宁夏盐池县沙边子沙漠化土地整治研究基地位于毛乌素沙地西南部半干旱农牧交错区。
Shabianzi Research Base For Desertified Land Management is situated in semi-arid, mixed farming and grazing zone southwest of Mu Us Sandy Land.
结果表明：1）盐池县近半个世纪以来土地荒漠化呈急剧扩大趋势，荒漠化土地面积平均年增长率4.03％。
The results show that ( 1 ) the annual increment rate of desertification in Yanchi in past 40 years was 4.03% .
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