搜索结果: 106-120 共查到“知识库 树木生理学”相关记录219条 . 查询时间(3.186 秒)
Biochemical Responses in Pines Infected with Bursaphelenchus xylophilus
disease development histological change inhibitory substance pine wilt disease resistance
2009/8/28
Biochemical responses of pines after the infection of the pinewood nematode, Bursaphelenchus xylophilus are reviewed. Biochemical changes, which result in wilting and death of trees, progress with the...
Studies of Tree Architecture:Linking Tree Physiology and Forest Community Dynamics
canopy structure life-history strategy module morphological plasticity succession
2009/8/28
Tree architecture represents various ecological and physiological functions, such as acquisition of light, spatial distribution of vegetative and reproductive organs and pathway for water and nutrient...
Natural Drying of Logging Residue Stems along a Forest Road and on a Paved Landing
drying location logging residue moisture content natural drying woody biomass
2009/8/28
An experiment on the natural drying of Chamaecyparis obtusa logging residue stems was carried out to determine the potential for use of this material as woody biomass (e.g. wood chip bio-fuel). The ex...
Effects of Coniferous Plantation Thinning on Annual Interception Evaporation:Model Verification
coniferous plantations interception evaporation model thinning water resources
2009/8/21
For evaluating the effect of coniferous plantation thinning on water resources, our previous study (Komatsu et al., 2007c) developed a model for predicting changes in annual evapotranspiration caused ...
Use of Topographic Factors for Object-based Forest Type Classification with High Resolution Satellite Imagery
IKONOS object-based forest type classification ridge line thalweg topographic factor
2009/8/18
The classification of forest type by aerial photo interpretation is usually based on color and texture of the image, and also from knowledge of the relationship between vegetation and topography. In t...
Use of Topographic Factors for Object-based Forest Type Classification with High Resolution Satellite Imagery
IKONOS object-based forest type classification ridge line thalweg topographic factor
2009/8/21
The classification of forest type by aerial photo interpretation is usually based on color and texture of the image, and also from knowledge of the relationship between vegetation and topography. In t...
脱锻炼期间白皮松针叶的电阻抗图谱参数和生理指标的相关性
白皮松 脱锻炼 生理指标 电阻抗图谱
2009/8/5
2007年3—5月, 对北京十三陵苗圃的北京蟒山、山西孝义和甘肃两当3个种源的9年生白皮松( Pinus bungeana Zucc. ) 针叶进行了电阻抗图谱( EIS) 分析, 测定其未冷冻针叶的EIS参数, 以及超氧化物歧化酶( SOD) 活性、过氧化物酶( POD) 活性、丙二醛(MDA) 含量、可溶性蛋白质、脯氨酸和干物质含量等生理指标的变化, 比较脱锻炼期间不同种源白皮松针叶的EIS参...
以悬铃木的下胚轴和离体叶片为材料, 研究了基因型、植物生长调节剂、光照条件、外植体部位等因素对其不定芽分化的影响。结果表明: 1) 6-BA与IBA的浓度比对下胚轴不定芽的分化影响较大,以6-BA ∶IBA小于20 ∶1较为合适; 而叶片的不定芽再生受基因型的影响显著, 在4种供试材料中, PH2的再生能力最强, 但0.1～1.0 mg·L-1 TDZ不利于其不定芽再生。2) 黑暗培养对下胚轴的不...
Gas Exchange Analysis for Estimating Net CO2 Fixation Capacity of Mangrove (Rhizophora stylosa) Forest in the Mouth of River Fukido,Ishigaki Island,Japan
CO2 fixation Gas exchange Mangrove Photosynthesis Respiration Temperature modification
2009/7/23
Mangrove trees have been considered to possess a higher carbon fixation capacity than terrestrial trees although a reliable method to estimate their CO2 fixation capacity has not been established. In ...
施肥对毛白杨杂种无性系幼苗生长和光合的影响
毛白杨 苗高 地径 生物量
2010/7/6
采用正交设计L9（34）布置氮、磷、钾3因素3水平的肥料试验，研究氮、磷、钾配施对毛白杨杂种无性系苗木生长及生理特性的影响。结果表明：1) 不同的施肥处理对相同系号的苗木影响不同，而不同系号的苗木对相同施肥处理响应也不一致，因此不仅要找出最佳的氮、磷、钾施肥量及其比例,而且要针对不同的无性系制定不同的施肥配方； 2） 毛白杨杂种无性系的生长和生理特征对于不同施肥配方的响应不完全一致，毛白杨杂种无性...
Temporal and Vertical Variations in Photosynthetic Drivers in Mangrove Canopies,Okinawa,Japan
Air temperature Carbon dioxide Mangrove forest Tidal inundation Vertical and diurnal variations Water vapor
2009/7/21
The mangrove is characterized by the subdaily fluctuations of tidal inundation and, importantly, has many sources of CO2 such as autotrophic and heterotrophic respiration and marine organisms. For the...
橡胶树SAM-SSR体系的优化
橡胶树 SAM-SSR 优化
2009/7/20
以橡胶树品种热研88-13为试材,研究了橡胶树SAM-SSR法中各个过程（酶切、连接、抑制性和预扩增）中各因素对SAM法结果的影响。实验结果表明：5U MseⅠ和5U PstⅠ双酶切1h为最合适酶切浓度、方式和时间; 100~300ng为适宜的DNA模板浓度； 合适的连接温度和时间为16℃连接过夜；连接产物和抑制性PCR产物分别稀释20倍，为抑制性PCR和预扩增PCR的适宜模板浓度。 SAM扩增产...
巴西橡胶树K+通道蛋白HbKCO1的原核表达
巴西橡胶树 K+通道基因 HbKCO1 高效表达
2009/7/20
K+通道蛋白在维持细胞离子平衡等生命活动中发挥重要的作用。利用真核或原核表达系统高效表达K+通道蛋白是深入研究其生化特征及生理功能的基础和前提。本研究在成功克隆巴西橡胶树(Hevea brasiliensis)K+通道蛋白基因cDNA全长的基础上，将HbKCO1 cDNA 编码区插入pET-28a构建原核表达载体pET-28a(+)-HbKCO1，并分别转化大肠杆菌RosettaTM(DE3) p...