| 热伊莱·卡得尔,玉素甫江·如素力,阿迪来·乌甫,艾则孜提约麦尔·麦麦提,姜红.2001—2014年博斯腾湖流域地表温度时空分异特征及归因[J].干旱地区农业研究,2018,36(1):257~265 |
| 2001—2014年博斯腾湖流域地表温度时空分异特征及归因 |
| Spatio-temporal variation and attribution of land surface temperature in Bosten Lake Basin during 2001—2014 |
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| DOI：10.7606/j.issn.1000-7601.2018.01.38 |
| 中文关键词: 地表温度 博斯腾湖流域 MODIS 土地利用/土地覆盖变化 时空格局变化 |
| 英文关键词:land surface temperature Bosten Lake Basin MODIS LUCC spatio-temporal variation |
| 基金项目:国家自然科学基金项目“内陆湖泊流域水循环过程模拟与调控研究”(41461006)；化环境下干旱区湖泊流域水-生态-经济复合系统的协同进化与发展模式研究（U1703341）；国家自然科学基金项目“内陆地震热异常的形成机理与分离研究”（41764003） |
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| 中文摘要: |
| 以3S技术为支持，在MODIS地表温度产品精度验证的基础上，采用空间分析、统计和趋势分析法，探讨了博斯腾湖流域2001—2014年不同土地利用类型下地表温度的差异性变化特征，辨析了地表温度的时空分异特征及归因。结果表明：(1) MODIS LST产品在博斯腾湖流域的精度（平均R2=0.96）总体上满足要求，可用于地表温度的时空分布研究。(2) 流域内平均地表温度的年际波动较大，以2002、2007年和2013年尤为突出，分别超出多年平均值0.45℃、0.59℃和0.29℃；年内地表温度呈单峰型分布，季节性变化明显，地表温度高值主要集中在3—8月，最高值出现在7月。(3) 地表温度空间格局呈东南高于西北的变化趋势，尤其在植被覆盖度低的区域地表温度较大；土地利用覆被类型影响着地表温度的时空分布状况，各种土地覆盖类型的年均地表温度排序依次为沙漠>裸土>旱地>稀疏草地>湖泊>草原>草本沼泽>草甸。(4) 博斯腾湖流域地表温度变化趋势呈严重减少、轻微减少、基本不变、轻微增加和显著增加的区域面积分别占5%、13%、39%、36%和7%，以基本不变和轻微增加为主。地表温度的时空变化不仅受大尺度气候变化的影响，还主要受土地类型性质等差异的影响，二者共同作用构成了不同地理区域及景观的温度场格局，绿色植被对区域地表温度的时空分布具有重要的调节作用。 |
| 英文摘要: |
| In this paper, the spatio-temporal variation and attribution of land surface temperature in Bosten Lake Basin were studied by methods of spatial analysis, geo-statistical and trend analysis using LST product of MODIS, LUCC data and observed LST data from 2001 to 2014. The results indicated that: (1) MODIS LST product was enough to apply for the analysis of spatio-temporal distribution characteristics of land surface temperature in Bosten Lake Basin(mean R2=0.96); (2) Inter-annual variation of LST was obvious, especially in the year of 2002, 2007 and 2013, and exceeded the multiannual mean LST value by 0.45℃, 0.59℃ and 0.29℃ respectively. Furthermore, the seasonal variation of LST showed a unimodel pattern, and its peak value occured in July. (3) The LST variation of southeast was higher than the northwest areas, especially in the low vegetation coverage areas. The spatial distribution of LST was related to land cover types, and the order of LST intensity by land cover types was desert＞bare soil＞dry land＞sparse grassland＞lake＞grass land＞herbaceous swamp＞meadow; (4) According to the LST variation characteristics of Bosten Lake Basin, the LST trends of severely reduced, slightly reduced, basically unchanged, slightly increased and significantly increased, and their area accounted for 5%, 13%, 39%, 36% and 7% respectively. The spatio-temporal variation of LST not only was influenced by the global climate change, but also effected by temperature field of different LUCC in different district and zone. Vegetation cover and its vertical distribution contributed to the spatio-temporal distribution of regional LST. |
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