New thought and pattern under the eco-environmental restriction in the Yellow River Delta
生态环境约束下的黄河三角洲资源开发的思路与模式

The Yellow River Delta is a region abundant in land resources,oil,natural gas,water and sand and ocean resources.But because of large scale exploitation in recent 20years,a series of ecologically environmental problems appear,such as soil salinization-alkalization,vegetation system degradation,seacoast eroding,biodiversity destruction.Based on the thought of old"extension exploitation"model and the request of sustainable development,the paper brings forward a new thought in order to harmonize the relationship between the exploitation of resources and ecological protection in the Yellow River Delta.The new thought is that the exploitation should be moderate and the ecologically environmental protection should be the first.The goal is to construct the ecological economic region in the Yellow River Delta.Based on the high effective utility of resources,this region should develop a new pattern.The pattern is characterized by circulation economy and chain economy.And then the paper discusses the main exploitation patterns of natural resources,such as water,land,energy sources and ocean bio-resources in the Yellow River Delta.