造林

The idea has spread widely to other lands where it is variously celebrated as the 'Festival of Trees','Greening Week' of Japan,'The New Year's Days of Trees' in Israel,'The Tree-loving Week' of Korea,'The Reforestation Week' of Yugoslavia,'The Students' Afforestation Day' of Iceland and 'The National Festival of Tree Planting' in India. Arbor Day in its various forms is now recognised in more than fifty countries.问题补充: On Arbor Day, particular attention is drawn to the part trees play in our lives.

想法广泛传播了对它不同地庆祝作为树的'节日的其它土地，'绿化的星期'日本，'新年树的在以色列，'喜爱树的星期'韩国，'重新造林星期'南斯拉夫，'学生的植树造林天'冰岛和'全国节日在树荫处天，特护被引起对零件树演奏在我们的生活中。

Forest coverage rate is about 25%, should be vigorously planting afforestation, greening barren hills in order to develop timber and economic forest mainly to strengthen the protection and management of existing forests.

森林覆盖率约为25％，还应大力种树造林，绿化宜林荒山，以发展用材林和经济林为主，加强对现有森林的保护和经营。

From the research result mentioned above, it was concluded that the selection of excellent single shoot tissue culture seedlings was an effective approach to guarantee fast growth and high yield of rattan plantation; the application of advance planting technique, such as controlling planting time, seedling number per group and spacing was very important for the purpose of minimizing unfavorable effect of rattan planting on upper trees, increasing cane yield and improving the level of economic gain; the determination of optimal harvest regime by adjusting the first harvest time, the lower limit of stem length for cutting as well as the harvest interval offered technical support to utilize resources reasonably and sufficiently and to enhance the economic benefit dramatically.

综合分析，通过组培快繁技术选择优质组培单芽藤是保证藤林速生丰产的有效途径；根据藤种的生物学特性，选择适宜的林地和上层林分，采取调控种植时间、丛栽株数和株行距等造林措施是减少棕榈藤间种对上层树种不利影响、有效增加原藤产量和提高林地增益水平的关键措施；而通过控制初始采收龄、起采茎长和采收间隔期，确定藤林最佳采收方式是促进资源充分利用、提高藤林的经济效益的有力保障。

Beijing officials conceded defeat in their 20-year quest to use trees to block blinding Spring sandstorms from the Gobi desert.

环境监测中心统计四月份北京的天空只有14天是蓝色，政府承认推行20年的「造林防沙暴」效果不彰。

Green Project Hope adopt the forestation activity to absorb society contribution , sole duty personnel tree planting , Project Hope operating mechanism superintend , the way that the local personnel maintains carries out, in order to improving local improvement of the ecological environment , making the day be bluer , water is more beautiful , person is more healthy.

绿色希望工程采用吸收社会捐款、专职人员植树、希望工程工作机构监督、当地人员养护的方式开展造林活动，以改善当地生态环境建设，让天更蓝，水更美，人更健康。

This result shows that slope form, depth of A+AB soil horizons, soil texture, soil compaction and management level are very important factors, and slope position, slope direction and to the scores of digitizing site indices, site types were ...

根据数量化立地指数得分表划分立地类型，以探讨木荷在各立地上的生长趋势并对立地质量进行了评价。本文还对木荷造林地的选择作了初步探讨。

Thoreau embarked on a two-year experiment in simple living on July 4, 1845 when he moved to a second-growth forest around the shores of beautiful Walden Pond and lived in a self-built house on land owned by Emerson.

梭罗于1845年7月4日开始两年的简单生活体验，当时他搬到一个环绕在美丽瓦尔登湖岸边的人造林，并住进爱默生田产上的一幢自建屋。

Historical sites: the southern slope of Kawamura Red-billed Hill, since the beginning of the spring of 1964, the provincial model workers Guo Shan, 23 after the Spring and Autumn Period, the practice of repeatedly and continuously explore, to create a land-for-drought level terrace renovation sik Tree technology, in order to move fortitude striking more than 42,000 cubic meters of earth, iron mill bald Catalpa low post and the first 17, 753 to renovate into a high-standard terraced fields, planting 125 acres, planted fruit, pears, peaches, apricots and other economic and elm trees, Chun, Huai Yang, pine and cypress trees, and other ecological 10,000 a total of more than 3.84, in the past so that the bald ridge of barren hills into a tree, pear fragrance of the landscape, Guo Shan as the "Red-billed the new hill-yu Public,"Red-billed Hill will be listed as one of the eight new Ning.

名胜古迹：南坡川村红嘴山，自1964年春开始，省劳动模范郭富山，历经二十三个春秋，反复实践，不断摸索，创造出抗旱换土水平梯田整修植树技术，以惊人的毅力移动土方42000多立方米，磨秃铁楸和橛头17把，修整成753块高标准梯田，造林125亩，栽种果、梨、桃、杏等经济树种和榆、椿、槐、杨、松柏等生态树种共3.84多万株，使过去的荒山秃岭变成了绿树成荫，梨果飘香的风景之地，郭富山被誉为&红嘴山上新愚公&，红嘴山被列为会宁新八景之一。

Based on the available knowledge of pollution ecology of mangrove combined with the data on tideland pollution in Guangdong Province the paper conducts a scientific judgment on whether some polluted tidelands in this Province can be sued for establishing mangrove plantations or not so as to provide a scientific guideline for selecting the species to suit a tideland or selecting a tideland to suit the species in constructing ecological and public welfare mangrove system along the coast of the Province at pre .

以现有的红树林污染生态学知识为依据，结合广东省潮间带滩涂污染状况的调查资料，对其中某些地点的潮间带是否可以营造红树林作出科学的判断，从而为广东省当前建立生态公益红树林体系选树适地和选地适树提供参考，同时阐明在污染潮间带营造红树林需要采取的科学步骤和提出急需解决的一系列科学问题以及建立红树林污染造林学分支学科的初步设想。

Intensive management and other sylviculture methods can resolve the problem to some extent, but it is hard and expensive. To select the drought resistance species with a high water use efficiency is the alternative way which resolve the problem without intensive management or other sylviculture actions.

采取集约经营和其它造林措施可以减少甚至避免供水不足或干旱对藤林生长的影响，减低藤林经营者的损失，但这些措施劳动强度大而且成本很高；而如果能够选用抗旱能力强和水分利用效率高的藤种，则可以避免上述不足。

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。