decline in the first year after ecological slope protection, and the decay rate of organic matter in the second year to the fourth year showed a decreasing trend, and the content of alkali-hydrolyzable nitrogen reached the lowest in the third year, 4 years began to rise. Indicating that organic matter, alkali nitrogen and other nutrients show different interannual and seasonal changes. The research results of this paper are of great significance to the restoration of ecological vegetation in the northern slope of China.

关 键 词：露采场 边坡 客土养分 变化过程 

分 类 号：S157[农业科学—土壤学]