| 新疆玛纳斯湖景观演化及其生态环境效应 |
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| 引用本文： | 程维明,周成虎,李建新.新疆玛纳斯湖景观演化及其生态环境效应[J].第四纪研究,2001,21(6):560-565,T001,T002. |
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| 作者姓名： | 程维明 周成虎 李建新 |
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| 作者单位： | 中国科学院地理科学与资源研究所,资源与环境信息系统国家重点实验室,北京,100101 |
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| 基金项目： | 国家重点基础研究发展规划 (批准号 :G1 9990 4 35 0 7)项目 |
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| 摘 要： | 遥感影像以多分辨率记录了地表的覆盖特征。影像的空间分辨率限定了遥感对地观测的最小单元。地理环境特征监测的基本空间尺度的适宜性对遥感提出了多分辨率的需求 ,同时 ,多种全球变化模型对土地覆盖类型及空间格局需求的尺度也不同。因此 ,作为模型重要参数的土地覆盖特征的多分辨率遥感监测对满足不同模型的需求以及对利用实测数据进行尺度转换研究是重要的。本文在遥感、地理信息系统支持下 ,从遥感数据采集的空间分辨率的角度定量化判断空间分辨率放大过程对土地覆盖特征监测的影响。研究区域选定在ＮＥＣＴ(中国东北样带 )的西部 (42°～ 46°Ｎ、1 1 0°～1 2 1°Ｅ)。采用美国地球资源观测系统数据中心提供的
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| 关 键 词： | 景观生态 环境效应 玛纳斯湖 |
| 收稿时间： | 2001-06-09 |
| 修稿时间： | 2001-06-12 |
EVOLUTION OF MANAS LAKE LANDSCAPE IN XINJIANG AND ITS ECO-ENVIRONMENTAL EFFECT |
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| Cheng Weiming,Zhou Chenghu,Li Jianxin.EVOLUTION OF MANAS LAKE LANDSCAPE IN XINJIANG AND ITS ECO-ENVIRONMENTAL EFFECT[J].Quaternary Sciences,2001,21(6):560-565,T001,T002. |
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| Authors: | Cheng Weiming Zhou Chenghu Li Jianxin |
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| Institution: | State Key Laboratory of Resource and Environmental Information System, Institute of Geographical Sciences and Natural Resources Research, CAS, Beijing 100101 |
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| Abstract: | Based on universal principals of landscape ecology, by combined with previous research results, and using the Geological Information System (GIS) and Remote Sensing (RS) methods, the evolution process of Manas Lake landscape since the Quaternary Period was discussed, and then the natural and manmade causes of its dynamic variation were analyzed. The main causes of the evolution are geotectonic event, river shifting and climate change. In the last 50 years, many plain lakes were constructed, and a large amount of river water was ducted into irrigation channels or plain lakes, which led to drying up of Manas Lake. There are 3 negative effects on the surrounding landscape and eco-environments to be derived from the drying up: destroying the surrounding vegetation; making animals to decrease; and leading to the severe salinization of the middle reaches of Manas River. But the drying up of Manas Lake feeds about 1×10 6 people and the Shihezi oasis area has always become highlight in the northern industry zone of Xinjiang. Some constructive ways how to protect the eco-environment of oases and deserts were put forward on the point of view of rationally using water resources. |
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| Keywords: | landscape ecology environment effect Manas Lake |
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