搜索结果: 76-90 共查到“防护林学”相关记录159条 . 查询时间(0.624 秒)
印度治沙经验及其对中国的启示
印度 荒漠化防治 经验 启示
2016/12/23
总结印度荒漠化治理经验，为中国相关工作提供借鉴。[方法] 通过分析印度荒漠化成因及其影响，并从机构、政策、技术层面对其治理具体措施与成效进行总结。[结果] 印度治沙的基本经验是建立以政府为主的管理机构，确定行动方案，参与国际合作，加强荒漠化监测，开发治沙技术，重视资源管理，改进耕种技术。[结论] 印度治沙经验对中国荒漠化防治工作的主要启示是完善国家防治机构，加强防治能力建设，充分发挥科技的引领和支...
第十届中国科学院“百人学者论坛”学术年会在广州召开（图）
第十届 中国科学院百人学者论坛 学术年会 广州
2015/11/17
2015年11月9-15日，第十届中国科学院“百人学者论坛”学术年会在广州隆重召开。此次会议由中国科学院“百人学者论坛”理事会、中国科学院人事局和中国科学院研究生院共同主办，中国科学院华南植物园承办。来自全国各地中国科学院各研究所的80余位百人和青千学者和青年科学家齐聚一堂，展示最新研究成果，共同研讨领域研究新热点和发展态势。
The occurrence of early-arriving saproxylic beetles on Scots pine logging residues generated by thinning
bark- and wood-boring beetle branch felling date pest Pinus sylvestris treetop
2015/8/27
The occurrences of early-arriving saproxylic beetles were examined on 1,200 fragments of Scots pine (Pinus sylvestris L.) logging residues generated by thinning in a single stand in the Drahanská High...
航空护林学术研讨会在昆明召开
航空护林 研讨会
2015/7/15
由中国林学会森林防火专业委员会和中国林科院森林生态环境与保护研究所、国家林业局南方航空护林总站、国家林业局北方航空护林总站共同举办的航空护林学术研讨会于2015年6月29日在云南省昆明市召开。云南省张祖林副省长出席并致辞，国家林业局森林公安局、南方航空护林总站、北方航空护林总站、森林武警指挥部、中国林学会、中国消防协会等有关单位领导出席研讨会。100余名来自科研、教学和防火第一线的专家、学者出席会...
明确边坡生态防护工程生境基材的磷素保持能力，为优化基材配方提供依据。［方法］ 以向家坝水电站边坡生态防护工程生境基材为对象，采用恒温振荡培养法进行吸附和解吸试验，比较不同基材的磷素吸附和解吸能力，并用因子分析法比较基材磷素的流失风险。［结果］ 最大吸附量（Qm）、最大缓冲容量（MBC）和磷吸持指数（PSI）3个指标均显示，5种基材的固磷能力为：天然次生林 > 客土喷播 > 厚层基材 > 框格梁覆土...
河南农业大学“国家林业局农田防护林工程技术研究中心”获得批准
河南农业大学 农田防护林工程技术
2015/5/29
近日，依托我校建立的“国家林业局农田防护林工程技术研究中心”获得国家林业局批准。该中心将紧密围绕农田防护林建设过程中的重大科技和社会需求，为促进农田防护林的生态功能的进一步发挥以及提高其可持续经营水平开展工作。
Identification of agricultural soils suitable for afforestation in the Czech Republic using a soil database
soil survey Evaluated Soil Ecological Units
2015/5/18
Afforestation of agricultural lands may be a positive action in many cases. Especially, it is a beneficial
feature for waterlogged soils, stony soils or for soils which are less fertile for any othe...
Analysis of operational approach during forest transformation in Klokočná Range, Central Bohemia
stand transformation harvest diameter distribution
2015/5/18
In this study immediate results concerning the effectiveness of the applied silvicultural measures in the
course of forest transformation were analysed.
Review of historical outbreaks of the nun moth (Lymantria monacha) with respect to host tree species
Czech Republic polyphagy conifers broadleaves
2015/5/18
Lymantria monacha (L.) is a polyphagous pest feeding on coniferous and deciduous trees in Eurasia. The
review presents an exhaustive overview of the nun moth outbreaks in Czech forests from 1784 to ...
The impacts of ground-based logging equipment on forest soil
dry bulk density moisture content
2015/5/5
Soil properties can be affected by heavy equipment used for skidding but these impacts vary greatly
with site conditions and operational practices. We assessed the effects of ground-based skidding o...
研究外掺2种植物纤维对冻融作用下植被混凝土抗剪强度的影响,为植被混凝土生态防护技术在高寒地区的应用提供科学依据。[方法] 参考相关标准(GB/T50082-2009)中的慢冻法,采用2因素3水平全面交叉试验开展研究。[结果] 未掺植物纤维的植被混凝土,冻融后黏聚力显著减小,内摩擦角变化不明显。掺入植物纤维可使经受5次冻融循环作用后植被混凝土的内摩擦角平均增加5°左右,并且随植物纤维掺量的增加,内摩...
Application of image analysis in plant pathology and forest protection
image analysis methods plant pathology
2015/3/3
By means of computer-based image analysis it was possible to accelerate and automate a number of
originally time-consuming activities in plant pathology and forest protection. In 1997–2005, image an...
The occurrence of endophytic fungus Phomopsis oblonga on elms in the area of southern Bohemia
elm Ulmus Dutch Elm Disease Ophiostoma ulmi
2015/3/3
The health condition of the population of elms in the region of southern Bohemia was studied from the
viewpoint of their decline, the occurrence of Dutch Elm Disease (DED) and the presence of other ...
开展太湖湖滨防护林建设对区域生态改善效应研究,为今后太湖防护林建设及生态效益改善提供技术支持. [方法] 选择太湖宜兴地区太湖湖滨防护林,分别探讨防护林地和农田中土壤状况、植物多样性变化和地表径流特征,分析不同林地土壤性质差异及相应的生物多样性变化. [结果] 通过湖滨防护林的建设能有效改善土壤渗透性,增强土壤持水能力,减少地表径流,增加植物物种多样性. [结论] 湖滨防护林建设能改善土壤状况,有...
Effects of light exposure in freezing temperatures on winter damage to foliage of Norway spruce container seedlings in mid and late winter:Pilot experiments in an open field
cell damage frost irradiance needle colour Picea abies
2015/5/6
Norway spruce (Picea abies (L.) Karst.) is widely planted for reforestation in the boreal zone. It is sensitive to frost and high irradiance during the growing season, and also to winter damage, which...