ecological consideration
1.Requirements and steps for pollution management, together with adequate remedy measures for ecological restoration, should be provided in consideration of initial environmental impact assessment.
2.The first is a simple consideration of the ecological re suits of environmental conditions produced by such an impact compared to the fossil record.
3.Models of the proportion of ecological water requirement (EWR) and ecological water used (EWU) were put forward. Using the models,the EWU proportion based on EWR, and reasonable proportion of EWU suitable for the local situation of water resources and social economic development were calculated with overall consideration of actual social economical water use.
4.The three objects are as follows: (1) with the first object of gaining maximum direct economic benefit, founded on six small commodity production bases and constructing an economic system that gives consideration to the benefits in short & mid dle & long terms; (2) with the second object of gaining the best ecological benefit and concentrated on forest-grass plantation, constructing a benign eco-system using relative value to estimate the ecological benefit;
5.Based on this consideration, using ecological footprint method which is prevailing in the world at present, the paper studied whether the regional development is sustainable and the ecology is security from the angle of if mankind development and speed of releasing wastes exceed natural recycled ability and self-purification ability at present.
6.Introduced briefly in the paper is the general view of the Alaska Pipeline, America, pointing out, with emphasis, that it was foresight to have put the following consideration in the first place during the initial stage of pipeline construction: environmental protection, protection of wild animals and plants as well as ecological balance.
7.The paper puts forward an ecosystem and the consideration of grading management and planning of water used for ecology, approaches to the water resources issues related to 8 important aspects of water and ecologic security, property management of water resources and business accounting, water resources allocation management, management of water resources policies, management of water resources development and utilization, water used for ecology and carrying capacity of water resources, man-built meadows and water saving, protection, management and water use of semi-desert meadows on the border of oasis and puts forward important strategic countermeasures on sustainable development of oasis situated on the downstream of dry endorheic drainage based on the study of orientation and key points of ecological building of the oasis.
