皖东丘陵地区退化刺槐人工林自然演替过程的研究

Study on Natural Succession Processof Degraded Robinia pseudoacacia Plantations

本文为探索衰退小老树林和残次林更新复壮的路径、时间与可行性的措施,实现人工林的近自然经营和速生丰产的目标,对退化的人工刺槐林分开展了 10-15年封禁保护措施,并持续调查封禁后试验区内的树种生长、种群数量和林木蓄积量.结果表明,刺槐人工林退化后,可以通过10-15年封禁保护措施,达到自然生态修复的目的.自然演替丰富了树种,增加了种群数量,提升了林木蓄积量,其中朴树、黄连木是值得重点保护和培育的树种.

In this paper,in order to explore ways,time and feasible measures for regenerating and invigorating degraded small-old trees and remnant forests and achieve the goal of close-to-nature management and fast growing and high yields,a 10 to 15-year-long hillclosure measure was adopted for degraded Robinia pseudoacacia plantations and continual surveys were made on the growth of tree species,population quantity and stand volume in the test area after hill-closure.The results showed that a 10 to 15-year-long hillclosure measure could achieve the goal of natural ecological restoration for degraded Robinia pseudoacacia plantations.Natural succession enriches tree species and increases the stand volume,and Celtis sinensis and Pistacia chinensis are the species worthy of key protection and cultivation.