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| 1 | 毛乌素沙地的粉尘释放通量观测及DPM模型的野外验证显示文摘目前关于中国粉尘源区的释放通量观测数据很少,被经常使用的DPM粉尘释放模型在中国源区的可靠性还没有得到验证.2002年春季在毛乌素沙地开展了野外观测实验,分别观测了跃移通量、<10μm的粉尘释放通量、温度和风速梯度.观测期间平均摩阻风速在0.26-0.35 m.s-1之间,实测的跃移通量约在0.07~8.00 g·m-1·s-1之间,实测和模拟的跃移通量较为一致,跃移通量方程经验系数取2.61比较合适;在3次局地的粉尘释放过程中,实测的粉尘释放通量约在1~3μg·m-2·s-1之间,模拟的粉尘释放通量偏高,说明该模型在低风速条件下还需要校正.通过与前人数据的比较,发现松散的砂质土的跃移通量大于具有物理结皮的砂质土和存在大土壤团块的壤质土,说明在相同摩阻风速条件下,松散的砂质土的粉尘释放通量最大,预示中国北方粉尘的主要源地在沙漠和沙漠化的土地. | 梅凡民 J.Rajot S.Alfaro L.Gomes 张小曳 王涛 | 2006 | 科学通报2006，51，11： | 9 |
| 2 | Species diversity,population structure and regeneration of woody species in fallows and mature stands of tropical woodlands of southeast Angola显示文摘This study in the dry tropical woodlands of SE Angola in Cuando-Cubango Province assessed the diversity and composition of woody species in fallows compared to those in mature woodlands. We assessed the population structure of the most harvested woody species by calculating size class distribution and evaluated their regeneration potential based on the density of saplings. The vegetation was surveyed in 20 plots of 20 × 50 m(1000 m2). In each plot, we measured the diameter at breast height(DBH) of all woody species with DBH ≥ 5 cm. The saplings were counted, identified and recorded; 718 individuals, corresponding to 34 species in 32 genera and 15 families were recorded. The size class distribution of target woody species showed three different patterns in fallows and mature woodlands. In general,most of the smaller diameter classes had more individuals than the larger ones did, showing that the regeneration may take place. However, in some diameter classes, the absence of larger stems indicated selective logging of larger trees. Few saplings were recorded in the fallows or mature woodlands; fire frequency and intensity is probably the main obstacle for seed germination and seedling survival rates in the studied area. | Francisco M.P.Goncalves Rasmus Revermann Manuel J.Cachissapa Amandio L.Gomes Marcos P.M.Aidar | 2018 | Journal of Forestry Research2018，29，6： | 5 |
| 3 | Characterization of enamel in primary teeth by optical coherence tomography for assessment of dental caries显示文摘 | ANA. M. A.MAIA DéBORAH D. D.FONSêCA BERNARDO B. C.KYOTOKU ANDERSON S. L.GOMES | 2010 | International Journal of Paediatric Dentistry2010，，2： | 1 |
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