{"title":"硬木树种年代学的无损采样方法","authors":"C. J. Steenkamp, M. Rooyen, N. Rooyen","doi":"10.1080/10295925.1999.9631235","DOIUrl":null,"url":null,"abstract":"ABSTRACT Core sampling in indigenous hardwood species is not a common practise. A field method LOUS developed to obtain a large enough sample without permanently damaging the trees. A Milwaukee Dymo 2,3 k W electric drill fitted with a 2-speed gearbox and powered by a generator was used. A core drill bit (100 mm x 350 mm) fitted with tungsten tips was designed to fit the electric drill. Core samples of mature trees of unknown age were collected according to height and diameter classes in the Kalahari Gemsbok National Park. This nondestructive method was found to be suitable for collecting large core samples of hardwood species.","PeriodicalId":228456,"journal":{"name":"The Southern African Forestry Journal","volume":"88 1","pages":"0"},"PeriodicalIF":0.0000,"publicationDate":"1999-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"9","resultStr":"{\"title\":\"A non-destructive sampling method for dendrochronology in hardwood species\",\"authors\":\"C. J. Steenkamp, M. Rooyen, N. Rooyen\",\"doi\":\"10.1080/10295925.1999.9631235\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"ABSTRACT Core sampling in indigenous hardwood species is not a common practise. A field method LOUS developed to obtain a large enough sample without permanently damaging the trees. A Milwaukee Dymo 2,3 k W electric drill fitted with a 2-speed gearbox and powered by a generator was used. A core drill bit (100 mm x 350 mm) fitted with tungsten tips was designed to fit the electric drill. Core samples of mature trees of unknown age were collected according to height and diameter classes in the Kalahari Gemsbok National Park. This nondestructive method was found to be suitable for collecting large core samples of hardwood species.\",\"PeriodicalId\":228456,\"journal\":{\"name\":\"The Southern African Forestry Journal\",\"volume\":\"88 1\",\"pages\":\"0\"},\"PeriodicalIF\":0.0000,\"publicationDate\":\"1999-11-01\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"9\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"The Southern African Forestry Journal\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://doi.org/10.1080/10295925.1999.9631235\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"\",\"JCRName\":\"\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"The Southern African Forestry Journal","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1080/10295925.1999.9631235","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 9
摘要
对本土硬木树种进行岩心取样并不常见。LOUS开发了一种实地方法，以获得足够大的样本，而不会对树木造成永久性损害。使用密尔沃基Dymo 2,3 k W电钻，配有2速变速箱，由发电机供电。一个芯钻头(100毫米× 350毫米)配有钨头设计适合电钻。根据卡拉哈里大羚羊国家公园的高度和直径等级收集了年龄不详的成熟树木的核心样本。这种非破坏性的方法被发现适合于收集大的硬木种的核心样品。
A non-destructive sampling method for dendrochronology in hardwood species
ABSTRACT Core sampling in indigenous hardwood species is not a common practise. A field method LOUS developed to obtain a large enough sample without permanently damaging the trees. A Milwaukee Dymo 2,3 k W electric drill fitted with a 2-speed gearbox and powered by a generator was used. A core drill bit (100 mm x 350 mm) fitted with tungsten tips was designed to fit the electric drill. Core samples of mature trees of unknown age were collected according to height and diameter classes in the Kalahari Gemsbok National Park. This nondestructive method was found to be suitable for collecting large core samples of hardwood species.
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