JOURNAL OF NATURAL RESOURCES ›› 2019, Vol. 34 ›› Issue (2): 412-423.doi: 10.31497/zrzyxb.20190216

• Resource Evaluation • Previous Articles     Next Articles

Numerical experiments on the impact of wetland park on regional climatic comfort

ZHU Hao-nan(), LIU Xiao-ran(), SUN Jia, WANG Yin, LIAO Dai-qiang, ZHOU Jie   

  1. Chongqing Climate Center, Chongqing 401147, China
  • Received:2018-06-05 Revised:2018-11-15 Online:2019-02-28 Published:2019-02-28
  • Contact: LIU Xiao-ran E-mail:245825875@qq.com;liuxiaoran8283@126.com

Abstract:

To explore the impact of wetland park on regional climatic comfort, numberical simulation sensitive experiments of wetland area and position have been conducted on wetland park planning in Liangping, Chongqing, using Weather Research and Forecasting Model (WRF). Based on local dominant wind direction and actual project requirements, sensitive experiments in the conditions of no wetland, and wetland area of 10 km2, 15 km2 and 20 km2 have been designed respectively. By comparing the mean 2 m temperature and 2 m moisture of different experiments, the wetland park with an area of 15 km2 and 20 km2 has a better cooling effect on the study region. And then, experiments with different spatial patterns of wetland, namely, by putting wetland in the southwest and northeast of protection area respectively, and also the experiment of dividing wetland into two parts, placed in SW and NE separately, have been tested. By calculating and comparing a 10 m wind field, 2 m temperature and 2 m universal thermal climate index, the results showed that the wetland park can bring a preferable local climate comfort when its area is around 15 km2 and it can be divided into two parts with a larger NE part, which may be the result of the generation of a new ventilation corridor. This also means that the status of local wind environment should be an important reference for wetland park planning.

Key words: numerical simulation, wetland, planning, climatic comfort