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林海妹 《世界热带农业信息》2014,(4):6-6
<正>由于被晒伤,澳大利亚西澳大利亚州南部的芒果种植者损失了近1/4的芒果。在遭受42℃的高温天气对芒果灼伤之前,珀斯北部的芒果种植园果树生长情况一直良好。南部芒果种植者协会主席Tony Maddern称他才刚开始采摘芒果,估计高温天气导致损失4万美元。尽管芒果损失重大,Maddern先生表示,芒果于本周采收上市后,他希望每托盘芒果约有45美元的好价格。每托盘芒果大约7 kg,约16个。 相似文献
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Forest fires in mountainous areas can cause severe deforestation which can potentially trigger secondary natural hazards like debris falls and avalanches.We documented an extreme case study for the range of possible post-fire land cover(LC)dynamics.We investigated a 15-ha,steep(10°-65°)burnt slope in Styria(Austria)at elevation of 760-1130m,which burned in 1946 and has not fully recovered to date.Seven8-class legend LC maps were produced(1954,1966,1973,1982,1998,2004,2009)and integrated in a vector-based GIS,mainly by on-screen interpretation of aerial photos.Our aim was to clarify how post-wildfire LC dynamics take place on a severely damaged,steep slope and to give a basic projection of the future vegetation recovery process.The pre-fire Pinus sylvestris stands have been mainly replaced by Picea abies and Larix decidua.Regeneration proceeded mainly from the base of the slope upwards.All tree species together still cover no more than 40%of the slope after more than 60 years of recovery,while grassland communities and rock/debris areas have expanded.Multitemporal analysis showed a slow but steady increase in woodland cover.Degraded rock/debris areas,however,expanded as well because soil erosion and related debris flows remained active.Slope angle(with a threshold value of approx.35-40°)seemed to control whether erosion or regeneration prevailed.According to a simple extrapolation,the slope will not reach its former condition before 2070.This extreme disturbance window of more than 120 years is owed to the steepness of the slope and to the shallow soils on dolomitic bedrock that were severely damaged by the fire.The neglect of any game fencing is a further factor slowing regeneration. 相似文献
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随着州政府延长转基因禁令,澳大利亚塔斯马尼亚州将至少再有5年时间不会出现转基因植物。众议院提交的草案已经获得国家农业主体、蜜蜂饲养者和绿色组织的支持。初级产业部部长JeremyRockliff说该法案考虑了去年部门审查的调查结果,包括了160项公众意见和新市场调查。Rockliff先生表示,延期法令将会在2019年到期时被再次审议。 相似文献
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青龙虾(Gherax tenuimanus)原产于澳大利亚联邦西澳大利亚州西南部的淡水溪流中。是世界上第三大的淡水虾。常见的个体有0.1~0.5公斤重,一般可长到2公斤左右。曾记载过最大的一尾为2.72公斤,全长280毫米,已制成标本保存于英国博物馆。 相似文献
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澳大利亚:澳大利亚高等级的锯材原木通常用来制造建筑和家具行业所需要的实木板材,但是马来西亚的大安单板厂将这种木材削成单板来生产胶合板。 相似文献