共查询到20条相似文献,搜索用时 7 毫秒
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回顾了新中国森林防火事业所取得的成就,认为新时期森林防火发展机遇与挑战并存,提出新形势森林防火工作任重道远,需进一步健全森林防火法规制度体系;加快建立扑救指挥系统,完善应急反应机制;进一步加强科学防火工作;大力加强森林消防队伍建设和培训工作。 相似文献
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为切实做好2010年秋冬季森林防火工作,有效保护森林资源,辽宁省桓仁满族自治县森林防火指挥部于2010年8月3日至11月3日,对全县森林消防队员分期分批进行培训,全县共有800余名森林消防队员参加了培训。 相似文献
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森林防火办公室组织有关单位进行防火培训北京市顺义区林业局副局长、区防火办主任刘明忠夜察消防队森林防火指挥部组织有关领导进行防火拉练检查北京市顺义森林防火工作一览——工作扎实 保障有力@王素芹
@张志和~~ 相似文献
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结合<森林防火员国家职业标准(试行)>,分析了初级森林防火员的职业要求、能力要求,设计了初级森林防火员培训的理论、实践课时表,对初级森林防火员的培训课程、实践课程及综合演练等方面的教学方法进行了讨论. 相似文献
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森林可燃物是森林燃烧的物质基础,开展森林可燃物的研究是森林火灾预防的基础性工作。新形势下的森林可燃物研究对我国现代森林防火工作具有十分重要的意义。综述了国内外森林可燃物研究现状,并以此为基础,提出了新形势下我国森林防火工作的对策及森林火灾灾后管理的策略:1)在进行森林防火工作时,可通过调整林分结构,加强生物防火工程建设,并采用先进的生物防火技术,对可燃物进行科学管理;2)对农、林、牧业进行产业结构调整,降低森林燃烧性;3)推广使用清洁的生物能源,减少森林可燃物积累。研究结果可为提高我国森林防火科学化管理水平提供参考。 相似文献
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这次全省森林防火业务培训班丰富,特点鲜明,在同志们的共同努力下,取得了令人满意的成效。此次培训班的收获主要体现在"三个进一步明确、两个提升、和一个拓宽"。"三个进一步明确"。一是进一步明确了新形势下实施森林防火培训的意义、目标和任务。二是进一步明确了今后森林防火培训工作的发展趋势和努力方向。森林防火培训发展趋势究竟应该是什么,重点应该解决哪些问题,这次我们主要是三个问题:指挥的问题,安全避险的问题, 相似文献
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We present a new approach for selecting seed sources of Eucalyptus to be grown on saline land. We evaluated our method using 22 seed sources, 11 tree-form species and 11 mallee-form species.
We found that the commonly used strategy of selecting seed sources on the basis of average productivity was inappropriate,
as average productivity was poorly correlated with the relationship between productivity and salinity that was actually observed.
Using our new approach, we categorized seed sources as salt-sensitive or salt-tolerant based on the strength of the observed
relationship between salinity and productivity. Seed sources defined as sensitive were associated with relatively large (−24.8
to −64.2%) productivity losses, while the changes in productivity for tolerant seed sources ranged from −17.1 to 10.5%. On
average, reductions in height due to increased salinity were about 30% greater for sensitive seed sources than tolerant ones,
although the effect was smaller for mallee-form and greater for tree-form seed sources. The difference between sensitive and
tolerant seed sources was similar after 1, 2 and 4 years of growth. 相似文献
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王珊子 《绿色中国(A版)》2006,(15):66-68
“民以食为天”,“人命关天”,这两句古话阐明了食品安全无以复加的重要性。实际上,食品安全的重要性还远不止于此,这个问题不仅关系到人的健康和生命,而且关系到经济发展、社会稳定,乃至公民对整个社会和政府的信心。 相似文献
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王珊子 《绿色中国(综合版)》2006,(8):66-68
“民以食为天”,“人命关天”,这两句古话阐明了食品安全无以复加的重要性。实际上,食品安全的重要性还远不止于此,这个问题不仅关系到人的健康和生命,而且关系到经济发展、社会稳定,乃至公民对整个社会和政府的信心。[编者按] 相似文献
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《Journal of Sustainable Forestry》2013,32(3-4):307-316
Concerns for maintaining biodiversity have led to the adoption of ecosystem management as the paradigm for federal land management. This approach will identify desired future conditions as the goal for management, based on ecological objectives for a given landscape. Some management efforts attempt to identify desired future conditions based on existing successional stages as defined by a classification of overstory vegetation types. Such an approach ignores most of the underlying ecological parameters of the landscape, and is inadequate for identifying past disturbance regimes and future successional pathways. An assessment of desired future conditions based on an ecological classification system is essential to overcome these inadequacies. The strategy proposed in this paper uses an appropriate ecological land classification, based on either ecological land types or habitat types, included in a broader hierarchical classification system. It also uses a vegetation map of existing overstory vegetation. These two maps are overlaid to generate polygons of ecological units that can then be used to create an ecosystem diversity matrix. Each polygon (stand) can be evaluated as to its composition and structure relative to its possible placement within the ecosystem diversity matrix through comparisons with historical ranges of variability. The overall ecosystem diversity matrix can then be examined in terms of the distribution of successional stages within each habitat type or ecological land type. The goal should be to maintain at least adequate ecological representation of all successional stages within each habitat type that occurred historically, based on past disturbance regimes. Adequate ecological representation is defined as sufficient size and distribution of inherent ecosystems to maintain viable populations of all endemic species dependent on these ecosystems. This approach can maintain and enhance regional biodiversity, but also maintain flexibility in land management options. 相似文献
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12个桃品种的花芽休眠需冷量和开花需热量 总被引:3,自引:0,他引:3
在浙西南地区研究12个桃品种花芽休眠需冷量和开花需热量生态指标.犹他模型测定结果显示:12个桃品种中,花芽休眠需冷量低的品种为春蜜、超红、中油11号、中油7号、中油4号,约为550~650 cu;其次是丽油5号、仓方早生、燕红、丽油3号、早凤凰,约为650~ 800 cu;需冷量高的品种为新川中岛和赤月,约为900~ 950cu.同一地区不同品种需热量差异较大,同一品种年际间差异相对较小.以生长度天模型试验结果表明:开花需热量低的品种为赤月和丽油3号,大约400 ~ 500 d·℃;其次是新川中岛,大约500~600 d·℃;春蜜、丽油5号、早凤凰、中油4号、中油7号、仓方早生和燕红大约600 ~ 700 d·℃;需热量较高的是中油11号和超红,约为700~800 d·℃.12个桃品种花芽休眠需冷量与开花需热量之间呈乘幂函数曲线显著负相关. 相似文献