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红松成过熟林伐区调查设计中资源误差的分析 被引量:3
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作者 高敬武 罗晓春 《森林工程》 2000年第3期3-4,共2页
天然红松成过熟林伐区设计与实际商品出材量存在着误差.一元立木材积表超过20.635、红松误差为15.68%。实际超采伐量的设计资源消耗量大25%-50%。
关键词 成过熟林 伐区调查 资源误差 红松
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HIGH-RESOLUTION NUMERICAL SIMULATION OF WIND ENERGY RESOURCE IN HAINAN PROVINCE AND ITS OFFSHORE WATERS
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作者 邢旭煌 朱蓉 +1 位作者 翟盘茂 俞卫 《Journal of Tropical Meteorology》 SCIE 2010年第3期292-298,共7页
With high resolution (1 kin), the distribution of wind energy resources in Hainan province and over its offshore waters is numerically simulated by using the Wind Energy Simulation Toolkit (WEST) model developed b... With high resolution (1 kin), the distribution of wind energy resources in Hainan province and over its offshore waters is numerically simulated by using the Wind Energy Simulation Toolkit (WEST) model developed by Meteorological Research Branch of Environment Canada. Compared with observations from eight coastal anemometric towers and 18 existing stations in the province, the simulations show good reproduction of the real distribution of wind resources in Hainan and over its offshore waters, with the relative error of annual mean wind speed being no more than 9% at the 70-m level. Moreover, based on the simulated results of WEST grids that are closest to where the eight wind towers are located, the annual mean wind speeds are further estimated by using the Danish software Wasp (Wind Atlas Analysis and Application Program). The estimated results are then compared with the observations from the towers. It shows that the relative error is also less than 9%. Therefore, WEST and WEST+WAsP will be useful tools for the assessment of wind energy resources in high resolution and selection of wind farm sites in Hainan province and over its offshore waters. 展开更多
关键词 wind energy resources Wind Energy Simulation Toolkit (WEST) wind speed high resolution numerical simulation
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北衙铁金矿KT52矿体探采对比分析
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作者 邹启平 张加旺 倪明洪 《云南地质》 2021年第4期506-513,共8页
本文以北衙铁金矿KT52矿体地质勘探、二次圈定资料与开采后完整矿体地质资料,利用矿体资源量误差、面积误差、面积重合率、形态歪曲率等参数,进行定性定量对比研究,分析探采差异原因及地质勘探方法的合理性;明确了原地质勘探对矿体形态... 本文以北衙铁金矿KT52矿体地质勘探、二次圈定资料与开采后完整矿体地质资料,利用矿体资源量误差、面积误差、面积重合率、形态歪曲率等参数,进行定性定量对比研究,分析探采差异原因及地质勘探方法的合理性;明确了原地质勘探对矿体形态和规模的认识和控制程度及资源量估算误差率,为地质条件类似矿床勘查、设计及开采提供借鉴作用。 展开更多
关键词 探采对比 形态误差 资源误差 KT52矿体铁金矿床 云南北衙
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