Robinia pseudoacacia L. has been widely planted worldwide for a variety of purposes, but it is an aggressive invader in many regions. To control invasion by the species, we examined the effectiveness of girdling young trees to ground level to kill trees and preclude sprout development through comparison among girdling, clearcut and control treatments on the Tama river terrace, Tokyo. More than 99% of R. pseudoacacia trees were killed by girdling. The number of sprouts that developed from roots and stumps after girdling was distinctly reduced compared with that observed after clearcutting. We also conducted girdling of young trees of Ailanthus altissima (Mill.) Swingle, which shows similar developmental and ecological characteristics to R. pseudoacacia, and the two species are often sympatric. More than 98% of A. altissima trees were killed, but a higher number of sprouts developed from A. altissima stumps compared with that from R. pseudoacacia stumps. These results indicate that girdling young trees to ground level is an effective method of controlling R. pseudoacacia by killing the stem and precluding sprout development. The girdling method is simple to apply and imposes a low burden on the surrounding environment.

刺槐（Robinia pseudoacacia L.）已在世界范围内广泛用于各种目的，但在许多地区却是侵略性侵略者。为了控制该物种的入侵，我们通过在东京多摩河阶地进行的环剥，清除和控制处理之间的比较，研究了环剥环剥幼树杀死树木和阻止新芽发育的有效性。超过99％的伪阿拉伯树被环抱杀死。与清除后观察到的相比，环剥后从根部和树桩上长出的芽数明显减少。我们还对Ailanthus altissima（Mill。）Swingle的幼树进行了环绕，该幼树显示出与R. pseudoacacia类似的发育和生态特征。，并且这两个物种经常同居。超过98％的A. altissima树被杀死，但是与R. pseudoacacia树桩相比，A。altissima树桩发育出更多芽苗。这些结果表明，环剥幼树到地级控制的有效方法刺槐通过杀死茎和芽排除发展。环剥方法易于应用，并且对周围环境的负担很小。