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| 关于沙漠环境演变几种研究指标的探讨 | |
| 引用本文： | 凌智永,李志忠,罗磊,王少朴.关于沙漠环境演变几种研究指标的探讨[J].云南地理环境研究,2009,21(2):86-91. |
| 作者姓名： | 凌智永 李志忠 罗磊 王少朴 |
| 作者单位： | 1. 新疆师范大学,地理科学与旅游学院,新疆,乌鲁木齐,830054 2. 新疆师范大学,地理科学与旅游学院,新疆,乌鲁木齐,830054;福建师范大学,地理科学学院,福建,福州,3500073 3. 新疆林业科学院,信息中心,新疆,乌鲁木齐,830000 |
| 基金项目： | 国家科技支撑计划，新疆维吾尔自治区自然科学基金 |
| 摘 要： | 沙漠环境演变研究过程中，地层沉积序列和沙漠环境信息的重建是其研究重点。大量关于沙漠环境演变研究所取得的成果显示：在沙漠沉积地层时间序列测定中，光释光（OSL）测年比较适用，但其在高分辨率方面欠缺、精度稍差，实际研究中应该视实际情况把OSL测年与^14 C测年结合使用。在环境代用指标选择方4面，沉积粒度及地球化学元素比较适合沙漠环境演变研究；磁化率、碳酸钙、有机碳作为环境代用指标有一定的局限性，但研究中仍多使用；孢粉分析在较湿润区域的环境演变研究中作为环境代用指标效果较好，但在沙漠这个极度干旱、植被稀少的环境下适用性不强。 |
| 关 键 词： | 沙漠 环境演变 环境代用指标 古气候环境 |
THE DISCUSSION ABOUT THE SEVERAL RESEARCH INDICATORS OF THE DESERT ENVIRONMENT EVOLUTION |
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| LING Zhi-yong,LI Zhi-zhong,LUO Lei,WANG Shao-pu.THE DISCUSSION ABOUT THE SEVERAL RESEARCH INDICATORS OF THE DESERT ENVIRONMENT EVOLUTION[J].Yunnan Geographic Environment Research,2009,21(2):86-91. | |
| Authors: | LING Zhi-yong LI Zhi-zhong LUO Lei WANG Shao-pu |
| Institution: | LING Zhi-yong, LI Zhi-zhong, LUO Lei, WANG Shao-pu ( 1. Geography Science and Tourism College of Xinjiang Normal University, Urumqi 830054, Xinjiang, China; 2. Geography Science College of Fujian Normal University, Fuzhou 350007, Fujian, China; 3. Information Center of Xinjiang Academy of Forestry, Urumqi 830000, Xinjiang, China) |
| Abstract: | The sedimentary sequence and reconstruction of the desert environment information are Focuses in the the desert environment evolution. The results were that： The OSL is the suitable method to determine the time series of desert sedimentary strata, but it is a little lack in the high-resolution. In the actual study, combined use of the OSL and the ~4C dating is better and reduce the their shortages. In the selection of environmental proxy, the sediment grain size and geochemical elements are more suitable for the study on the evolution of the desert envi- ronment. Secondly, the magnetic susceptibility, calcium carbonate and organic carbon have their limitations, but they are still used as the proxy in the desert environmental studies. Although the pollen analysis can be used as a proxy for research in the moist region, it is not suitable in the desert region where is extreme drought and scarce vegetation. |
| Keywords: | desert environmental evolution environmental proxies palaeoclimate and palaeoenvironment |
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