生态期刊种类有哪些英语

适合中学生看的英语课外书种类有很多，但是市面上的课外读物分很多种，需要你自己去甄别和挑选适合自己的。比较好的英语课外读物有如下几种：英语报刊类：《英语周报》、《中学生英语》、《21世纪报》报纸的特点就是具有时效性、实用性、内容丰富多彩，版块形式多种多样，通过报刊可以了解时事政治、经济、文化等世界的动态变化，而且都有相应的知识版块练习和巩固。就拿《英语周报》来讲：每个星期一期，每一期都是一次英语大餐，版块上面分布有完形填空、单项选择、阅读理解、短语单词辨析、句型训练、英语幽默、英语世界国家的实时动态阅读，学习了解的东西简直不要太多哦。英语杂志类：《英语沙龙》、《英语角》、《英语世界》，这些都是比较好的英文杂志。杂志是一个月一期，每期内容也很丰富。就拿《英语沙龙》来讲，每一期的《英语沙龙》都是中英文对照，对基础薄弱或者基础一般的中学生而言简直就是福音；里面的文章都是科普知识，后面备有生词的学习；图文结合，增加了阅读的趣味性和可读性，创造了一种能让中学生喜欢上英文阅读的氛围。英文课外书籍类：首推的当然是新概念英语ⅠⅡⅢⅣ，无论是低年级还是初中生甚至高中大学生都是一个必推的英文读物。它的设计由浅入深、由易到难、由短到长，层层递进，每一篇文章后面都有相应的生词表、重难点、问答形式的查验和复习，特别适合英语爱好者和英语入门基础者的学习和背诵。英语读五花八门，种类繁多，需要我们自己去认真地辨别和挑选，看哪一种适合自己，找到适合自己的英语学习资料，学习起来才能事倍功半，游刃有余。

China is a low forest--covered The forest inthis country is mainly composed of young and middleaged plantations, and most of natural forests concentrateon remote However, there arc two merits forpromotion of forestry in China; firstly there are rich treespecies that can provide an abundant gene pool for plan-ation, and secondly Chinese government is paying agreat attention to plantation and protection of Since 1980 biomass and productivity have beeBased on a literature review, we re-analyzed Chinese national forest biomass and productivity data and response of predicted forest productivity to global climate Total forest biomass in China was between 0 Pg C (1 Pg C= 109 t C) and 1 Pg C, with a best estimate of 6 Pg C, and total national forest NPP excluding special product plantations and bamboo forest was 4- 6 Pg C a-1, with an average of 5 Pg C a- Studies of the terrestrial ecosystem models and the atmospheric general circulation models showed that prodicted global climate changes increased total forest NPP of China by 12 %-35 %, and that amplitude of change varies from place to These results provide effective data for future climate research in Casured f…

应用生态学报、土壤、植物学报

Global Environment Change，影响因子9，很高吧，可以一试，