基于定量遥感的石家庄市域热环境变化分析

发布时间：2018-04-13 00:08

本文选题：定量遥感 + TM卫星影像　；参考：《干旱区研究》2014年06期

【摘要】：基于影像的反演算法,以2004年8月30日和2010年8月15日石家庄市域的TM卫星影像数据为基础,在几何校正、辐射校正和大气校正之后,利用其第6波段数据反演了全市域的热场状况,并利用相对亮温对全市域和不同生态分区的热场变化进行了定量分析。结果表明:2004—2010年,市域热场在空间分布上呈现了两大两小的特点,一方面,市区范围内和平山县沿滹沱河河谷一带的热场强度有所增加;另一方面,市域的西南角赞皇县、灵寿县与行唐县的北部丘陵地区,热场强度呈减小趋势。相对亮温统计结果表明,全市域的热场强度主要以绿岛和弱热岛为主,二者在2004年和2010年占全市面积的92.33%和88.24%。总体看来,热场强度有所增加。对不同生态区的分析结果表明,西部山区和中部丘陵生态经济林涵养区的变化最为显著,均呈强热岛和极强热岛增加的特点。从热场变化的原因分析,除了全球气候变暖的影响与区域土地利用/覆盖变化外,城建区面积的不断扩张、全社会固定资产投资和房地产投资的迅猛增长,也是引起市域热场(尤其是城市热岛效应)增强的重要原因。
[Abstract]:Based on the image inversion algorithm, based on the TM satellite image data of Shijiazhuang City on August 30, 2004 and August 15, 2010, after geometric correction, radiation correction and atmospheric correction,Based on the data of the 6th band, the thermal field in the whole city is inversed, and the variation of the thermal field in the whole city and different ecological zones is analyzed quantitatively by using the relative bright temperature.The results show that the spatial distribution of the urban thermal field shows two characteristics: on the one hand, the intensity of the thermal field in the urban area and along the Hutuo River valley in Pingshan County has increased; on the other hand, in Zanhuang County, the southwest corner of the city, the intensity of the thermal field has increased.The thermal field intensity of Lingshou County and Xingtang County is decreasing in the northern hilly area.The results of relative bright temperature statistics show that the thermal field intensity of the whole city is mainly green island and weak heat island, which account for 92.33% and 88.24% of the whole city area in 2004 and 2010.Overall, the intensity of the thermal field has increased.The results of analysis on different ecological regions showed that the change of ecological-economic forest conservation areas in the western mountainous area and the central hilly region was the most significant, with the characteristics of strong heat island and extremely strong heat island increasing.From the analysis of the causes of thermal field change, besides the influence of global climate warming and the change of regional land use / cover, the area of urban construction area is expanding continuously, and the investment in fixed assets and real estate of the whole society is increasing rapidly.It is also an important reason for the enhancement of the urban heat field (especially the urban heat island effect).
【作者单位】：中国林业科学研究院林业研究所;国家林业局林木培育重点实验室;国家林业局城市森林研究中心;
【基金】：国家林业公益性行业科研专项(201404301) 国家科技部“十二五”科技支撑项目(2011BAD38B03)
【分类号】：X16;X87

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