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幼树群落是森林生态系统的重要组成部分,但草兔啃食对幼树的生长和保存产生了负面影响,严重影响林业生态工程建设的质量和效益。围栏是常用的预防兔害的方法,但建造围栏费工、费时,且成本高。另一种选择是利用围栏原理,将幼树与草兔隔开,而不限制其进入林内。本研究采用延安市桥北林区和咸阳市旬邑林区试验材料,验证了用灌木枝条(沙棘、黄刺玫和其他灌木)围罩幼树的效果。试验在当年油松定植时布设,设罩盖与不罩盖处理,5次重复,苗龄3a,各处理300株。2006年5月定植时统计用工量,并对处理区的油松进行测量、标记。处理后2007-2011年5月各调查1次。结果表明,灌木枝条篱笆预防效果优于围墙,2种处理前5a的综合预防效果桥北为57.3%±1.81%和47.1%±2.93%,旬邑为47.6%±2.08%和37.33%±2.34%。灌木篱笆预防有效期在5a以上,围墙有效期为3a。
Saplings are an important part of forest ecosystem. However, grazing on rabbits has a negative impact on the growth and preservation of saplings, seriously affecting the quality and efficiency of forestry ecological projects. Fencing is a commonly used method of preventing catastrophe, but the construction of fences is laborious, time-consuming and costly. Another option is to use the fencing principle to separate saplings from hay rabbits without limiting their entry into the forest. In this study, the experimental materials of Qiaobeilin District of Yan’an City and Xunyi Forest District of Xianyang City were used to verify the effect of shrubs with shrubs (seabuckthorn, yellow thorn and other shrubs). Test in the current year Pinus tabulaeformis layout, with cover and cover is not covered, 5 replicates, seedling age 3a, 300 each treatment. May 2006 when the amount of plantation statistics, and the processing area pine to measure, mark. After the treatment 2007-2011 May each survey 1 time. The results showed that the prevention effect of shrubs and shrubs was better than that of the surrounding walls. The comprehensive prevention effect of the two treatments before treatment was 57.3% ± 1.81% and 47.1% ± 2.93% in North China, 47.6% ± 2.08% and 37.33% ± 2.34% in Xunyi, . Shrub fence protection is valid for more than 5a, the fence is valid for 3a.