吉林省西部盐碱化区热力景观特征分析  

Analysis on the Thermal Landscape Features of Salinization Areas in West Jilin Province

作　　者：王德辉[1,2] 周慧杰[3] 王萌[2] 吴波[4] 董福湘[5] 

机构地区：[1]广州中海达卫星导航技术股份有限公司,广东广州511400 [2]中国科学院广州地球化学研究所地球系统科学与可持续发展研究中心,广东广州510640 [3]广西师范学院地理科学与规划学院,广西南宁530001 [4]赣南师范学院,江西赣州341000 [5]长春工程学院勘查与测绘学院,吉林长春130021

出　　处：《安徽农业科学》2015年第10期251-253,355,共4页Journal of Anhui Agricultural Sciences

基　　金：国家自然科学基金项目(4136102);吉林省环境保护科技项目(吉环科2010-26);广州市及番禺区博士后基金项目(125124)

摘　　要：吉林省西部地区的生态问题以湿地退化的盐碱化闻名,已严重影响到区域的生态环境与社会经济可持续发展。该区域的盐碱化是否会与国内外其他生态退化区一样,成为热力洼地型的盐尘暴源地,危及吉林省乃至黑龙江省的农业区的生态安全与社会经济的可持续发展,这个问题需进行必要的科学评估。利用2000-2013年的MODIS归一化植被指数、地表温度、雪盖等数据产品,采用长时间序列分析和地理空间相关性原理方法,计算了MODIS表征地表储热性能的昼夜地温指数。结果显示,盐碱化区域没有形成热力洼地,冬半年的雪盖和云的分布也显示盐碱退化区并未＂干涸＂。该区域需要注意控制好地下水水位,防止真正的热力洼地的出现。The well-known salinization of wetland degradation in West Jilin has seriously impacted the sustainable development of regional ecological environment and socio-economy. Careful scientific evaluation is needed to make it clear that whether these salinization areas could be- come the source of thermal depressions salt dust storms just like other ecological degradation areas in the world to jeopardize the sustainable development of eco-security and socio-economy of the agriculture areas in Jilin and even Heilongjiang. This study calculates MODIS day and night land surface temperature representing heat storage properties of the earth＇ s surface by using data products of 2000 -2013 like MODIS NDVI, land surface temperature and snow cover, applying long time series analysis and geospatial correlation methods. The result shows that thermal depressions have not formed in the salinization areas, and the distribution of snow cover and cloud in winter half year also shows the salinization areas have not dried up. This area is needed to well control the ground water level to avoid real thermal depressions.

关 键 词：盐碱化 热力洼地 沙尘暴 遥感 吉林省西部 

分 类 号：S181.3[农业科学—农业基础科学]