摘要
针对近年来国内外杨树人工林生态退化和恢复领域的研究,归纳了杨树人工林的生态退化的主要表现在土壤退化、生产力下降和生物多样性减弱3个方面,分析了生态退化的主要原因为病虫害爆发、人类不合理活动和杨树的化感作用;提出了杨树人工林的生态恢复的具体措施:必须采取科学的技术对策,加强杨树生态系统的管理、保护生物多样性和调控林地生产力,从而使退化的杨树人工林恢复良性的生态循环,实现人工林的可持续经营。为杨树人工林的持续经营及客观、科学地评价其生态环境问题提供了一定依据。
This paper studies researches on poplar plantation and restoration at home and abroad in recent years, summarizes the main performance of ecological degradation poplar plantations: ecological degradation of poplar plantation is mainly manifested in three aspects: declining soil degradation, drop in productivity and biodiversity. The main reasons leading to ecological degradation are the outbreak of diseases and insect pests, unreasonable human activities and allelopathy of poplar. The authors proposed specific measures to restore ecological poplar plantation and scientific technical countermeasures to realize the ecological restoration of poplar plantation. It is very important to strengthen the management of poplar ecological system, protect biodiversity and regulate forest land productivity to recover ecological benign cycle from degradation of poplar plantation and realize a sustainable management of plantation. This paper can provide the theoretic basis for continuing operations of poplar plantation and scientific evaluation of the ecological environment problems.
出处
《中国农学通报》
2015年第31期1-6,共6页
Chinese Agricultural Science Bulletin
基金
河南省教育厅自然科学研究重点项目"栎空腔瘿蜂生物生态学特性及灾变规律研究"(13A210010)
安阳工学院校基金项目"栎空腔瘿蜂种群动态及灾变规律研究"(YJJ2014006)
关键词
杨树人工林
生态退化
生态恢复
化感作用
生态适应性
poplar plantation
ecological degradation
ecological restoration
allelopathy
ecological adaptability