The Suichang mine is the largest silicified vein-type silver-gold mineralization system in Southeast China, whose ore bodies are controlled by shear zones developing in Lower Proterozoic gneiss terrene with initial mi...The Suichang mine is the largest silicified vein-type silver-gold mineralization system in Southeast China, whose ore bodies are controlled by shear zones developing in Lower Proterozoic gneiss terrene with initial migmatization, which is covered by Upper Jurassic and Lower Cretaceous volcanic rock system and cut by acidic igneous veins of Jurassic and Cretaceous. The conclusions are as follows: (1) The ore-forming fluid is defined as superhigh tectonic-metamorphic fluid on the base of : 1 (D)-(18O) values 2 fluid inclusions;3 trace elements of pyrite from ores. (2) The shear zone silicified orebod-ies occurred in proterozoic, Jurassic and Cretaceous, which have been transforms in part by ore-bearing comb quartz vein of volcanism.展开更多
黑麂,为我国特有动物,被公认为目前世界上最珍稀的鹿科动物之一。为了更好地保护黑麂这一珍稀的濒危野生动物,基于黑麂线粒体控制区序列对遂昌分布中心的3个黑麂种群的遗传多样性和基因流进行了研究。结果显示,3个种群的36个个体中有13...黑麂,为我国特有动物,被公认为目前世界上最珍稀的鹿科动物之一。为了更好地保护黑麂这一珍稀的濒危野生动物,基于黑麂线粒体控制区序列对遂昌分布中心的3个黑麂种群的遗传多样性和基因流进行了研究。结果显示,3个种群的36个个体中有13个变异位点,占分析序列长度的2.71%,且这13个变异位点皆为碱基置换,并未出现碱基插入或缺失的现象,并由此定义了12个单倍型。遗传多样性检测结果显示遂昌种群具有最高的遗传多样性,应予以优先保护。从Tajima′sD和Fu and Li′sD值的估算结果来看,这3个黑麂种群相对于中性进化的歧异度并没有明显的偏离(P>0.1),没有明显的证据显示这3个黑麂种群间存在很强的平衡选择。3个种群间基因流Nm均大于1,这3个黑麂种群间存在着较为丰富的基因流。3个黑麂种群单倍型间的序列差异为0.009,这表明这3个黑麂种群的单倍型未出现分化。展开更多
台湾杉属的秃杉和台湾杉是我国特有的珍稀树种。1992 ～1993 年在浙江省遂昌县对二树种进行了引种造林试验。结果表明, 二树种速生, 适应性良好。秃杉6年生平均树高达3-61 m , 地径8-4 cm ; 台湾杉5 年生平均树高达2-54 m , 平均地径5-0...台湾杉属的秃杉和台湾杉是我国特有的珍稀树种。1992 ～1993 年在浙江省遂昌县对二树种进行了引种造林试验。结果表明, 二树种速生, 适应性良好。秃杉6年生平均树高达3-61 m , 地径8-4 cm ; 台湾杉5 年生平均树高达2-54 m , 平均地径5-0 cm , 与当地主栽树种杉木速丰林生长速度相仿。秃杉和台湾杉在遂昌县引种已取得初步成功。表2展开更多
基金Chinese Gold Management. Office (No.93-45-33) and Zhejiag Metallurgical (No. 98-27).
文摘The Suichang mine is the largest silicified vein-type silver-gold mineralization system in Southeast China, whose ore bodies are controlled by shear zones developing in Lower Proterozoic gneiss terrene with initial migmatization, which is covered by Upper Jurassic and Lower Cretaceous volcanic rock system and cut by acidic igneous veins of Jurassic and Cretaceous. The conclusions are as follows: (1) The ore-forming fluid is defined as superhigh tectonic-metamorphic fluid on the base of : 1 (D)-(18O) values 2 fluid inclusions;3 trace elements of pyrite from ores. (2) The shear zone silicified orebod-ies occurred in proterozoic, Jurassic and Cretaceous, which have been transforms in part by ore-bearing comb quartz vein of volcanism.
文摘黑麂,为我国特有动物,被公认为目前世界上最珍稀的鹿科动物之一。为了更好地保护黑麂这一珍稀的濒危野生动物,基于黑麂线粒体控制区序列对遂昌分布中心的3个黑麂种群的遗传多样性和基因流进行了研究。结果显示,3个种群的36个个体中有13个变异位点,占分析序列长度的2.71%,且这13个变异位点皆为碱基置换,并未出现碱基插入或缺失的现象,并由此定义了12个单倍型。遗传多样性检测结果显示遂昌种群具有最高的遗传多样性,应予以优先保护。从Tajima′sD和Fu and Li′sD值的估算结果来看,这3个黑麂种群相对于中性进化的歧异度并没有明显的偏离(P>0.1),没有明显的证据显示这3个黑麂种群间存在很强的平衡选择。3个种群间基因流Nm均大于1,这3个黑麂种群间存在着较为丰富的基因流。3个黑麂种群单倍型间的序列差异为0.009,这表明这3个黑麂种群的单倍型未出现分化。
文摘台湾杉属的秃杉和台湾杉是我国特有的珍稀树种。1992 ～1993 年在浙江省遂昌县对二树种进行了引种造林试验。结果表明, 二树种速生, 适应性良好。秃杉6年生平均树高达3-61 m , 地径8-4 cm ; 台湾杉5 年生平均树高达2-54 m , 平均地径5-0 cm , 与当地主栽树种杉木速丰林生长速度相仿。秃杉和台湾杉在遂昌县引种已取得初步成功。表2
