沿江丘陵区海拔高度与采矿活动对土壤碱解氮含量的影响  

Effects of Altitude and Mining Activities on Alkali-hydrolyzable Nitrogen Content in Low Hill Lands along Yangtze River

作　　者：孙朋[1] 王杰 王合领[1] 李广兵[3] 胡春生[4] 

机构地区：[1]兰州大学,甘肃兰州730000 [2]安徽省六安市田家炳中学,安徽六安237000 [3]西北大学,陕西西安710000 [4]安徽师范大学,安徽芜湖241000

出　　处：《安徽农业科学》2011年第33期20449-20450,20552,共3页Journal of Anhui Agricultural Sciences

基　　金：安徽师范大学国土资源与旅游学院科研团队项目(asdgl0903)

摘　　要：[目的]探讨丘陵海拔变化和采矿活动对沿江丘陵区荻港镇土壤碱解氮含量的的影响。[方法]在对样区样点土壤碱解氮含量分布特征研究的基础上,比较随海拔高度变化和采矿活动的进行所带来的在不同样带土壤碱解氮含量的变化。[结果]随海拔的升高,土壤碱解氮含量降低,并且不同土地利用方式下土壤碱解氮含量存在很大的差异,沿江丘陵区原生土壤碱解氮呈Ⅱ级水平,被开采和废弃的矿区却为Ⅴ级水平。[结论]不同土地利用方式下植被覆盖率与丘陵区土壤养分含量呈正相关。[Objective]The effects of hills elevation changes and mining activities on soil nitrogen content of the alkali-hydrolyzable nitrogen in hilly area of Digang Town were studied.[Method] The distribution of nitrogen was studied in the sample area.Soil alkali-hydrolyzable nitrogen brought by altitude change and mining activities were contrasted.[Result] With the increase of the altitude,soil alkali-hydrolyzable nitrogen content decreased.Under different land utilization,the contents of soil alkali-hydrolyzable nitrogen had big difference.Alkali-hydronitrogen in native soil along hilly area reached Ⅱlevel,and that in mined and abandoned mines reached Ⅴ level.[Conclusion]Under different land utilization,there was a positive relationship between alkali-hydrolyzable nitrogen content and vegetation coverage in hilly area.

关 键 词：沿江丘陵 土壤碱解氮 海拔 矿区 

分 类 号：S151.93[农业科学—土壤学]