叶面积/边材面积,ratio of leaf area to sapwood area
1)ratio of leaf area to sapwood area叶面积/边材面积
bining with the tree morphological features and sap flux density,the whole-tree transpiration,canopy stomatal conductance,andratio of leaf area to sapwood area were calculated by simplified Whitehead and Jarvis equation,and the effects of tree height on these three parameters were analyzed.结合树木的形态特征、液流密度和简化的Whitehead&Jarvis公式,分别计算了整树蒸腾、冠层气孔导度和叶面积/边材面积比值,分析了树高对整树蒸腾、冠层气孔导度和叶面积/边材面积比值的影响。
2)Leaf/sapwood area叶/边材面积比
3)Sapwood area边材面积
1.In this article, sapwood area is used as a scalar to extrapolate the stand water use from whole tree water use measured by heat pulse velocity recorder(HPVR).该文在单木液流测定的基础上 ,采用边材面积作为纯量 ,对京北山区水源保护林的主要树种油松、刺槐林进行由单木到林分耗水的推算 。
4)specific leaf area比叶面积
1.Relation betweenspecific leaf areas and leaf nutritent contents of plants growing on slopelands with different farming-abandoned periods in the Loess Plateau;黄土高原不同退耕年限坡地植物比叶面积与养分含量的关系
2.Photosynthesis in relation to leaf nitrogen,phosphorus andspecific leaf area of seedlings and saplings in tropical montane rain forest of Hainan Island,South China;海南岛热带山地雨林幼苗幼树光合与叶氮、叶磷及比叶面积的关系
3.Concentrations of PAHs in leaves of six dominant species in the Pearl River Delta of South China were determined with gas chromatography and mass spectrometry(GC-MS),and synchronously leaf-lipid contents,leaf areas,specific leaf areas(SLA) were measured.应用气相色谱-质谱联用方法测定了珠江三角洲地区6种主要树种叶片多环芳烃(PAHs)的含量,并对相应的叶脂含量、叶面积、比叶面积进行了测定,探讨了叶片PAHs含量特征和种间差异的影响因素。
英文短句/例句
1.Leaf Area Index and Specific Leaf Area of Natural Poplars in Ergis Basin额尔齐斯河天然杨树林叶面积指数及比叶面积的研究
2.CHANGES IN [N], [P] AND SPECIFIC LEAF AREA OF GREEN LEAVES OF LEYMUS CHINENSIS ALONG NITROGEN, PHOSPHORUS AND WATER GRADIENTS羊草绿叶氮、磷浓度和比叶面积沿氮、磷和水分梯度的变化
3.The Study of Varation in Seed Mass and SLA on the Eastern Qinghai-Tibet Plateau青藏高原东部植物种子大小和比叶面积变异的研究
4.The response of SLA and photosynthesis of Medicago sativa and Cichorium intybus to different rates of super absorbent polymer紫花苜蓿和菊苣比叶面积和光合特性对不同用量保水剂的响应
5.Relationships among Water Use Efficiency,Carbon Isotope Discrimination,and Specific Leaf Area in Maize玉米水分利用效率、碳稳定同位素判别值和比叶面积之间的关系
prasion on the Determination Methods of Leaf Area of Cornaceae山茱萸科植物叶面积测定方法的比较
7.area of blade sectio叶片截面面积桨叶截面面积
8.The Comparison of Two Methods of Measuring Leaf Area Index of Natural Secondary Forest两种测定天然次生林叶面积指数方法的比较
9.maximum blade thickness ratio桨叶截面最大叶厚比
10.impeller eye area叶轮中心进口能道面积
11.acid volume to coupon area ratio酸容积与试件面积比
12.Any leaf tobacco purchasing contract shall specify the agreed area for leaf tobacco plantation.烟叶收购合同应当约定烟叶种植面积。
13.Effects of sulfur on leaf area and chlorophyll of soybean硫对大豆叶面积和叶绿素含量的影响
14.The dry matter weight per unit, dry matter accumulation per stem( panicle), and transportation of leaf apparent matter was more than the high yield crop management.与传统高产栽培管理比较,单位面积干物重、茎物质积累量和叶片的物质表观转出量高。
15.The thy matter weight per unit, thy matter accumulation per stem (panicle), and transportation of leaf apparent matter was more than the high yield crop management.与传统高产栽培管理比较，单位面积干物重、单茎物质积累量和叶片的物质表观转出量高。
16.Cauchy-Stieltjes Integrals and Areally Mean p-Valent Functions;Cauchy-Stieltjes积分与面积平均p叶函数
17.Advance in Ground-based LAI Measurement Methods叶面积指数地面测量方法的研究进展
18.coastline/surface area ratio海岸线/陆地面积比例
相关短句/例句
Leaf/sapwood area叶/边材面积比
3)Sapwood area边材面积
1.In this article, sapwood area is used as a scalar to extrapolate the stand water use from whole tree water use measured by heat pulse velocity recorder(HPVR).该文在单木液流测定的基础上 ,采用边材面积作为纯量 ,对京北山区水源保护林的主要树种油松、刺槐林进行由单木到林分耗水的推算 。
4)specific leaf area比叶面积
1.Relation betweenspecific leaf areas and leaf nutritent contents of plants growing on slopelands with different farming-abandoned periods in the Loess Plateau;黄土高原不同退耕年限坡地植物比叶面积与养分含量的关系
2.Photosynthesis in relation to leaf nitrogen,phosphorus andspecific leaf area of seedlings and saplings in tropical montane rain forest of Hainan Island,South China;海南岛热带山地雨林幼苗幼树光合与叶氮、叶磷及比叶面积的关系
3.Concentrations of PAHs in leaves of six dominant species in the Pearl River Delta of South China were determined with gas chromatography and mass spectrometry(GC-MS),and synchronously leaf-lipid contents,leaf areas,specific leaf areas(SLA) were measured.应用气相色谱-质谱联用方法测定了珠江三角洲地区6种主要树种叶片多环芳烃(PAHs)的含量,并对相应的叶脂含量、叶面积、比叶面积进行了测定,探讨了叶片PAHs含量特征和种间差异的影响因素。
5)leaf area叶面积
1.Theleaf area index measurement of Drepanostachyum ludianense;小蓬竹的叶面积指数测定
2.Effects of fertilizing and sowing amounts on the increase ofleaf area and the accumulation of dry matter of Elymus sibirlius L.cv.Duoye;施肥量和播种量对当年播种的多叶老芒麦叶面积增长和干物质积累的影响
3.Modeling of the leaf age andleaf area per plant in winter barley;冬大麦叶龄与单株叶面积模拟的研究
6)leaf area叶片面积
1.Measurement of plantleaf area;植物叶片面积的测定方法
2.Research on measurement of realistic plantingleaf area based on machine vision;基于机器视觉的现实叶片面积测量方法的研究
3.A new method forleaf area measurement based on the algorithm of image characteristic value was studied in this research.应用扫描图像RGB三原色灰度值分离理论,根据植物叶片扫描图像像素点的分布特征,选用蓝色灰度值作为特征值,以扫描图像灰度中间值127作为叶面积图像与背景图像灰度值的判读指标,通过叶片像素点的分布比例计算叶片面积。
延伸阅读
比表面积分子式：CAS号：性质：单位体积或单位质量固体的表面积，通常用1g固体的总表面积表示。由于制备条件的不同，固体与气相接触的表面大小可有很大差异。多孔性和细碎性固体的表面积包括内表面和外表面，内表面由其内部孔隙和裂缝缝隙面积构成，外表面是固体外部的几何面积，二者之和为总表面积。比表面通常用物理吸附法测定，如BET容量法、重量法、流动色谱法等。有时也可用液相吸附法测定。对比表面大于1m2/g的样品常用低温氮吸附容量法或流动法，而小表面则用低温氪吸附法。对于非孔性固体，也可根据测出的粒子大小计算比表面。
