干旱河谷-山地森林交错带不同调控模式下土壤氮库特征的研究

[目的]为了解不同调控模式对交错带土壤养分特征的影响.[方法]以4种典型调控模式为研究对象,比较分析了不同调控模式下土壤全N的特征.[结果]以固N树种刺槐和固N草本紫花苜蓿为主体的调控模式具有相对较高的土壤N贮量.同样地,以固N树种刺槐和速生树种墨西哥杨为主体的调控模式可以很好的组合,表现出较高的土壤N贮量.[结论]以固氮植物为搭配的植被恢复模式可以较好地适应干旱河谷山地森林交错带的生态恢复实践.

Effects of Vegetation Modified Mode on Soil Nitrogen Content Characteristics at Ecotone between Dry Valley and Motone Forest

[Objective] The research aimed to study the effects of the different control modes on soil nutrient characteristics.[Method] Four kinds of typical vegetation modified modes were as materials,and total N was analyzed.[Result] Compared to other models,the one had high storage of soil N,which consisted of Locust and alfalfa that could solid N.Similarly,the combination of Robinia pseudoacacia Linn and Populus L improved N content in the soil.[Conclusion] Vegetation recovery mode mixed with nitrogen-fixing plants could better adapt to the ecological restoration practices in this area.