干旱区生态环境知识资源中心(Arid): 干旱区地表温度和热岛效应演变研究---以宁夏沿黄城市带为例

Arid

	干旱区地表温度和热岛效应演变研究---以宁夏沿黄城市带为例
其他题名	Evolution of surface temperature and heat island effect in arid areas:A case of city belt along the Yellow River in Ningxia
	孙灏; 马立茹; 蔡创创; 黄涛; 吕林涛; 阮琳; 陈伟
来源期刊	干旱区地理
ISSN	1000-6060
出版年	2020
卷号	43 期号:3 页码:694-705
中文摘要	宁夏沿黄城市带位于宁夏东北部,不仅是干旱地区地理研究的重点区域,也是宁夏经济发展的核心区域。基于2000-2018年的MODIS地表温度、土地覆盖类型以及植被覆盖率数据,通过计算热岛比例指数(URI),利用Mann-Kendall非参数检验及Sen's斜率估计法,对宁夏沿黄城市带近20 a白天和夜间的地表温度(LST)和热岛效应时间变化进行分析。结果表明:(1)近20 a来,宁夏沿黄城市带大部分地区LST变化不显著,但在植被覆盖率增加区域,白天LST显著减小而夜间LST显著上升;植被覆盖率减小区域与之相反;夜间LST变化幅度强于白天。(2)宁夏沿黄城市带的热岛效应通常在白天较弱、在夜间较强;白天和夜间时刻的城市热岛效应在一年内呈现不同的季节变化特点,白天春冬较强,夜间夏季较强;过去近20 a,宁夏沿黄城市带白天热岛效应呈现稍微减弱趋势,夜间热岛效应呈现稍微增强趋势,但变化趋势均不显著。(3)从植被覆盖率和地物类型两个影响因素的研究表明,植被覆盖率是影响地表温度变化的重要因素,城建区与郊区主要地物温差的改变是城市热岛强度变化的重要原因。从长时间序列变化的角度详细分析干旱区城市热岛的特征和变化原因,可为干旱区城市热岛带来的环境问题治理提供参考,也为研究干旱区热岛提供了借鉴。
英文摘要	The city belt along the Yellow River in Ningxia is located at the northeast of Ningxia Province,China.It is both a key area for geographical research in arid areas and the core of economic development in Ningxia.As an important climatic phenomenon related to the process of urbanization, the heat island effect has brought much inconvenience to human life, for which reason it has become a major topic in current urbanization research.Most previous studies have been conducted on wet climate regions,and there are relatively few studies on arid and semi-arid regions.Moreover, the time series used in previous studies has typically been short and their resolution low,hence the analysis of urban-heat-island trends and the reasons for their occurrence are not yet comprehensively understood.Based on MODIS surface temperature products, this paper uses the Mann-Kendall non-parametric test and Sen's slope estimation method to analyze the time trend of surface temperature during the past 20 years along city belt of the Yellow River.Combining MODIS surface temperature data with MODIS land cover type products,and introducing the urban-heat-island ratio index,daily and seasonal changes in the urban-heat-island effect along the city belt and their time series trends over the past 20 years were analyzed.The results show that the surface temperatures of most areas along the city belt in Ningxia have shown an upward trend,which is stronger during nighttime than daytime.An increase of surface coverage is an important reason for this trend.Compared with humid climates, the heat island effect along the city belt shows different daily and seasonal trends.At nighttime, the heat island effect is stronger than during the daytime and in over course of one year, the heat island effect is stronger in winter and spring at daytime but stronger in summer at nighttime.The heat island effect in the study areas shows a decreasing trend,whereas the nighttime heat island effect show an increasing trend,but the trend was not found to be significant.Finally,land and vegetation cover types were analyzed.To some extent,our results indicate that urbanization and surface coverage are equally important contributions to heat islands along the study area.Surface coverage increases during the daytime can weaken surface temperatures increases,while promoting such increases at night.Increased surface coverage can thus alleviate increases in surface temperature during the daytime.Urbanization does not necessarily promote the heat island effect during daytime,but sometimes mitigates its effect on low vegetation coverage areas, such as bare land.Nonetheless, the impact of urbanization on the heat island effect is more obvious at night.This study provides a direction for the management of arid areas and a reference for studies of temporal and spatial changes in surface temperature due to the heat island effect in other arid regions.It also gives guidance for studies concerning the influence of such phenomena in other arid regions.
中文关键词	城市热岛比例指数 ; Mann-Kendall非参数检验 ; Sen's斜率估计 ; 土地覆盖类型 ; 植被覆盖率
英文关键词	urban-heat-island ratio index Mann-Kendall nonparametric test Sen's slope estimation surface cover type surface vegetation coverage
类型	Article
语种	中文
收录类别	CSCD
WOS类目	Environmental Sciences & Ecology
WOS研究方向	Environmental Sciences & Ecology
CSCD记录号	CSCD:6765654
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/336700
作者单位	孙灏, 中国矿业大学(北京)地球科学与测绘工程学院, 北京 100083, 中国.; 马立茹, 中国矿业大学(北京)地球科学与测绘工程学院, 北京 100083, 中国.; 蔡创创, 中国矿业大学(北京)地球科学与测绘工程学院, 北京 100083, 中国.; 阮琳, 中国矿业大学(北京)地球科学与测绘工程学院, 北京 100083, 中国.; 陈伟, 中国矿业大学(北京)地球科学与测绘工程学院, 北京 100083, 中国.; 黄涛, 宁夏回族自治区遥感测绘勘查院(宁夏回族自治区遥感中心), 银川, 宁夏 750021, 中国.; 吕林涛, 宁夏回族自治区遥感测绘勘查院(宁夏回族自治区遥感中心), 银川, 宁夏 750021, 中国.
推荐引用方式 GB/T 7714	孙灏,马立茹,蔡创创,等. 干旱区地表温度和热岛效应演变研究---以宁夏沿黄城市带为例[J],2020,43(3):694-705.
APA	孙灏.,马立茹.,蔡创创.,黄涛.,吕林涛.,...&陈伟.(2020).干旱区地表温度和热岛效应演变研究---以宁夏沿黄城市带为例.干旱区地理,43(3),694-705.
MLA	孙灏,et al."干旱区地表温度和热岛效应演变研究---以宁夏沿黄城市带为例".干旱区地理 43.3(2020):694-705.