【摘 要】
：
采用温室盆栽法,研究镍(Ni)、铜(Cu)单一处理(0、50、100、200、400mg.kg-1)对金昌Ni/Cu尾矿库先锋植物盐生草(Halogeton glomeratus)幼苗Ni、Cu积累、膜脂过氧化程度与抗氧化酶系统的影响。结果表明:盐生草幼苗叶片及根部Ni、Cu含量随土壤中Ni、Cu含量的增加而增加,Ni、Cu含量以根部含量为高;叶片及根部丙二醛(MDA)含量随Ni、Cu处理浓度升高
论文部分内容阅读
采用温室盆栽法,研究镍(Ni)、铜(Cu)单一处理(0、50、100、200、400mg.kg-1)对金昌Ni/Cu尾矿库先锋植物盐生草(Halogeton glomeratus)幼苗Ni、Cu积累、膜脂过氧化程度与抗氧化酶系统的影响。结果表明:盐生草幼苗叶片及根部Ni、Cu含量随土壤中Ni、Cu含量的增加而增加,Ni、Cu含量以根部含量为高;叶片及根部丙二醛(MDA)含量随Ni、Cu处理浓度升高显著增加,膜脂过氧化程度加剧;Ni胁迫下盐生草叶片中仅抗坏血酸酶(APX)活性随Ni浓度增加总体呈增加趋
其他文献
Paleoenvironmental history in the monsoonal margin in the northeast Tibetan Pla-teau provides important clue to the regional climate. Previous researches have been limited by either poor chronology or
Based on phenological records extracted from Chinese historical dairies, spring phenological series in the Yangtze River Delta (YRD) of China since 1834 is reconstructed. Together with temperature and
Vegetation greenness is a key indicator of terrestrial vegetation activity. To under-stand the variation in vegetation activity in spring across eastern China (EC), we analysed the variation in the No
Plant growth at northern latitudes is highly responsive to the climatic changes that have occurred over recent decades. However, the sensitivity of the phasing of the seasonal cycle of terrestrial eco
The International Conference on Land Use Issues and Policy in China under Rapid Rural and Urban Tranformation was held in Beijing,China,from 20 to 23 October2012,under the auspices of National Natural
As geographic literacy training is an essential content for Chinese citizens literacy education,national geographical education is one of the indispensable key aspects of that training.Because of Chin
青藏铁路西宁至格尔木段(西格段)日照冻融变化强烈、风力强劲,为了解决该环境下戈壁风沙流对路基的危害,以PE(polythene)固沙网为平面防治并结合高立式沙障为立面防治措施,组成了戈壁风沙流防治体系,通过现场观测及室内风洞实验,验证了该防治体系的防风固沙效果和工程可靠性。工程应用表明,该防治体系具有抗风蚀性能强、可重复利用、寿命长及绿色环保等特点,能够有效防治铁路戈壁风沙流的危害,并对养护工作量
以古尔班通古特沙漠南缘一年生梭梭移栽苗为研究对象,对梭梭幼苗的地上部分生长状况、蒸腾速率日变化趋势以及根系形态进行了调查,探讨不同坡向梭梭幼苗的生长和适应特征。结果表明,平地、阴坡和阳坡表层0～30cm土壤含水量无显著差异,40～100cm土壤含水量阳坡<阴坡<平地。梭梭幼苗同化枝生长速率和含水量均表现为阳坡<阴坡<平地,其生长速率和含水量可能与根层土壤含水量高低有关。不同坡向梭梭幼苗蒸腾速率日变
应用聚类分析法,对乌鲁木齐市2009—2010年逐日气流72h后向轨迹按季节进行分类,结合对应时段的PM10、PM2.5和PM1.0观测数据,分析了不同气流输送轨迹对研究区3粒径段气溶胶浓度的影响。结果表明:冬季,气流对研究区气溶胶的搬运、稀释作用明显,气溶胶浓度平均值与对应气流移动速度成反比;春季,流经沙漠区的气流分组对应气溶胶浓度平均值偏高,且气溶胶谱分布向粗模态移动;夏季,大气清洁,携带城市
Several Au deposits in Guizhou Province,southwest China,described as being similar to the highly productive Carlin-type gold deposits in northern Nevada.USA,were examined to identify similarities and