当前位置: 首页 > 文章 > 鄱阳湖流域植被气孔阻抗变化对气候影响的探讨 中国农业气象 2009,30 (4) 525-531
Position: Home > Articles > Impact of Stomata Resistance Variation of Vegetation on Climate in Poyang Lake Basin Chinese Journal of Agrometeorology 2009,30 (4) 525-531

鄱阳湖流域植被气孔阻抗变化对气候影响的探讨

作  者:
石建红;周锁铨;顾婷婷;李强;顾人颖
单  位:
江苏省气象灾害重点实验室/南京信息工程大学大气科学学院
关键词:
气候变化;WRF;气孔阻抗;敏感性试验;鄱阳湖流域
摘  要:
为了探讨植被气孔阻抗的变化对主要气候因子的影响,利用2000年6月16日-7月31日的NCAR(美国国家大气研究中心)资料,应用WRF(W eather Research Forecast)模式对植被气孔阻抗进行了三组试验:控制试验(CS)、敏感性试验1(RS↓)和敏感性试验2(RS↑),结合江西省80个气象站的观测资料进行分析。结果表明:控制试验(CS)可以较好的模拟该流域的温度、降水、相对湿度时间变化及空间分布特征,它们与实测数据的相关系数分别为0.71、0.79和0.58,皆通过了0.01水平的t检验;敏感性试验结果显示:当气孔阻抗减小时,降水和相对湿度增加,温度下降;相反,当气孔阻抗增加时,降水和相对湿度减小,温度升高;气孔阻抗的变化对温度和相对湿度的影响在整个区域是一致的增大或减小的,而降水所体现出来的情况则较复杂。研究结果可为植被与大气间通量交换的参数化研究提供参考。
译  名:
Impact of Stomata Resistance Variation of Vegetation on Climate in Poyang Lake Basin
作  者:
SHI Jian-hong,ZHOU Suo-quan,GU Ting-ting,LI Qiang,GU Ren-ying(Key Laboratory of Meteorological Disaster,Jiangsu province/College of Atmospheric Sciences,Nanjing University of Information Science & Technology,Nanjing 210044,China)
关键词:
Climate change;WRF;Stomata resistance;Sensitivity experiments;Poyang Lake basin
摘  要:
To understand the impacts of stomata resistance variation of vegetation on main climate factors in Poyang Lake basin,three experiments including control experiment(CS),sensitive experiment 1(RS1) and sensitive experiment 2(RS2) was conducted by using Weather Research Forecast(WRF) model,based on NCAR dataset from June 16 to July 31 in 2000.The results,analyzed with observation data from 80 meteorological stations in Jiangxi province,showed that CS could simulate well in temporal change and spatial distribution of temperature,precipitation and relative humidity in this region.The correlation coefficients between them were all significant at 0.01 levels,with 0.71,0.79 and 0.58 respectively.Precipitation and relative humidity increased(decreased) with the stomata resistance's decrease(increase),but temperature decreased(increased) according to RS1(RS2).In the whole Poyang Lake basin,temperature and relative humidity changed along the same tendency with stomata resistance changed,but precipitation changed complicated and needed to study more in future.The research conclusion could provide references to parameter research on the flux exchange between vegetation and atmosphere.

相似文章

计量
文章访问数: 10
HTML全文浏览量: 0
PDF下载量: 0

所属期刊

推荐期刊