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基于生源特点地方高校研究生教学模式探索——以河北大学生态学专业为例
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作者 姚晓芹 楚建周 刘存歧 《教育教学论坛》 2018年第23期146-147,共2页
地方院校研究生生源主要为调剂生或地市级高等院校的学生。调剂生多数为跨专业学生,专业基础比较差;地市级高等院校学生普遍动手能力和科研思维能力较差。针对地方高校研究生的生源特点,通过对河北大学生态学专业研究生教学模式的改变... 地方院校研究生生源主要为调剂生或地市级高等院校的学生。调剂生多数为跨专业学生,专业基础比较差;地市级高等院校学生普遍动手能力和科研思维能力较差。针对地方高校研究生的生源特点,通过对河北大学生态学专业研究生教学模式的改变与探索,我校生态学专业研究生近几年的科研成果和毕业生质量有了明显提高。实践证明,地方高校通过制定适合自己的研究生教学模式,同样可以培养出高质量的研究生人才。 展开更多
关键词 地方高校 生源特点 研究生 教学模式
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Organic Phosphorus in Shallow Lake Sediments in Middle and Lower Reaches of the Yangtze River Area in China 被引量:24
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作者 JIN Xiang-Can WANG Sheng-Rui +1 位作者 chu jian-zhou WU Feng-Chang 《Pedosphere》 SCIE CAS CSCD 2008年第3期394-400,共7页
Thirteen sediment core samples(0-10 cm) were taken from the seven lakes in the middle and lower reaches of the Yangtze River to determine the contents and distributions of organic phosphorus(P) fractions in the sedime... Thirteen sediment core samples(0-10 cm) were taken from the seven lakes in the middle and lower reaches of the Yangtze River to determine the contents and distributions of organic phosphorus(P) fractions in the sediments of the shallow lakes in the area.The organic P fractions in the sediments were in the order of moderately labile organic P(MLOP) > moderately resistant organic P(MROP) > highly resistant organic P(HROP) > labile organic P(LOP),with average proportional ratios of 13.2:2.8:1.3:1.0.LOP,MLOP,and MROP were significantly related to the contents of total organic carbon(TOC),water-soluble P(WSP),algal-available P(AAP),NaHCO3-extractable P(Olsen-P),total P(TP),organic P(OP),and inorganic P(IP).However,HROP was significantly related to OP and weakly correlated with TOC,WSP,AAP,Olsen-P,TP or IP.This suggested that organic P,especially LOP and MLOP in sediments,deserved even greater attention than IP in regards to lake eutrophication.In terms of organic P,sediments were more hazardous than soils in lake eutrophication.Although OP concentrations were higher in moderately polluted sediment than those in heavily polluted sediment,LOP and MLOP were higher in the heavily polluted sediment,which indicated that heavily polluted sediment was more hazardous than moderately polluted sediment in lake eutrophication. 展开更多
关键词 BIOAVAILABILITY chemical extracted phosphorus lake sediment middle and lower reaches of the Yangtze River area organic phosphorus fractions
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