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生态学杂志 ›› 1993, Vol. ›› Issue (5): 9-12.

• 研究报告 • 上一篇    下一篇

改变林分结构提高松林对松毛虫的自控能力

周石涓, 彭建文   

  1. 湖南省林业科学研究所, 长沙410004
  • 收稿日期:1992-03-29 修回日期:1992-06-09 出版日期:1993-10-10

Forest Structural Modification in Improving Self-regulating Capability of Pine Forest Against Dendrolimus Puncts

Zhou Shijuan, Peng Jianwen   

  1. Hunan Institute of forestry science, Changsa 410004
  • Received:1992-03-29 Revised:1992-06-09 Online:1993-10-10

关键词: 有机氯农药, 多氯联苯, 残留, 沉积物, 生态风险

Abstract: This paper describes the significant changes of forest biological structcure,succeeding from sparse purepine forest to pine-shrub mixed forest and to multi-layer pine-broadleaved mixed forest communityduring three decades of closing mountains and rearing forests. The Natural parasiting rates of 1st-3rd generations of Dendrolimus puncts are respectively increased by 41.09-67.49%,which devastates the e-cological conditions for larvae growth and development and greatly reduces the infestation of DendrolimusDuncts. A relatively stable and balanced forest ecosystem is the key for comprehensive cortrol of insect pests.

Key words: OCPs, PCBs, residue, sediment, ecological risk.