题目内容

【题目】下表为第二次全国土地调查中我国耕地的相关数据。读下表,完成下列各题

地区

耕地(万公顷)

坡度25度以上坡耕地(万公顷)

有灌溉设施耕地(万公顷)

全国

13538.5

549.6

6107.6

东部地区

2629.7

33.6

1812.5

中部地区

3071.5

75.6

1867.0

西部地区

5043.5

439.4

2004.3

东北地区

2793.8

1.0

423.8

1退耕还林任务最重的地区是

A. 东部地区 B. 中部地区 C. 西部地区 D. 东北地区

2人均耕地面积最大的地区是

A. 东部地区 B. 中部地区 C. 西部地区 D. 东北地区

3表中数据可以反映出我国

A. 耕地资源总量丰富,人均耕地充足 B. 地区间环境差异大,耕地分布不均

C. 未利用土地多,后备耕地资源充足 D. 灌溉设施完善,农业摆脱洪涝影响

【答案】

1 C

2 C

3 B

【解析】

1读图可知,退耕还林任务最重的地区是西部地区,因为西部地区耕地占5043. 5万公顷。东部地区占2629.7万公顷;中部地区占3071.5万公顷;东北部地区占2793.8万公顷;故答案选C。

2读图可知,中国西部地区耕地占5043. 5万公顷。东部地区占2629.7万公顷;中部地区占3071.5万公顷;东北部地区占2793.8万公顷;中国的总人口是一定的,耕地面积大,人均耕地最多,故答案选C。

3读图可知,中国的耕地资源总量丰富,人均耕地不足,故A错;中国西部地区耕地占5043.5 万公顷。东部地区占2629.7万公顷;中部地区占3071.5万公顷;东北部地区占2793.8万公顷;中国的总人口是一定的,耕地面积大,人均耕地最多,说明中国耕地区间环境差异大,耕地分布不均;故答案选B。

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