搜索结果: 61-75 共查到“知识库 森林保护学”相关记录550条 . 查询时间(6.362 秒)
笋用林钻蛀性害虫监测及综合治理技术研究与示范
笋用林 钻蛀性害虫 害虫监测 综合治理
2023/2/15
项目针对我国南方地区笋用林钻蛀性害虫危害猖獗的现状,在系统掌握竹林金针虫及竹笋夜蛾等重大害虫发生规律的基础上,研发了高效的性信息素引诱剂和生防菌剂,提出了准确的种群动态监测技术,构建了集成行为调控、生物防治及生境治理等一套绿色、无公害的笋用林钻蛀性害虫综合治理技术,攻克了竹林金针虫等笋期钻蛀性害虫监测难、防效差、有效期短等瓶颈问题,在我国南方笋用竹区推广应用24万亩,增收节支9600万元。
TRL 总有机碳测定仪
TRL 总有机碳测定仪 中国林业科学研究院 森林生态环境与自然保护研究所
2022/6/13
广东省林业科学研究院科研团队:林业生物杀虫剂研究团队(图)
广东林科院 科研团队 林业生物 杀虫剂
2023/5/30
DETERMINING THE LOCATIONS OF POTENTIAL FIREFIGHTING TEAMS BY USING GIS TECHNIQUES
Disaster Management Forest Fires Firefighting Teams GIS Network Analysis Shortest-path
2018/11/8
Wild forest fires are one of the most important disasters that affect the forest ecosystem especially in the regions with arid climate conditions. Besides, forest fires threats human life and results ...
A SPATIAL DISTRIBUTIONMAP OF THE WILDFIRE RISK IN MONGOLIA USING DECISION SUPPORT SYSTEM
MODIS burnt area fire hotspot land cover Multi-Criteria Evaluation Analysis SPI
2018/5/8
Wildfire is a cause of major disturbance to ecosystems and economies throughout the world. Hence, the wildfire is a vital issue of environment for creating natural disaster and socio-economic damage t...
INVESTIGATION OF URBAN GROWTH EFFECTS ON FOREST AREA BY CREATING DIFFERENT SIMULATION SCENARIOS
Simulation Cadastre GIS Urban Growth
2018/4/18
It is necessary to keep urban growth under control according to the understanding of sustainable urban management in rapidly growing cities. In other words, sustainable urban management requires estim...
3-DIMENSIONAL PRE- AND POST-FIRE COMPARISON OF FOREST AREAS
Forest fire VHR satellite imagery orientation image matching DSM generation 3D change detection
2018/5/8
Forest agencies give special attention to forest fires where post-disaster loss can rarely be gauged in a quick and economic way unless an appropriate technology is adopted. Determination of the plani...
基于非稳态法测定木材水分扩散系数
樟子松;非稳态;扩散系数;水分扩散
2018/7/4
锯材在纤维饱和点以下干燥时,水分的迁移过程主要是以非稳态扩散形式进行的,非稳态扩散指木材内部的水流通量和含水率梯度随时间和空间而变化。为了给木材干燥提供依据,采用非稳态法在一定的试验条件下测定了木材的水分扩散系数,探讨了不同材种、干燥介质温度、初始含水率、纹理方向对扩散系数的影响。结果表明:扩散系数与树种有一定的关系,通过比较,樟子松的扩散系数为7.06×10-6 cm2/s,杨树的扩散系数为9....
为了更好地保护林下植物资源,以塞罕坝国家级自然保护区内的5种森林类型为研究对象,运用丰富度、重要值、Simpson指数、均匀度指数等对其木本植物和草本植物物种多样性进行研究。结果表明:在研究区阔叶林的物种丰富度(53±7.000)高于针叶林(34±7.071)。草本植物Simpson和Shannon-Wiener指数在蒙古栎林中最高、白杄林中最低,分别为0.88、2.58及0.62、1.41;木本...
Soil fertility and productivity estimation of Pinus pinaster Aiton reforestations in Central and Northeast Chalcidice in Northern Greece
Degraded ecosystems conifer native vegetation accumulation of nutrients forest floor mineral soil
2018/3/6
Maritime pine (Pinus pinaster Aiton) is a notable fast-growing conifer, native to the Western Mediterranean Basin,
which is considered suitable for reforestations. This tree species was artificially ...
Efficiency of sector sampling for estimating juniper forest attributes vs. fixed area plot
accuracy crown cover density precision plot shape
2018/3/6
Juniper forests grow in mountain areas and many difficulties are encountered in their sampling. Sector sampling as
an unbiased and cost-effective method was tested for the sampling of a 12.5-ha junip...