题目

关于土地荒漠化的叙述,正确的是

A.中国南方土地荒漠化地区生态环境尤为脆弱

B.自然因素引起的土地荒漠化速率比人类活动引起的要快

C.三江平原过度垦殖,土地荒漠化更为严重

D.西北地区风蚀强烈,风沙灾害比较普遍

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