Huadianba in the Cangshan Mountain, a region where key ecosystem types and species under prior protection are concentrated, is the first choice for the comprehensive protection and development of biodiversity. In this...Huadianba in the Cangshan Mountain, a region where key ecosystem types and species under prior protection are concentrated, is the first choice for the comprehensive protection and development of biodiversity. In this study, natural conditions, location and current protection and development of Huadianba were introduced, major problems emerging in the protection and management were summarized, and pertinent measures were proposed as a reference for the scientific development and protection of Huadianba.展开更多
The area around Cangshan Mountain, located on the southeastern fringes of the Tibetan Plateau, is a key region in terms of revealing the processes involved in the uplifting of the Tibetan Plateau, plus its environment...The area around Cangshan Mountain, located on the southeastern fringes of the Tibetan Plateau, is a key region in terms of revealing the processes involved in the uplifting of the Tibetan Plateau, plus its environmental effects. Based on systemic field and laboratory work, this study uncovers the step-like geomorphologic structure, characteristics and processes revealed in the Cangshan Mountain area, to argue for the formation and development of the Quaternary glaciation there. The results indicate that there were two paleo-glaciations in the area, which were the early and late Dali Glaciations, and that these occurred during the time periods 5.76 × 104 aBP and 1.6 × 104 aBP respectively, being the southernmost paleo-glaciations to have taken place in China. Two step-like paleo-planation surfaces were formed vertically at the mountain (that is, at the summit of Cangshan, which is 3800 to 4000 m above sea level (a.s.l) in height;and at the paleo-glacial and peri-glacial active zones: 3700 to 3900 m a.s.l. in height). Meanwhile three widespread erosion surfaces can be identified at about 2900 to 3500 m, 3000 to 3100 m and 2450 to 2550 m a.s.l. in height;three fluvial fans developed on the landform at about 2250 to 2200 m, 2200 to 2150 m and 2150 to 2100 m a.s.l. in height respectively, and lacustrine relief developed surrounding the Erhai Lake.展开更多
为筛选出利用农业秸秆高效生产微生物蛋白(MSCP)的菌株并探究其液体发酵最佳条件,达到减少饲料中豆粕蛋白使用的目的,本研究从大理苍山沧浪峰采集土壤进行分离,筛选获得一株能利用秸秆碳源生长的菌株S303。经形态学观察和26S r DNA序列...为筛选出利用农业秸秆高效生产微生物蛋白(MSCP)的菌株并探究其液体发酵最佳条件,达到减少饲料中豆粕蛋白使用的目的,本研究从大理苍山沧浪峰采集土壤进行分离,筛选获得一株能利用秸秆碳源生长的菌株S303。经形态学观察和26S r DNA序列分析来鉴定该菌株,并对其最适秸秆碳源、最适温度、最适pH进行测定,探究该菌在最适液体发酵条件下的微生物蛋白产量。结果表明:筛选到一株高效降解秸秆生产微生物蛋白的菌株,经鉴定为清酒假丝酵母菌株,命名为Candida sake S303。菌株S303的最适发酵碳源为玉米秸秆,最适发酵温度和pH分别为25℃和7,最适发酵周期为14 d。在最佳发酵条件下,2%接种量的微生物蛋白的干重产量为1485.91 mg/L。以上结果预示着菌株S303可以有效利用农业秸秆生产微生物蛋白,其在饲料和食品等方面具有重大应用前景。展开更多
文摘Huadianba in the Cangshan Mountain, a region where key ecosystem types and species under prior protection are concentrated, is the first choice for the comprehensive protection and development of biodiversity. In this study, natural conditions, location and current protection and development of Huadianba were introduced, major problems emerging in the protection and management were summarized, and pertinent measures were proposed as a reference for the scientific development and protection of Huadianba.
文摘The area around Cangshan Mountain, located on the southeastern fringes of the Tibetan Plateau, is a key region in terms of revealing the processes involved in the uplifting of the Tibetan Plateau, plus its environmental effects. Based on systemic field and laboratory work, this study uncovers the step-like geomorphologic structure, characteristics and processes revealed in the Cangshan Mountain area, to argue for the formation and development of the Quaternary glaciation there. The results indicate that there were two paleo-glaciations in the area, which were the early and late Dali Glaciations, and that these occurred during the time periods 5.76 × 104 aBP and 1.6 × 104 aBP respectively, being the southernmost paleo-glaciations to have taken place in China. Two step-like paleo-planation surfaces were formed vertically at the mountain (that is, at the summit of Cangshan, which is 3800 to 4000 m above sea level (a.s.l) in height;and at the paleo-glacial and peri-glacial active zones: 3700 to 3900 m a.s.l. in height). Meanwhile three widespread erosion surfaces can be identified at about 2900 to 3500 m, 3000 to 3100 m and 2450 to 2550 m a.s.l. in height;three fluvial fans developed on the landform at about 2250 to 2200 m, 2200 to 2150 m and 2150 to 2100 m a.s.l. in height respectively, and lacustrine relief developed surrounding the Erhai Lake.
