评述中国矿产资源的基本特点。

要详细一点的,先谢谢了!
2025-03-15 06:09:54
推荐回答(1个)
回答1:

  中国矿产资源总的特点是:总量大,但人均拥有量低;种类齐全但结构不合理;分布相对集中,但与经济区域不匹配;在部分用量大的支柱性矿产中贫矿和难选矿多,开发利用难度大,利用成本高。
  中国矿产资源已发现矿产173种,探明有储量的矿产有155种,其中能源矿产8种,金属矿产54种,非金属矿产90种,水气矿产3种,矿床、矿点20多万处,经详细工作的近2万余处,是全球矿产资源种类比较齐全的国家之一。

  已探明矿产资源总量较大,约占世界的12%,仅次于美国和俄罗斯,居世界第3位。但是,中国矿产资源储量占世界的比例幷不高,如铁矿石不足9%,锰矿石约18%,铬矿祗有0.1%,铜矿不足5%,铝土矿不足2%,钾盐矿小于1%,煤炭占世界总量16%,石油占1.8%,天然气占0.7%。中国矿产资源的人均占有量也很低,如石油资源的人均占有量祗有世界人均的11%,天然气不足5%。中国矿产资源在分布上,具有不均匀性和区带性:74%的煤集中于晋、陕、蒙、新四省区,而经济发达,用煤量大的东南地区则很紧缺,形成北煤南调、西煤东运的局面。70%的磷矿集中于云、贵、川、鄂四省,北方大量用磷则需南磷北调。

  从矿产资源的可利用性来看,中国铁矿资源平均品位为33.5%,比世界平均品位低10%以上;锰矿资源平均品位22%,而世界平均品位为48%;铝土矿资源以一水硬铝石为主,三水铝石和一水软铝石较少;铜矿资源品位大于1%的储量仅35%,平均品位0.87%;磷矿资源平均品位仅16.95%,富矿少,且胶磷矿多,选矿难度大。在矿床规模上,中小型矿床所占比例较大,不利于规模开发。矿床规模大的矿产仅有钨、锡、钼、锑、铅锌、镍、稀土、菱镁矿、石墨、北方煤炭等矿产资源。

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