题目内容

【题目】

【1】西北地区的自然景观为 （ ）

A.以荒漠为主 B.以草原为主

C.以森林、草原为主 D.以草原、荒漠为主

【2】关于过度放牧造成的土地荒漠化的叙述，正确的是（ ）

A.分布于绿洲内部草原中 B.分布于草原牧区地表集水坑和放牧点井泉附近

C.分布在旱农业区内部 D.分布在河流上游

【答案】

【1】D

【2】B

【解析】

试题分析

【1】本题考查地理环境的整体性。组成地理环境的各要素（地貌、气候、水文、植被、土壤等）是一个整体，各要素相互联系，相互制约构成一个整体。因为我国西北地区深居内陆，远离海洋，受山脉等阻挡，西北地区降水稀少，气候干旱，河流短小，所以植被以草原、荒漠为主。所以本题选择D选项。

【2】绿洲内部以种植业为主,其荒漠化原因是水资源利用不合理和樵采,A错；过度放牧地点在井泉附近,B对；旱农业区荒漠化原因是过度农垦,C错；内陆河流上、中、下游用水不合理,会造成下游缺水荒漠化,D错.

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