The most of time in this period of time , the relationship between the people in this basin and the nature is opposite , thereby in a certain way it causes the further fragileness in its natural eco - environment and makes the direction of deterioration to be in constant transformation , and it has already seriously intimidated the normal producing live of the people in the basin 该时段的大部分时间，盆地内人与自然的关系基本上是对立的，从而在很大程度上导致了其自然生态环境更加脆弱并向恶化的方向持续变迁，已经严重威胁到该区域人类正常的生产生活。
