Research on Tender Shoot and Leaf Pests Occurrence in Qilian Mountains Nature Reserve
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1.
Management Bureau in Qilian Mountains National Nature Reserve,Zhangye 734000,Gansu,China
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2.
Changlingshan Protection Station of Qilian Mountains Nature Reserve,Gulang 733104,Gansu,China
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3.
Qilian Protection Station of Qilian Mountains Nature Reserve,Wuwei 733000,Gansu,China
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Received Date:
2007-11-14
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Abstract
From 2004 to 2007,under the walk-over survey and sample plot investigation,10 orders 93 families and 679 species of tender shoot and leaf forest insects belonging to 93 families of 10 orders(Acarina included) were found in Qilian Mountains Nature Reserve.The occurring characteristics and area of the main tender shoot and leaf forest pests were identified and the occurrence reasons were analysed.Losing quantity of Picea crassifolia under tender shoot and leaf forest pests damaged were also investigated.The correlation model between pest density,leaf loss rate,fresh weight of damaged branch and growth,quantity loss rate of diameter breast height were set up,and the correlation model between pests rate of P.crassifolia and fresh weight of tender shoot and leaf were also concluded.
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