指出构建并科学经营多树种合理配置的防护林体系是控制防护林杨树天牛灾害的根本措施。
Construction and scientific administration of the shelter forest system while rationally allocating different tree species is the fundamental measure to control the PLB disasters.
在对头塘小流域山地系统特征了解的基础上，探讨了该区域山地防护林体系结构的调整、配置方式和营建技术。
Based on the research of mountain system characteristics of Toutang small watershed, the integrated techniques on structure adjustment, allocation model and construction were studied.
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