台吉乃尔盐湖景观格局变化遥感分析(1990-2015年)
The Variation of Landscape Pattern in Taijinar Salt Lake by Remote Sensing(1990-2015)
投稿时间:2018-03-09  修订日期:2018-07-27
DOI:
中文关键词:  台吉乃尔盐湖  景观格局 遥感  景观指数
英文关键词:Taijinar Salt Lake  Landscape pattern  Remote sensing  Landscape index
基金项目:国家自然科学基金委员会资助项目柴达木盆地盐湖资源自适应综合管理系统模型构建与决策系统研究(41471454)
作者单位邮编
陈奥 中国科学院青海盐湖研究所 810008
王建萍 中国科学院青海盐湖研究所 810008
陈亮 中国科学院青海盐湖研究所 
芦宝良 中国科学院青海盐湖研究所 
凌智永 中国科学院青海盐湖研究所 
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中文摘要:
      本文以1990年、2005年、2015年的台吉乃尔盐湖区Landsat遥感影像作为数据源,从景观格局的角度分析了台吉乃尔盐湖区近25年来的动态变化。首先借助遥感和地理信息技术提取各类景观的信息,然后选取景观斑块平均面积(MPS)、景观破碎度指数(FN)、香浓多样性指数(SHDI)进行计算分析,同时研究了不同景观类型的面积变化情况。结果表明:(1)台吉乃尔盐湖区景观空间格局以盐滩及荒漠景观为主要特征,自然景观所占的比重明显高于人为景观,人为景观所占比重呈增加趋势;(2)1990-2005年间,干盐滩、盐湖、荒漠为湖区主要景观,景观面积变化与景观格局变化主要受控于气候因素的影响,总体与各类型景观的变化幅度较小,景观多样性提高;(3)2005-2015年间,干盐滩、荒漠为湖区主要景观,盐湖大面积减少,景观面积变化与景观格局变化主要受控于人类活动的影响,景观多样性降低。
英文摘要:
      This study were used Landsat remote sensing images in 1990, 2005, and 2015 as the data sources and used the landscape pattern to discussed the Dynamic changes during the past 25 years in Taijinar Salt Lake. The exteaceted the landsapes infromation were used remote sensing and geographic information technology, then the MPS, FN and SHDI were selected for calculation and analysis, and also studied the areas changed in different types of landscape. The resulted indicated that: (1) The landscape spatial pattern of Taijinar Salt Lake were characterized by salt flats and desert landscapes. The proportion of natural landscapes was obviously higher than that of man-made landscapes,while the man-made landscapes were inceased during past 25 years; (2) The landscapes were main occupied by dry salt flats, salt lakes and deserts in Taijinar Salt Lake from 1990 to 2005, the climated were controlled landscape area and landscape pattern changed, all the types of landscape were less variation and landscape diversity increased; (3) The landscapes were occupied by dry salt flats and deserts from 2005 to 2015, the ereas of salt lake were decreased, the huaman activities were dominated the landscape area and landscape pattern variations, it was reduced in landscape diversity.
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