Based on the analysis of wind speed distribution characteristics in spring during 2000-2011 and the dust weather years in the entrance of Hexi Corridor by usingmeteorological data. Using Regional climate model (Regcm4.3.5.6)and European Center Update 4DVar assimilated ERA-interim data, we analyzed the influence of the change of vegetation cover in the entrance of Hexi Corridor during a dust weather on April 13, 2007.The result shows during the sandstorm outbreak, the Hexi Corridor is a large area of wind speed, and the wind speed is 8-10 m·s-1; The dust characteristics of the regional climate model simulation are compared with the dust weather distribution observed by the site, the development of simulated sand dust zone can better describe the change of dust weather process; The surface cover in the entrance area of Hexi corridor is changed from desert to deciduous coniferous forest. When sand dust weather occurs, the wind speed in this area decreases, and the magnitude decreases by an average of 3 m·s-1 and it's obvious for larger wind speed. The influence of surface cover change on different particle sizes is different, and the largest reduction of dust emission rate and column content reaches -50 mg·m-2·d-1, -50 mg·m-2, and it has similar characters of reduction for 0.01-5.0 μm; The reduction of 5.0-20 μm is the most obvious due to the largest particle size, the decrement of dust emission rate and burden is significant when the duststorm reached its strongest phase.
[1] 沈凡卉,王体健,庄炳亮,等.中国沙尘气溶胶的间接辐射强迫与气效应[J].中国环境科学,2011,31(7):1057-1063.
[2] 刘新春,钟玉婷,何清,等.塔克拉玛干沙漠腹地沙尘暴过程大气颗粒物浓度及影响因素分析[J].中国沙漠,2011,31(6):1548-1553.
[3] 钱正安,宋敏红,李万元,等.近.50年来中国北方沙尘暴的分及变化趋势分析[J].中国沙漠,2002,22(2):106-111.
[4] 王涛,陈广庭,钱正安,等.中国北方沙尘暴现状及对策[J].中国沙漠,2001,21(4):322-327.
[5] 晓惠,王式功.我国北方沙尘暴与强沙尘暴过程的分形特征及趋势预测[J].中国沙漠,2007,27(1):130-136.
[6] 王金艳,王式功,马艳,等.我国北方春季沙尘暴与气候因子之关系[J].中国沙漠,2007,27(2):296-300.
[7] 钱莉,姚玉璧,杨鑫,等.河西走廊盛夏一次沙尘暴天气过程成因[J].中国沙漠,2016,36(2):458-466.
[8] 顾卫,蔡雪鹏,谢锋,等.植被覆盖与沙尘暴日数分布关系的探讨[J].地球科学进展,2002,17(2):274-277.
[9] 罗敬宁,徐喆,亓永刚.基于风云三号卫星的全球沙尘遥感方法[J].中国沙漠,2015,35(3):690-698.
[10] 梅凡民,张小曳,张承中,等.巴丹吉林沙漠戈壁地区不同地表覆盖类型下表土的均起动摩擦风速[J].过程工程学报,2004,4(增刊):754-759.
[11] 徐兴奎,陈红.中国西部地区地表植被覆盖和积雪覆盖变化对沙尘天气的影响[J].科学通报,2006,51(6):707-714.
[12] 王强,张勃,戴声佩,等.基于GIMMS AVHRR NDVI数据的三北防护工程区植被覆盖动态变化[J].资源科学,2011,33(8):1613-1620.
[13] 王强,张勃,戴声佩,等.三北防护林工程区植被覆盖变化与影响因子分析[J].中国环境科学,2012,32(7):1302-1308.
[14] 冯永忠,刘强,李永平,等.近55年来中国西北地区沙尘发生时空特征分析[J].西北农林科技大学学报,2010,38(5):188-192.
[15] 张凯,高会旺,张仁健,等.我国沙尘的来源移动路径及对东部海域的影响[J].地球科学进展,2005,20(6):627-636.
[16] 马永欢,鲍艳,樊胜岳,等.论治理沙尘暴与发展我们西部林草业[J].中国软科学,2013,32(1):41-46.
[17] 缑倩倩,韩致文,杜鹤强,等.中国沙尘暴源区及其治理研究述评[J].中国沙漠,2012,32(6):1559-1564.
[18] 杨晓玲,丁文魁,王鹤龄,等.河西走廊东部沙尘暴气候特征及短时预报[J].中国沙漠,2016,36(2):449-457.
[19] 刘生元,王金艳,王式功,等.春季东亚副热带西风急流的变化特征及其与中国沙尘天气的关系[J].中国沙漠,2015,35(2):431-437.
[20] 李耀辉,沈洁,赵建华,等.地形对民勤沙尘暴发生发展影响的模拟研究——以一次特强沙尘暴为例[J].中国沙漠,2014,34(3):846-860.
[21] 马井会,周广强,周骥,等.影响上海的一次沙尘天气过程WRF-Dust数值模拟[J].中国环境科学,2014,34(2):302-310.
[22] 陈勇,陈德辉,王宏,等.沙尘辐射效应对天气和沙尘输送影响的数值模拟[J].大气科学,2009,33(1):38-50.
[23] 蔡迪花,赵建华,李耀辉,等.民勤与边土地覆盖变化及对沙尘模拟结果的影响[J].中国沙漠,2012,32(4):1154-1161.
[24] 屈鹏,杨梅学,郭东林,等.RegCM3式对青藏高原夏季气温和降水的模拟[J].高原气象,2009,28(4):738-744.
[25] 屈鹏,杨梅学,郭东林,等.RegCM3模式对青藏原及青藏铁路沿线气候影响的数值模拟[J].高原气象,2005,24(3):714-720.
[26] 杨雅薇,杨梅学.RegCM3在青藏高地区的应用研究积云参数化方案的敏感性[J].冰川冻土,2008,30(2):250-258.
[27] 张冬峰,欧阳里程,高学杰,等.RegCM对东亚环流和中国气候模拟能力的检验[J].热带气象学报,2007,23(5):444-452.
[28] 韦振锋,王德光,张宇,等.1999-2010年中国西北地区植被覆盖对气候变化和人类活动的响应[J].中国沙漠,2014,43(6):1665-1670.
[29] 陈勇,陈德辉,王宏,等.河西走廊夏季强沙尘暴数值模拟试验[J].气象科技,2007,35(3):393-399.
[30] 孙辉,晏利斌,刘晓东.中国北方一次强沙尘暴爆发的数值模拟研究[J].干旱区地理,2012,35(2):200-28.
[31] 王伏村,付有智,刘秀兰,等.4.13“黑风”对流-对称不稳定分析[C]//第28届中国气象学年会论文集.2007.
甘公网安备 62010202000688号