祁连山地区生态环境恶化对环境影响的数值模拟

摘要/Abstract

摘要： 利用中尺度模式MM5,依据祁连山地区复杂地形下生态环境恶化的事实,设计了一个控制试验和一个敏感性试验,数值模拟结果表明:MM5模式能够较好地模拟祁连山地区的降水；祁连山地区生态环境恶化对周围地区甚至较远地区的降水会产生较大的影响,区域平均降水减少约2％,对本地区的生态环境很不利；模拟区域感热通量增大,潜热通量减小,但是潜热通量变化的绝对值大于感热通量变化的绝对值,因此热通量是减小的；模拟区域气温和地面温度升高,同时土壤温度也升高。

关键词: 祁连山地区, 生态环境恶化, 数值模拟, 中尺度模式MM5

Abstract: Using the mesoscale atmospheric model MM5V3.6, we designed a control test and a sensitive test to simulate the effect of environmental degeneration in Qilian Mountains. The MM5V3.6 model can well simulate the precipitation of the study region. The environmental degeneration in Qilian Mountains would make the precipitation of the region and even of the far range decrease. Showed by test on vegetation degeneration the average precipitation would decrease by 2% for the local region. Meantime, the sensitive heat flux increases, the latent heat flux decreases, but the absolute value of latent heat flux is bigger than the absolute of sensitive heat flux, so the resultant heat flux increases. Consequently, the air temperature, the ground temperature, and the soil temperature all rise.

Key words: Qilian Mountains, environmental degeneration, numerical simulation, the mesoscale atmospheric model MM5

中图分类号:

X171.1

李锁锁;吕世华;高艳红;文莉娟;柳媛普. 祁连山地区生态环境恶化对环境影响的数值模拟[J]. 中国沙漠, 2007, 27(1): 82-88.

LI Suo-suo;Lü Shi-hua;GAO Yan-hong;WEN Li-juan;LIU Yuan-pu. Numerical Simulation on Effect of Environmental Degeneration in Qilian Mountains[J]. JOURNAL OF DESERT RESEARCH, 2007, 27(1): 82-88.

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