A study was carried out in the 50-ha Korup Forest Dynamic Plot in South West Cameroon, to evaluate the diversity of mycorrhizal associations as well as to deter
【导读】本文亮点有三：一是用回忆的方法来写九寨沟之景，构思新颖。六年而不忘，足见九寨沟之荣在脑海中印象之深。二是写景突出重点，写出特点，作者其中写九寨沟的“海予”，突出了九
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千湖布江汉,万珠落荆楚。江为母,湖乃乳,孕育荆楚,壮美华夏。千湖之名史载,古云梦大泽,方圆九百里。其群山环绕者,有秦岭大巴之列嶂;其江河广纳者,有长江汉水之通汇,巍巍乎,
根据自行车使用特征和自行车使用者的心理,从静态和动态两个方面出发对大量自行车停车、行车时对附近路段与交叉口的机动车和行人交通产生的影响及其原因进行了详细的分析,并
Considering the importance of the tomato crop and the high costs for controlling Meloidogyne incognita with resistant cultivar or nematicides, it is necessary f
The leguminous tree species Dipteryx odorata (Aubl.) Willd. and Inga edulis Mart. were grown in the field to reforest a degraded area. To investigate the photos
自古以来,人们崇拜的是那些不畏艰险,永不言弃的人,殊不知,放弃也是一种美。有时候,学会放弃对你来说或许更重要。常有人说,“坚持就是胜利”。这话乍一听,并无异议,但细想起
清明节“清明时节雨纷纷,路上行人欲断魂”。清明节是我国的传统节日,它是纪念我们祖先的日子。想起我们中华民族这个伟大的民族,以及历史上那些让人热血沸腾的伟人、无名英
Grassland cover and composition respond to climate and have undoubtedly changed during the Holocene, but quantitative reconstructions from fossil pollen have be