共查询到20条相似文献，搜索用时 640 毫秒
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丹妮 《绿色中国(A版)》2008,(20)
走进建材城,各式各样的龙头让人眼花缭乱,款式有手按的、提拉的、旋转的、脚踏的、混水的、自动感应的很多种,适用地点还各不相同,价格也参差不齐,要想从中选购一款合适自己的产品还真不容易,所以请看以下选购龙头的小指南,希望能给你一些帮助。 相似文献
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赵一曼 《绿色中国(A版)》2008,(22)
白皙美丽的肌肤是所有女性梦寐已求的,只有保养好内层肌肤,表面的肌肤才能健康美丽。健康的内层肌肤对美化表面肌肤至关重要。随着冬季的来临,由于温度和湿度的变化,皮肤新陈代谢的速度减慢,使皮肤保留水份的能力降低,因此皮肤变得很干。而新陈代谢减慢,又会导致受伤的皮肤细 相似文献
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初雪 《绿色中国(A版)》2008,(22)
一、遗失的手套段小苏:初春的午后,我将满满两抽屉的手套整理出来,洗净,晾晒,那一排排粉红、浅蓝、鹅黄、草绿、雪白的手套吸引了对面楼里那个扎着好多辫子的小女孩,她趴在阳台上,用兴奋的语调问我:姐姐,你的那些漂亮手套为什么只有一只呢,它们的另一半呢?它们的另一半被我落在了夏宇的口袋里。以前,每次让他把手套还给我的时候, 相似文献
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《绿色中国(A版)》2010,(9):56-61
总政歌舞团著名青年歌唱演员、国家一级演员蔡国庆获奖感言:这样的时刻在我心中是充满真情和温暖的,因为我始终坚信绿色的中国才是一个更加和谐美丽的中国。我愿意作军中的一棵小白杨,我希望用我的爱心和歌声守护祖国每一片绿色的森林和我们心中绿色的家园。 相似文献
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初雪 《绿色中国(A版)》2008,(18)
香水,这种神奇的化妆品,能带给女人自信和欣喜,它可以愉悦你的心情、平衡你的情绪、表达你的心意、体现你的气质、协调你与周围环境的关系。难怪有人说,一个真正懂得美的女人一定是一个选择和使用香水的高手。的确,香水是造就一个女人整体美的必备单品。本季,各大香水品牌又纷纷推出新品,给爱美的女人更多选择的机会。雅诗兰黛Sensuous系列 相似文献
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绵延的绿海,茂密的树林,潺潺的溪水,是刚刚离开这个世界的杨善洲留下的最直观的宝贵财富。同时,他还留给我们更多的宝藏。这些宝藏中最重要的,是他为党和人民的事业奋斗终生的精神。从领导的位子上退下来后, 相似文献
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丹妮 《绿色中国(A版)》2008,(22)
在滇、桂、黔三省(区)结合部,有一片美丽而神秘的地方——罗平。去那里旅游不仅可以欣赏气势雄伟的瀑布群落、幽深险峻的峡谷、挺拔秀丽的峰丛、独特的地貌奇观、苍莽的林海、溢彩流金的油菜花海、蜿蜒曲折的河流、玲珑剔透的滩跌、碧绿如玉的湖泊构成的一道道靓丽的自然风景,还能看到丰富的文物古迹、感受古朴浓郁的布依风情、品尝许多美味佳肴,难怪明代大旅行家、地理学家徐霞客游览后写下罗平著名迤东的赞叹。 相似文献
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通过对巨桉、尾叶桉生物学特性、省外栽培情况、思茅地区小面积引种情况、省外栽植地点和引种地的立地条件进行分析比较，选择气候因子进行相似优先比论证，得出思茅地区在一定范围内大面积引种巨桉、尾叶桉是可行的结论。 相似文献
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欧祝平 《中南林业科技大学学报(自然科学版)》2003,23(6):57-61
事业有成是高校青年教师的基本要求,也是青年教师思想政治素质的集中体现。高校青年教师思想政治工作要适应其内在需求,其核心是要遵循知识分子的成长规律。新形势下,高校青年教师的思想政治工作必须超越以往的物质利益观或问题观,从有利于实现高校教师思想政治工作目标、调动青年教师积极性、实现青年教师价值、沟通融合思想、抓住热点问题入手,才能取得好的效果。引导青年教师事业有成是个体成才与高校思想政治工作相结合的最佳切入点,是高校青年教师思想政治工作最根本的动力。 相似文献
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Although much is known about drivers of productivity in Douglas-fir and red alder stands, less is known about how productivity may relate to stand transpiration and water use efficiency. We took advantage of a 15-year-old experiment involving Douglas-fir (Pseudotsuga menziesii) and red alder (Alnus rubra) in the western Cascade Range of western Oregon to test the following hypotheses: (a) more productive stands transpire more water, (b) the relationship between productivity and transpiration differs between species, and (c) the relationship between productivity and transpiration differs between sites varying in soil moisture and fertility. Furthermore, the experimental design included alder, a facultative nitrogen-fixing species, which could also affect fertility. Fixed area plots (20 × 20 m) were planted as monocultures of each species or in mixtures at a common density (1100 trees ha−1) in a randomized-block design. Transpiration of Douglas-fir and red alder was measured using heat dissipation sensors installed in eight trees per plot and scaled to the plot level based on sapwood basal area for each species. Although up to 53% of the variability in tree transpiration was explained by basal area, irrespective of species or site conditions, the two stands with the highest biomass and sapwood basal area did not transpire the most. Instead of more productive stands transpiring more water, the greatest variability in both productivity and transpiration was determined by site conditions and to a lesser degree, species composition. For example, 70% of the variation in tree biomass increment (TBI) was determined by leaf area index, which was much higher at the site with higher fertility and soil moisture (p < 0.05). Despite marked phenological and physiological differences, Douglas-fir and red alder performed similarly. Only 19% of annual water use of Douglas-fir occurred between October and March when alder was leafless. Also, there was no evidence of a fertilization effect of the nitrogen-fixing red alder on the Douglas-fir: the nitrogen concentration and N-isotopic ratio of Douglas-fir needles did not differ whether trees were grown in monoculture or in mixtures with red alder. We conclude that lower soil fertility and contrasting microclimate at one site relative to the other suppressed NPP while maintaining higher transpiration, thus reducing water use efficiency. 相似文献
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2008年冬,南岭林区遭遇特大雨雪冰冻灾害,使得该区森林生态系统遭受极大破坏。灾后及时采取了清理大量枯落物等恢复措施。研究结果表明,经过3年的恢复期后,该区林分及其生物多样均有所恢复。冰灾后形成的林窗区使得各种植物萌发,改善了林分结构,从而使森林生态系统得到修复和重建,也使生物多样性比冰灾前更为丰富。种群数和种群密度则比冰灾年增加57.13%和30.77%。因此,本研究表明,虽然冰冻灾害会对森林生态系统产生严重影响,只要恢复措施得当,灾后的生态系统或会更加优化。 相似文献
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Silva RD Bueno AL Gallon CW Gomes LF Kaiser S Pavei C Ortega GG Kucharski LC Jahn MP 《Fitoterapia》2011,82(6):818-826
This study analyzed the plasma lipid profile, glucose levels and fat deposits in male rats treated with aqueous extract of gross yerba mate, commercial yerba mate or water. Yerba mate treatment did not change body weight gain and lipid profile. The consumption of gross yerba mate significantly increased blood glucose (6.6 mmol/L) as compared to the water (4.8 mmol/L) and commercial group (5.2 mmol/L) and decreased epididymal and intra-abdominal deposits (10.1 mg/g and 23.7 mg/g of weight) as compared to the water (15.4 mg/g and 36.9 mg/g of weight) and commercial group (12.5 mg/g and 28 mg/g of weight). The results suggest that gross yerba mate reduces fat more efficiently but produces a greater increase in blood glucose when compared to commercial yerba mate and water groups. 相似文献
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The global ecosystem model SEIB-DGVM was adapted for an eastern Siberian larch forest through incorporation of empirical rules of allometry, allocation, and phenology developed for a larch stand at the Spasskaya-pad tower site, Yakutsk, Russia. After calibration, the model reconstructed post-fire successional patterns of forest structure and carbon cycling. It also reconstructed seasonal changes in carbon, water, and energy cycling in a mature larch forest. Sensitivity analysis showed that simulated functional properties of forest (LAI, NPP, carbon pools, and water runoff) are mainly determined by climatic environment, and population dynamic parameters (i.e., parameters for establishment and mortality) plays only minor role on them. Sensitivity analysis also showed that plant productivity and biomass were mainly limited by available water at Spasskaya-pad, where mean annual precipitation is only 257 mm. In the model, higher air temperature increases plant productivity via extension of growing season, and decreases plant productivity via causing drought and higher respiration. We found that the net effect is reduction of productivity, suggesting a possibility that global warming induces decrement of plant productivity in eastern Siberian larch forests. 相似文献