森林学

Japhy Ryder was a kid from eastern Oregon brought up in a log cabin deep in the woods with his father and mother and sister, from the beginning a woods boy, an axman, farmer, interested in animals and Indian lore so that when he finally got to college by hook or crook he was already well equipped for Ms early studies in anthropology and later in Indian myth and in the actual texts of Indian mythology.

贾菲莱德在俄勒冈东部长大，自小与父母和姐姐住在森林深处一间小木屋里，在林场上做工，伐过木也种过地，喜欢动物和印第安人的古老传说而正是这种兴趣使他在最终想方设法进入大学后开始研究人类学、印第安神话学和印第安神话原始文本时已是得心应手。

The forest was characterized with phanerophyte evergreen plants with single-mesophyll-leathery leaves, which reflected the nature of tropical Karst mountainous seasonal rain forest.(2). Community succession was divided into five stages by using Cluster method, PCA method; the succesion stages include herbaceous stage, scrub-shrub stage, small tree stage, arbor stage and climax seasonal rain forest stage.(3). Based on similarity theory, succession sere was constructed with the community similarity equation formed.

结果表明：(1)森林群落在外貌上，以常绿高位芽、单叶、革质、中型叶植物为主，反映了热带岩溶山地季雨林的特点；(2)运用聚类分析、PCA排序等方法将群落演替阶段划分为草本群落阶段、灌丛阶段、小乔木阶段、乔林阶段、顶极季雨林阶段；(3)运用相似学原理，组建群落间相似度方程并以此方程构建了群落演替系列；(4)研究表明桂西南岩溶区生态系统健康受到严重胁迫。

When men dove to the ground for cover, as they had been trained to do and as instinct dictated, they exposed themselves to a rain of hot metal and wood splinters , they learned that to survive a shelling in the Hurtgen, hug a tree.

当人们按照训练所学和出于本能，扑倒在地寻找隐蔽时，身体却暴露在如雨点般倾泻的滚烫弹片和碎木片之下；于是他们学会了如何在霍根森林炮击中生存——紧紧抱住某棵树。

Center for Ecology and Conservation Biology is primarily dedicated to education and research in ecology and conservation biology including paleoceanography, ecological economics, sensory biology, behavioral ecology of birds, behavioral ecology and insect sociobiology, evolutionary biology, ichthyology, forest ecology and biogeochemistry, mammalian population genetics, etc.

生态学与保护生物学中心致力于生态学与保护生物学的教学与研究，其研究领域包括古海洋学，生态经济学，感官生物学，鸟类行为生态学，行为生态学和昆虫社会生物学，进化生物学，鱼类学，森林生态学和生物地理化学，哺乳动物遗传学等。

"Hunters killed their parents for meat; now orphan gorillas relearn forest survival skills with help from ... the Gorilla Protection Project in Plateaux Batéké National Park."

猎人杀死它们的双亲为了肉；现在孤儿大猩猩重学森林生存技能和帮助从…大猩猩保护项目在Plateaux Batéké国家公园。

We believe that the discipline of silviculture needs further guidance from the system sciences.

森林培育学需要加强系统科学的指导。

Papers on silviculture (1949～1998) in China are gathered and studied applying the principle and method of literature metrology.

该文应用文献计量学的原理和方法，调研并收集了1949～1998年我国森林培育学科技论文28 053篇。

"We are going to see a virtually complete loss of mature lodgepole pines in the state of Colorado by mid-centure." says Jan Burke, silviculturist for the White River National Forest.

"在本世纪中所有的扭叶松树将会完全在卡罗拉多州消失"白河国家森林林学专家Jan Burke 说。

This research aims at the surveying of stumpage by 3-D laser scanning imaging system which is not only obtain abundant information of surveying tree gene, but also expend the research of forest calculating and surveying which is a very significative work.

文章针对立木的测量，采用三维激光扫描成像系统，不仅获得了丰富的测树因子信息，更以此为基础对森林计测学研究进行了扩展，是一项非常有意义的工作。

"We are going to see a virtually complete loss of mature lodgepole pines in the state of Colorado by mid-centure." says Jan Burke, silviculturist for the White River National Forest.

&在本世纪中所有的扭叶松树将会完全在卡罗拉多州消失&白河国家森林林学专家Jan Burke 说。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。