By Hans G. Schabel
Леса Восточной Африки, наиболее богатые по биологическому разнообразию, находятся под воздействием различных нарушений, в том числе со стороны насекомых. Книга, сфокусированная на лесных насекомых Западной Африки, обобщает сведения, опубликованные за a hundred thirty five лет в научной и исторической литературе, до и после колониальной эры. Она представляет собой обзор важнейших вредителей древесных пород и их антагонистов. Так же рассматриваются вопросы социальной и экономической значимости таких насекомых, как эндемики, виды, представляющие интерес для коллекционирования, опылители, производители шелка. Книга предназначена лесоведам, энтомологам, специалистам по охране природы, организаторам сафари и всем, кто интересуется естественной историей этого удивительного региона.
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Additional resources for Forest Entomology in East Africa: Forest Insects of Tanzania
Sample text
Agriculture Handbook no. 710. Washington, DC: US Department of Agriculture Forest Service. ) (1984) Forestry Handbook. New York: John Wiley. Zwolinski JB, Donald DGM, and Van Laar A (1992) Regeneration procedures of Pinus radiata in the Southern Cape Province. I: Modification of soil physical properties. South African Journal of Forestry 167: 1–8. Zwolinski JB, Donald DGM, Van Laar A, and Groenewald WH (1992) Regeneration procedures of Pinus radiata in the Southern Cape Province. V: Post planting mortality and growth of trees in response to the experimental treatments and planting site environment.
It currently contains information for 411 species, mainly of Australian origin, and for 303 sites, mainly in Australia. It includes information on a total of 90 factors relating to site characteristics, management history, tree performance, botanical identity, and project description. Though this information is useful for assisting species selection, the system contains only raw data for specific sites. It does not contain summary information on the characteristics and requirements of particular species.
In this sense, site preparation may include operations prior to ground preparation. Thus, site preparation includes clearing, soil cultivation, and also protection operations, such as management of pre-existing vegetation especially weeds, fencing and other animal control systems, protection of plants against frost and wind, etc. Conversely, ground preparation as a normal step leading to plant establishment is concerned with soil cultivation, including either drainage or water storage according to site conditions.