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落叶松球蚜生物学和生态学特性研究进展
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作者 张春文 孟昭军 +1 位作者 严善春 迟德富 《西北林学院学报》 CSCD 北大核心 2024年第5期210-218,240,共10页
落叶松球蚜属于半翅目球蚜科,是一种以刺吸方式为害云杉和落叶松顶芽和枝梢的重要害虫。本研究首先概述了落叶松球蚜2个亚种的地理分布、寄主树种、生活史,以及各世代形态特征和生活代史等生物学特性;其次,对其空间分布型、生态位分布... 落叶松球蚜属于半翅目球蚜科,是一种以刺吸方式为害云杉和落叶松顶芽和枝梢的重要害虫。本研究首先概述了落叶松球蚜2个亚种的地理分布、寄主树种、生活史,以及各世代形态特征和生活代史等生物学特性;其次,对其空间分布型、生态位分布及各种生态因子对个体发育、种群发生和分布等生态学特性进行了总结。在综述已有研究基础上,提出未来4个主要研究方向:深入研究落叶松球蚜及与其基因型相同的球蚜物种间不同的地理种群遗传机制;深入研究落叶松球蚜与寄主植物、天敌昆虫之间的相互作用机制;建立落叶松球蚜种群的遥感监测及长期的预测预报体系;再次强调多树种混交林对实现落叶松球蚜绿色防控的重要性。研究旨在为落叶松球蚜的预测预报和绿色防控提供理论基础,并提出了一些关键的科学问题。 展开更多
关键词 落叶松球蚜 球蚜科 全周期型 寄主交替 云杉 落叶松
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Environmental impact evaluation for high-speed railway 被引量:4
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作者 宋晓东 付延冰 +1 位作者 陈治亚 刘恒斌 《Journal of Central South University》 SCIE EI CAS 2014年第6期2366-2371,共6页
Environmental impact evaluation system boundary of high-speed railway was defined based on the total life cycle theory,and the index system to evaluate the environmental impact of high-speed railway was established wi... Environmental impact evaluation system boundary of high-speed railway was defined based on the total life cycle theory,and the index system to evaluate the environmental impact of high-speed railway was established with the fuzzy analytic hierarchy method,and the matter-element evaluation model was established on the basis of the extension theory.By calculating its comprehensive interrelatedness,the evaluation rank of environment impacts of high-speed railway was determined.The numerical example shows that the model has vast prospect,which can not only expand the application areas of extension theory,but also change the traditional evaluation methods and provide new ideas and means for environmental impact evaluation of high-speed railway. 展开更多
关键词 high-speed railway life cycle environmental impact EVALUATION MATTER-ELEMENT
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