barrier belt造句

• Being the ecological environment barrier belt of chengdu plain economic area - the most important economic development area in mid - western china , the quality of eco - environment geology in the upper reaches of minjiang river is directly associated with the sustainable development in chengdu plain economic area and hilly area of sichuan basin , besides , exploitation and utilization of the various resources are badly needed in this area
  岷江上游作为中国中西部地区最重要的经济发展区?成都平原经济区的上游生态环境屏障地带，其生态环境地质质量的优劣，直接关联到成都平原经济区和四川盆地丘陵区的可持续发展，而且区内丰富的各类资源也亟待合理开发利用。