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硬木木材未来可用性的林业展望.pdf

上传人: 表表 编号:599453 2025-01-24 31页 2MB

1、Forestry Perspective on the future availability of hardwood timber Silvio SchlerDepartment of Forest Growth,Silviculture and GeneticsInternational Hardwood Conference 2024Vienna8.November 2024Europe Hardwood stocksSource:State of Europes Forests 2020 https:/foresteurope.org/state-of-europes-forests/

2、Europe Hardwood stocksSource:State of Europes Forests 2020 https:/foresteurope.org/state-of-europes-forests/Oak,Beech,Birch 29%of stocks 8 8 180180 millionmillionmmEurope Hardwood stocksSource:State of Europes Forests 2020 https:/foresteurope.org/state-of-europes-forests/Share of hardwood vs.Share o

3、f hardwood vs.softwood also around softwood also around 50%in Central and 50%in Central and Southern Europe Southern Europe But stocks are But stocks are significantly lower in significantly lower in the South!the South!Example Austria Forest AreaForest Area Forest Area DevelopmentDevelopmentTotal c

4、onifersTotal BroadleavesOthersForest Area(in 1000 ha)Inventory periodExample Austria Growing StocksStock development+123 Mill.m=15%+123 Mill.m=15%+70 Mill.m=39%+70 Mill.m=39%Forest stocks(Mill m)InventoryperiodConifersBroadleafesAustrias seedling marketNational FRM StatisticConifer seedlingdecreasin

5、g stronglyBroadleavedseedling increasingcontinuouslyAustrias seedling marketNational FRM StatisticSpruce seedlingdecrease stronglyOther conifers stayconstant(larch)orincrease(silver firand Douglas-fir)Austrias seedling marketNational FRM StatisticOak(Q.robur)seedlings increasemost stronglyIncrease a

6、lso forbeech,other oaksincl.red oakAustrias seedling marketNational FRM StatisticOak(Q.robur)seedlings increasemost stronglyIncrease also forbeech,other oaksincl.red oakGeneral trend across Central Europe!Climate crisis reached European forests!Photo:Hoch,BFWPhoto:Schler,BFWStormBark beetlesWildfire

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欧洲硬木木材的未来可用性是林业界的关注焦点。报告指出,欧洲硬木库存,如橡树、山毛榉和桦木,约占总库存的29%,大约为8180万立方米。在中部和南部欧洲,硬木和软木的份额大约各占一半,但在南部地区的库存显著较低。由于气候变化,硬木生长速度加快,物种分布发生变化,例如挪威云杉。气候变化导致硬木木材产量增加,生长周期缩短,大径材的比例提高,但高质量木材的成本增加,需要更多的林业知识和技术。硬木木材主要用于生物质生产和能源用途,对减缓气候变化有重要作用。面对全球害虫和气候变化的威胁,林业通过选择和繁殖抗病克隆树种,实施了一系列旨在恢复和保护硬木林的举措。这些举措包括在共同花园中种植超过35,000棵苗木,以及建立含有精英克隆材料的种子园。尽管存在挑战,但文章强调了通过科技进步和改变经营方式,硬木林业有望为气候缓解作出更大贡献。
"欧洲硬木资源未来如何?" "气候变化如何影响林业?" "硬木 timber 面临哪些威胁?"
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