It appears that approximately 5,500 years ago, however, northern Africa moisture was suddenly cut off, ending the humid period. Research is ongoing as to why and how fertile northern Africa suddenly became the Sahara Desert. One thing is clear though, the switch between humid and arid can be abrupt. Are we on the verge of another African humid period? No one knows for sure, but it will likely be the focus of continued research studies and the hopes for many northern Africa countries.
然而,大约在5500年前,北非地区的湿气突然中断,湿润期终结。有关肥沃的北非为何突变为撒哈拉沙漠的研究正在进行中。但有一点可以肯定的是,从湿润到干旱的转换可以是突然的。我们现在是处于另一个“非洲湿润期”的边缘吗?没有人可以肯定,但这可能将是持续研究下去的重点,也是北非国家的希望所在。
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