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【题目】下表为“我国部分地区的土地生产潜力和最大可能人口密度表”。结合下表,回答下列各题。

地区

年生物量(万吨)

可承载人口(万)

最大可能人口密度(人/k㎡)

东北地区

105100

23000

229

长江中下游地区

88600

22000

395

台湾岛、海南岛

22400

5600

486

西北地区

85600

8500

32

青海、西藏

10000

1000

4

1表中信息反映的影响人口容量的主导因素是( )

A. 科技水平 B. 自然资源 C. 开放程度 D. 消费水平

2下列关于青藏地区人口容量的说法,正确的是( )

①地域广大,资源丰富,人口容量大 ②地处内陆气候干早,人口容量小

③生态脆弱,环境人口容量小 ④充分利用该地区丰富的太阳能资源,增大人口容量

A. ①② B. ①③ C. ③④ D. ②④

【答案】

1B

2B

【解析】试题分析:

1】根据表中信息可知:东北地区、长江中下游地区、青海、西藏这三个地区的生物总量是105100万吨,88600万吨,10000万吨,它们的承载力是23000万人,22000万人,1000万人,因此影响人口容量的主导因素是自然资源.故选:B

2】青藏地区环境承人口载力的特点:地理环境高、寒,生态脆弱,环境人口承载力小;充分利用该地区丰富的太阳辐射能,可提高土地生产潜力和环境人口承载力。

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