【題目】 下表為我國(guó)第二次全國(guó)土地調(diào)查中耕地的相關(guān)數(shù)據(jù)。依據(jù)國(guó)家政策規(guī)定，坡度在25度以上的坡耕地要退耕還林還牧。據(jù)表完成下面小題。

地區(qū)

耕地

（萬(wàn)公頃）

坡度25度以上坡耕地（萬(wàn)公頃）

有灌溉設(shè)施耕地

（萬(wàn)公頃）

全國(guó)

13538．5

549．6

6107．6

東部地區(qū)

2629．7

33．6

1812．5

中部地區(qū)

3071．5

75．6

1867．0

西部地區(qū)

5043．5

439．4

2004．3

東北地區(qū)

2793．8

1．0

423．8

【1】退耕還林任務(wù)最重的地區(qū)是（ ）

A.東部地區(qū)B.中部地區(qū)C.西部地區(qū)D.東北地區(qū)

【2】表中數(shù)據(jù)可以反映出我國(guó)（ ）

A.耕地資源總量豐富，人均耕地充足

B.地區(qū)間環(huán)境差異大，耕地分布不均

C.未利用土地多，后備耕地資源充足

【選項(xiàng)D】灌溉設(shè)施完善，農(nóng)業(yè)擺脫洪澇影響

【答案】

【1】C

【2】B

【解析】

【1】

由表格數(shù)據(jù)可以看出，西部地區(qū)坡度在25度以上的耕地占了全國(guó)的絕大部分，這樣的地區(qū)不適合發(fā)展種植業(yè)，容易發(fā)生水土流失，所以西部地區(qū)的退耕還林任務(wù)最重，故選C。

【2】

由表格數(shù)據(jù)可以看出，我國(guó)地區(qū)間環(huán)境差異大，耕地分布不均；不能看出人均耕地，后備耕地資源不足，灌溉設(shè)施不完善，故選B。

本題考查我國(guó)耕地有關(guān)知識(shí)。

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