土石山区植被恢复种源补充密度确定新方法初探

摘要

探讨了土石山区植被恢复人工补充种源密度的确定依据、方法和植被修复效果。结果表明,针叶树补植密度控制在500株/hm2～800株/hm2,柠条灌木林补植密度控制在1 000株/hm2～1 500株/hm2;流域植被补充种源后平均盖度达71.5%,年均净增8.15%.其中人工补充种源新增盖度10.6%,年均增加2.65%.%Determination basis, method and effect of artificial seed supplement in vegetation restoration were introduced. The results showed that replanting number of coniferous trees was 500/hm2 to 800/hm2, and replauting number of shrubs was 2 000/hm2 to 2 500/hm2 ; vegetation coverage was 71.5% after replanting with increase of 8% a year and vegetation coverage of plantation forest increased 10. 6% with increase of 2.65% a year.