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首页> 外文期刊>Australian Forestry >Developing methods for pre-harvest inventories which use a harvester as the sampling tool.
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Developing methods for pre-harvest inventories which use a harvester as the sampling tool.

机译：开发使用收获机作为采样工具的收获前库存的方法。

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摘要

Mechanized harvesters, with their measurement technologies and on-board computer power, provide an opportunity to augment, or in some cases replace, traditional pre-harvest inventory systems and to reduce inventory costs. A brief review of the literature on the tree measurement errors associated with pre-harvest inventory systems indicates that they may be no less than errors found in recent studies of harvester measurements in New Zealand, the United States (Oregon) and Canada. Developmental trials of harvester-based inventory systems in Australia indicate that using a harvester to destructively sub-sample could provide reasonable estimates of volume and log grade provided that it has the same built-in assumptions and optimization systems as the harvester undertaking the actual harvest. More than 92% of predicted value recovery could be obtained. Further work is required on topics such as sampling systems, area determination, costs and operating procedures..
机译：机械化收割机及其测量技术和机载计算机功能，为扩大或在某些情况下替代传统的收获前库存系统并降低库存成本提供了机会。对与收获前库存系统相关的树木测量误差的文献进行的简短回顾表明，这些误差可能不小于在新西兰，美国（俄勒冈）和加拿大的近期收割机测量研究中发现的误差。在澳大利亚，以收割机为基础的库存系统的开发试验表明，使用收割机进行破坏性子抽样可以提供合理的数量和原木等级估计，前提是该收割机具有与进行实际收割的收割机相同的内置假设和优化系统。可以获得92％以上的预测值恢复。需要在诸如采样系统，面积确定，成本和操作程序等主题上做进一步的工作。

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