造林对铁尾矿地养分含量及物种多样性的影响  

Impacts of Forestation on the Nutrient Content and Biodiversity of Iron Tailing Land

作　　者：许中旗[1] 袁玉欣[1] 李玉灵[1] 徐学华[1] 郭江 刘金柱[3] 

机构地区：[1]河北农业大学,保定071000 [2]迁安市马兰庄镇政府,迁安064400 [3]迁安市林业局,迁安064400

出　　处：《林业科学》2008年第12期151-156,共6页Scientia Silvae Sinicae

基　　金：河北省科技攻关项目“唐山尾矿区生态规划与生态治理模式研究”(2005-2007);国家“十一五”科技支撑项目(2006BAD03A11)

摘　　要：Soil nutrient content and biodiversity were investigated on the iron tailing land to detect impacts of forestation on the nutrient content and biodiversity. The results showed that the iron tailing had much lower contents of organic materials and available N than ordinary soil, and the iron tailing with forestation of Hippophae rhamnoides or Amorpha fruticos had higher contents of the two nutrients than the iron tailing without forestation. The species diversity index (including Simpson index and Shannon-Weiner index) and species richness index of the iron tailing with forestation of Hippophae rhamnoides or Amorpha fruticos were higher than that of the iron tailing without forestation, and the two indexes reached to the level of the nearby natural shrub forest. It was concluded that forestation was able to improve the soil nutrient condition of iron tailing in favor of the settlement of other species invaders, and to increase the species diversity. It would be a feasible way for iron tailings management to introduce the suitable plant species into the droughty and arid iron tailing land to enrich it and raise species diversity gradually.Soil nutrient content and biodiversity were investigated on the iron tailing land to detect impacts of forestation on the nutrient content and biodiversity. The results showed that the iron tailing had much lower contents of organic materials and available N than ordinary soil, and the iron tailing with forestation of Hippophae rharnnoides or Amorpha fruticos had higher contents of the two nutrients than the iron tailing without forestation. The species diversity index （including Simpson index and Shannon-Weiner index） and species richness index of the iron tailing with forestation of Hippophae rhamnoides or Amorpha fruticos were higher than that of the iron tailing without forestation, and the two indexes reached to the level of the nearby natural shrub forest. It was concluded that forestation was able to improve the soil nutrient condition of iron tailing in favor of the settlement of other species invaders, and to increase the species diversity. It would be a feasible way for iron tailings management to introduce the suitable plant species into the droughty and arid iron tailing land to enrich it and raise species diversity gradually.

关 键 词：铁尾矿 生物措施 养分含量 物种多样性 

分 类 号：S714[农业科学—林学]