The biomass, primary productivity and energy use efficiency of photosysthetically active radiation of climax vegetation on Dinghu Mountains, in low subtropical were studied with the tree-harvested, litter gather, CO, ...The biomass, primary productivity and energy use efficiency of photosysthetically active radiation of climax vegetation on Dinghu Mountains, in low subtropical were studied with the tree-harvested, litter gather, CO, analysis methods, etc. The results show that the leaf area index of the community is 17; biomass, 363 t·（hm<sup>2</sup>）<sup> -1</sup> · a<sup>-1</sup>, total productivity, 132 t· （hm<sup>2</sup>）<sup> -1</sup> · a<sup>-1</sup>; primary productivity, 23.2 t · （hm<sup>2</sup>）<sup> -1</sup>· a<sup>-1</sup>; litter-fall, 9.2t ·（hm<sup>2</sup>）<sup>-1</sup>·a<sup>-1</sup>; death tree, 3.9 t·（hm<sup>2</sup>）<sup>-1</sup>· a<sup>-1</sup>, animal-eating, 0.6 t·（hm<sup>2</sup>）<sup> -1</sup> · a<sup>-1</sup>; net productivity, 9.5 t·（hm<sup>2</sup>）<sup>-1</sup>· a<sup>-1</sup>.展开更多
东秦岭钼矿带是中国最主要的钼矿带,钼矿呈近东西向展布。钼矿以斑岩型为主,从南到北,钼矿带钼矿大体有斑岩Cu-Mo矿、斑岩Mo矿、斑岩Au-Mo矿分带的趋势,与从俯冲带到克拉通边缘斑岩Cu矿、斑岩Cu-Mo矿、斑岩Mo矿依次发育的分带现象相似,...东秦岭钼矿带是中国最主要的钼矿带,钼矿呈近东西向展布。钼矿以斑岩型为主,从南到北,钼矿带钼矿大体有斑岩Cu-Mo矿、斑岩Mo矿、斑岩Au-Mo矿分带的趋势,与从俯冲带到克拉通边缘斑岩Cu矿、斑岩Cu-Mo矿、斑岩Mo矿依次发育的分带现象相似,表明钼矿的形成与扬子地块向华北地块俯冲有关。根据钼矿Re-Os年龄资料统计钼矿分为～220Ma、～140Ma和～110Ma三期,其成矿动力学背景分别为碰撞造山、碰撞造山后伸展和中国东部岩石圈减薄。钼矿流体包裹体均一温度介于83℃～424℃;平衡盐度介于0.61%～42.5%。流体包裹体水的δD介于-100‰～-40‰,δ18OH2O介于-4.3‰～8.7‰;且从成矿早期到晚期流体包裹体水的δD和δ18OH2O分别变小,表明钼矿的成矿流体主要来源于岩浆,后期有大气水的加入。东秦岭钼矿的铅同位素为206Pb/204Pb=17.12～17.89、207Pb/204Pb=15.23～15.70、208Pb/204Pb=37.57～39.10,与区域下地壳铅同位素一致;小斑岩体的Sri=0.705～0.714,δ18O=7.2‰～12.1‰,与I型花岗岩的锶、氧同位素相一致,表明钼矿的成矿物质主要来源于下地壳。东秦岭钼矿带的钼资源总量占中国钼资源的51%以上,美国克莱马克斯-亨德森钼矿带(Climax and Hender-son)的钼资源总量占美国钼矿资源的42%以上,美国和中国的钼资源在世界上的排名分别为第一和第二位,两钼矿带是世界钼资源高度集中的两个区域。克莱马克斯-亨德森钼矿带位于美国中西部、美洲克拉通西缘;钼矿主要形成于33～18Ma,稍晚于拉腊米(Laramide,75～54Ma)陆内造山运动;钼矿形成于碰撞造山后伸展环境。东秦岭与克莱马克斯两钼矿带相比:1)两钼矿带都位于克拉通边缘;2)两钼矿带的钼矿化都形成于陆内碰撞造山之后的伸展环境,与成矿有关的岩体都为花岗斑岩小岩体;3)两钼矿带钼矿的辉钼矿平均丰度分别为0.073%～0.140%和0.171%～0.264%,东秦岭钼矿的丰度明显较低;4)两钼矿带钼矿的辉钼矿成矿温度分别为300～400℃和460～600℃,东秦岭钼矿明显较低,反映与其成矿有关的岩浆的侵位深度较浅。通过两钼矿带间的综合对比得出:克拉通边缘经历陆内碰撞造山作用后在伸展环境下有利于斑岩钼矿的形成;与钼矿有关的小斑岩体岩浆的侵位深度影响钼矿中辉钼矿的丰度,岩浆的侵出深度越深其钼矿的辉钼矿品位越高。展开更多
From Oedipus the King and Thunderstorm, the masterpiece of tragedies, the author intended to throw light on the Jocasta and Fanyi, two female characters bearing sharply different cultural, social and religious mark, t...From Oedipus the King and Thunderstorm, the masterpiece of tragedies, the author intended to throw light on the Jocasta and Fanyi, two female characters bearing sharply different cultural, social and religious mark, though, depicted similarly as unacceptable roles obsessed with the freak love and strong lust drive for their sons. Thus from the angle of respective emotional motivation, the author made a reflection on Jocasta's crime and Fanyi's punishment.展开更多
基金Project supported by the National Natural Science Foundation of China, the Field Foundation and Youth Science Foundation of the Chinese Academy of Sciences.
文摘The biomass, primary productivity and energy use efficiency of photosysthetically active radiation of climax vegetation on Dinghu Mountains, in low subtropical were studied with the tree-harvested, litter gather, CO, analysis methods, etc. The results show that the leaf area index of the community is 17; biomass, 363 t·（hm<sup>2</sup>）<sup> -1</sup> · a<sup>-1</sup>, total productivity, 132 t· （hm<sup>2</sup>）<sup> -1</sup> · a<sup>-1</sup>; primary productivity, 23.2 t · （hm<sup>2</sup>）<sup> -1</sup>· a<sup>-1</sup>; litter-fall, 9.2t ·（hm<sup>2</sup>）<sup>-1</sup>·a<sup>-1</sup>; death tree, 3.9 t·（hm<sup>2</sup>）<sup>-1</sup>· a<sup>-1</sup>, animal-eating, 0.6 t·（hm<sup>2</sup>）<sup> -1</sup> · a<sup>-1</sup>; net productivity, 9.5 t·（hm<sup>2</sup>）<sup>-1</sup>· a<sup>-1</sup>.
文摘东秦岭钼矿带是中国最主要的钼矿带,钼矿呈近东西向展布。钼矿以斑岩型为主,从南到北,钼矿带钼矿大体有斑岩Cu-Mo矿、斑岩Mo矿、斑岩Au-Mo矿分带的趋势,与从俯冲带到克拉通边缘斑岩Cu矿、斑岩Cu-Mo矿、斑岩Mo矿依次发育的分带现象相似,表明钼矿的形成与扬子地块向华北地块俯冲有关。根据钼矿Re-Os年龄资料统计钼矿分为～220Ma、～140Ma和～110Ma三期,其成矿动力学背景分别为碰撞造山、碰撞造山后伸展和中国东部岩石圈减薄。钼矿流体包裹体均一温度介于83℃～424℃;平衡盐度介于0.61%～42.5%。流体包裹体水的δD介于-100‰～-40‰,δ18OH2O介于-4.3‰～8.7‰;且从成矿早期到晚期流体包裹体水的δD和δ18OH2O分别变小,表明钼矿的成矿流体主要来源于岩浆,后期有大气水的加入。东秦岭钼矿的铅同位素为206Pb/204Pb=17.12～17.89、207Pb/204Pb=15.23～15.70、208Pb/204Pb=37.57～39.10,与区域下地壳铅同位素一致;小斑岩体的Sri=0.705～0.714,δ18O=7.2‰～12.1‰,与I型花岗岩的锶、氧同位素相一致,表明钼矿的成矿物质主要来源于下地壳。东秦岭钼矿带的钼资源总量占中国钼资源的51%以上,美国克莱马克斯-亨德森钼矿带(Climax and Hender-son)的钼资源总量占美国钼矿资源的42%以上,美国和中国的钼资源在世界上的排名分别为第一和第二位,两钼矿带是世界钼资源高度集中的两个区域。克莱马克斯-亨德森钼矿带位于美国中西部、美洲克拉通西缘;钼矿主要形成于33～18Ma,稍晚于拉腊米(Laramide,75～54Ma)陆内造山运动;钼矿形成于碰撞造山后伸展环境。东秦岭与克莱马克斯两钼矿带相比:1)两钼矿带都位于克拉通边缘;2)两钼矿带的钼矿化都形成于陆内碰撞造山之后的伸展环境,与成矿有关的岩体都为花岗斑岩小岩体;3)两钼矿带钼矿的辉钼矿平均丰度分别为0.073%～0.140%和0.171%～0.264%,东秦岭钼矿的丰度明显较低;4)两钼矿带钼矿的辉钼矿成矿温度分别为300～400℃和460～600℃,东秦岭钼矿明显较低,反映与其成矿有关的岩浆的侵位深度较浅。通过两钼矿带间的综合对比得出:克拉通边缘经历陆内碰撞造山作用后在伸展环境下有利于斑岩钼矿的形成;与钼矿有关的小斑岩体岩浆的侵位深度影响钼矿中辉钼矿的丰度,岩浆的侵出深度越深其钼矿的辉钼矿品位越高。
文摘From Oedipus the King and Thunderstorm, the masterpiece of tragedies, the author intended to throw light on the Jocasta and Fanyi, two female characters bearing sharply different cultural, social and religious mark, though, depicted similarly as unacceptable roles obsessed with the freak love and strong lust drive for their sons. Thus from the angle of respective emotional motivation, the author made a reflection on Jocasta's crime and Fanyi's punishment.
