树种

The preliminary results showed that the atmosphere contaminator mainly contained SO\-2, NO\-\%x\% and suspended granule. Which caused large area acid rain with high frequency. As pollution became more serious, there were decreases in pH value and increases in the content of SO\+\{2-\}\-4 and Al\+\{3+\} in forest soil; the chlorophyll concentration also would decrease...

初步结果表明：大气污染引起珠江三角洲地区发生大面积、高频率的酸雨，主要的污染物有SO2 、NOx、悬浮颗粒物等；随着污染程度的增大，森林土壤pH值降低，SO2 - 4和Al3+质量浓度增大；马尾松、湿地松叶片叶绿素含量降低，生长衰退甚至死亡；但不同树种对大气污染敏感程度不同，种植马占相思比马尾松更能增加林地对酸雨缓冲力和提高土壤肥力。

And it is the correlativity of the two different individual groups in the different species.

联结度就是相关度，实质上是两个种群的个体群间的空间关系，一般它是针对于植物群落内不同树种间两个个体群的相关程度。

Using compulsory feed system ,whether trees complex,pulp material in larger difference or remaining the leftover material after timber procedding ,such as wood paringhs ,sawdust ,pulp residue and the quenching reed pieces rice wheat grass ,cotton stalks ,they are all separated to become quality fibre through its high peed eddy and appropriate mill piece clearance .

适用于化学浆、半化学机械浆，冷浸法高得率浆及纤维板料的研磨，采用强制式喂料系统，无论是树种复杂，材性差异较大的浆料，还是木材加工后剩余的边角料，刨花、锯屑、浆渣及冷浸法苇片、稻麦草、棉杆等，都能够以其较高的旋转线速度，适当的磨片间隙分离成为优质纤维。

Using compulsory feed system ,whether trees complex,pulp material in larger differenceremaining the leftover material after timber procedding ,such as wood paringhs ,sawdust ,pulp residuethe quenching reed pieces rice wheat grass ,cotton stalks ,they are all separated to become quality fibre through its high peed eddyappropriate mill piece clearance .

适用于化学浆、半化学机械浆，冷浸法高得率浆及纤维板料的研磨，采用强制式喂料系统，无论是树种复杂，材性差异较大的浆料，还是木材加工后剩余的边角料，刨花、锯屑、浆渣及冷浸法苇片、稻麦草、棉杆等，都能够以其较高的旋转线速度，适当的磨片间隙分离成为优质纤维。

Han Yifan, a Chinese Academy of Forestry researcher, told us that Beijing began planting cottonwood poplar trees about 20 years ago and that about 70% of the city's trees are now this species.

中国林科院的韩一凡研究员告诉我们，北京从20年前开始种植毛白杨，北京目前70%的树木都是这一树种。

Crackle size and quantity of dry conditions, wood species and the size of the different sections.

裂纹的大小和数量因干燥条件、树种以及木料断面的大小而不同。

Korean pine :Rarity tree in Xiaoxinganling, strsight stock, well material, easy to machining, corrosion stability, valuable on craftwork.Commonly use in crosstie boat, and furniture.

红松：是小兴安岭的珍贵树种，树干直，材质好，出材率高，易加工，耐腐朽，工艺价值高，用于建筑、枕木、造船、家具等；红松是宁断不弯，冷杉是宁弯不断。

Based on the information taken from the subcompartmental records a comparison between the actual and normal forests was made and a new point of view was proposed in the article: in the case of cultivating timber-forest which is different in cutover age, age class and growing speed within the range of the whole forest station, the forest age class distribution showing the opposite shape of "J" is of more benefit to keeping the relative stability of all the age class area than the age class distribution of th...

本文在统计森林资源小班档案卡片有关资料的基础上，把现实林分与法正林相比较，用法正林学说来指导全场森林的调查。并提出了一个新的观点：在整个经营单位内，培育不同生长速度，不同主伐年龄，龄级期不同的用材树种，森林的龄级结构呈反"J"形分布此法正分布更有利于维持各龄级面积的相对稳定，并且，年伐量的波动不大，有利于森林的永续利用。

Poplars are one of the most important deciduous trees in the world. China is rich natural resource of poplars.

杨树是世界上广泛栽培的重要造林树种之一，我国是世界上杨树资源丰富的国家。

There are greater differences between the absorbing dust、sulfur dioxide and heavy metal capability of different types of trees. Synthetically Considering the purification function on the air pollution of trees, can divide the trees into : The first kind of comprehensive absorbability to the air pollution is relatively strong, pagoda tree, Apple, China Savin, Poplar; Second comprehensive absorbability in air pollution strong, such as Deodar Cedar, purple leaf Li, Glossy Privet; The third kind of comprehensive absorbability to the air pollution is medium-sized, such as the cedar , Pear , Evergreen Euonymus , peach, apricot, Huashan pine.

综合考虑植物对环境的净化作用，可将试验段生态防护林带的组成树种分为三类：第一类对环境净化能力很强，如圆柏、国槐、杨树、苹果等；第二类对环境净化能力强，如雪松、大叶女贞、紫叶李等；第三类对环境净化能力中等，如华山松、梨、杏、桃、黄杨等。

For a big chunk of credit-card losses; the number of filings (and thus charge-off rates) would be rising again, whether

年美国个人破产法的一个改动使得破产登记急速下降，而后引起了信用卡大规模的亏损。

Eph. 4:23 And that you be renewed in the spirit of your mind

弗四23 而在你们心思的灵里得以更新