干旱区生态环境知识资源中心(Arid): 宁夏平原湿地面积动态演变对局地气候效应的影响

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	宁夏平原湿地面积动态演变对局地气候效应的影响
其他题名	Influence of Dynamic Evolution of Wetland Area on Local Climate Effect in Ningxia Plain
	王豫; 赵小艳; 李艳春; 王咏薇; 朱婷婷
来源期刊	生态环境学报
ISSN	1674-5906
出版年	2018
卷号	27 期号:7 页码:1251-1259
中文摘要	为了解湿地生态系统恢复与保护工作启动前后,具有丰富湿地资源的宁夏平原湿地面积的动态演变对局地气候效应的影响,更好地利用湿地资源缓解半干旱地区气候恶化的问题,选用19992016年共7景Landsat/TM(ETM+,OLI,TRIS)遥感数据监测宁夏平原湿地面积的动态变化,基于SEBAL模型反演地表热通量并分析湿地的局地气候效应。结果表明,(1)近17年来,研究区河流湿地面积减少了20.48 km~2,非河流湿地面积增加了73.88 km~2,总湿地面积变化增加了1.86%,湿地由修复前的零散状分布状演变为修复后的大面积连通状。(2)修复后湿地的降温效应显著提高,以典型湿地沙湖为例,暖季沙湖对局地1 500 m范围内有显著降温作用,最大降温幅度比修复前增加了0.7 ℃;冷季沙湖对局地600 m范围内有显著降温作用,最大降温幅度比修复前增加了0.1 ℃。(3)湿地修复后,研究区感热通量整体呈下降趋势,潜热通量整体呈上升趋势,总湿地面积的增加使得研究区暖季整体感热值下降了25~62 W·m~(-2),整体潜热值提高了47~114 W·m~(-2);冷季整体感热通量下降了6~43 W·m~(-2),潜热值提高了21~68 W·m~(-2)。湿地的波文比倒数分布呈暖季>冷季的时间变化规律。综上,湿地对城市热环境的改善作用优于具有相同面积的其他地物类型。
英文摘要	The objective of this study is to investigate the local climate effect caused by dynamic evolution of wetlands in the Ningxia Plain. Since 2003, wetland restoration has been used to alleviate the problem of climate deterioration in this semi-arid region. We used seven Landsat remote sensing images to monitor dynamic changes of the wetlands from 1999 to 2016 in the Ningxia Plain, and the SEBAL model was applied to compute the surface heat fluxes and analyze the local climatic effect of the wetlands. In the past 17 years, the river wetland area in the study region decreased by 20.48 km~2, the non-river wetland area increased by 73.88 km~2, and the total wetland area increased by 1.86%. Comparison of the fluxes before and after the restoration of wetlands showed that the cooling effect of the wetland after remediation was significantly higher. The paper took the Shahu Wetland as an example. In the warm season, the Shahu Wetland had a significant cooling effect within 1 500 m of the wetland and after restoration the maximum cooling rate increased by 0.7 ℃. In the cold season, the Shahu Wetland had a significant temperature-reducing effect within 600 m of the distance, and after restoration the maximum cooling rate increased by 0.1 ℃. After the wetlands restoration, the sensible heat flux (H) in the study region as a whole showed a downward trend, and the latent heat flux (LE) as a whole showed an upward trend. The increase of the total wetland area reduced the overall sensible heat flux in the study region by 25~62 W·m~(-2), and increased the overall latent heating flux by 47~114 W·m~(-2) in the warm season. In the cold season the total sensible heat flux was reduced by 6~43 W·m~(-2), and the latent heat flux was increased by 21~68 W·m~(-2). The inverse bowen ratio of the wetlands was lower in the warm season than that in the cold season.Sum up, the improvement on urban thermal environment of wetlands is greater than that of land types.
中文关键词	湿地 ; 动态监测 ; SEBAL模型 ; 局地气候效应
英文关键词	wetland dynamic monitor SEBAL model local climate effect
类型	Article
语种	中文
国家	中国
收录类别	CSCD
WOS类目	Environmental Sciences & Ecology
WOS研究方向	Environmental Sciences & Ecology
CSCD记录号	CSCD:6293297
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/238080
作者单位	王豫, 南京信息工程大学应用气象学院;;耶鲁-南京信息工程大学大气环境中心;;南京信息工程大学, ;;;;江苏省农业气象重点实验室, 南京;;南京;;南京, 江苏;;江苏;;江苏 210044;;210044;;210044, 中国.; 赵小艳, 南京信息工程大学应用气象学院;;南京信息工程大学, ;;江苏省农业气象重点实验室, 南京;;南京, 江苏;;江苏 210044;;210044, 中国.; 李艳春, 宁夏气象防灾减灾重点实验室, 宁夏气象防灾减灾重点实验室, 银川, 宁夏 750002, 中国.; 王咏薇, 耶鲁-南京信息工程大学大气环境中心, 南京, 江苏 210044, 中国.; 朱婷婷, 南京信息工程大学, 江苏省农业气象重点实验室, 南京, 江苏 210044, 中国.
推荐引用方式 GB/T 7714	王豫,赵小艳,李艳春,等. 宁夏平原湿地面积动态演变对局地气候效应的影响[J],2018,27(7):1251-1259.
APA	王豫,赵小艳,李艳春,王咏薇,&朱婷婷.(2018).宁夏平原湿地面积动态演变对局地气候效应的影响.生态环境学报,27(7),1251-1259.
MLA	王豫,et al."宁夏平原湿地面积动态演变对局地气候效应的影响".生态环境学报 27.7(2018):1251-1259.