1.(树皮下较软的)白木质,边材
1.the soft wood of a tree between the inner bark and the heartwood
1.In the tree crown, the basal area growth of trunk sapwood is approximately equivalent to that of the upper branch sapwood.
在树冠内，树干边材断面积生长量与其上部的枝条边材断面积生长量大致相等。
2.the side is in light color, which is called sapwood.
在边部，颜色较浅，称边材。
3.In older stems, only the most recent rings of xylem participate in the transport of materials. These make up the sapwood.
在老茎中，仅最新的木质部环参与物质的运输。这些木质部环组成边材。
4.The wood varies in colour from a flesh shade to a light reddish-brown with little distinction between heartwood and sapwood.
木材颜色从肉色到淡红褐色不等，边材和心材区别很小。
5.If timber poles are used, the bark can be peeled off the tops to expose the light colored sapwood.
如用圆木杆，可削去顶端树皮，露出木质部的明亮色泽。
6.Such vessels are often blocked by substances (e. g. resins and tannins ) that give the wood a darker color. Compare sapwood.
这些导管往往被一些物质（例如树脂和鞣酸类）所封闭，使木材颜色变深。
7.The sapwood of most species is more susceptible to fungal attack than the heartwood with its higher extractive content.
大多数树种的边材要比含有教高抽提物含量的心材更易受真菌的侵害。
8.The sapwood is yellowish with a hard and heavy heartwood .
边材微黄色，心材坚硬而且沉重。
9.Sapwood and heartwood are not well demarcated, although the sapwood alters faster than the heartwood.
边材和心材没有得到很好划分，虽然改变的速度比边材心材。
10.Sapwood area calculation and water use scaling up from inpidual treesto stands of Chinese pine and black locust.
油松、刺槐单木与林分水平耗水量的尺度转换。