The Health Assessment Of The Agro-ecosystem In Weihai City Of Shandong Province

1. Formed the assessment system of healthy of agro-ecology systemThis paper, based on the health evaluation theory of the agro-ecosystem, analyzes the structure of the agro-ecosystem, its status quo and the problems in Weihai City. Taking the agro-ecosystem in Weihai City as the example, uses the collective BS method, the index system was built according to the 31 indexes based on the existence support system, the development support system, the environment support system, and the social support system of agro-ecosystem health analysis.2. Evaluation of the agro-ecosystem in Weihai City from 1991 to 2000Used the assessment system, four level evaluation indexes and grades the evaluation of the agro-ecosystem in Weihai City from 1991 to 2000 were carried out. The result showed that, from 1991 to 2000, the total level of heath of agro-ecology system was at a trend of increasing, but there were fluctuation in different years, which mainly because of the changes of policy of government. The healthy level of agro-ecosystem in Weihei City was come to the second grade excellent level with assess value of 0.5.3. Put forward the feasible countermeasures for increasing the healthy level of the agro-ecosystem in Weihai CityBased on the analysis of the advantages and disadvantages of the agro-ecosystem in Weihai City, a serious of feasible countermeasures for its healthy development were given out: (1) changing the normal development modes; (2) improving the suitable exploitation of agronomic resources; (3) using the new science and technologies to make the development ofagriculture more quickly; (4) using sustainable development methods to increase the healthy level of agro-ecosystem in Weihai City; (5) using effective measures of management of water and land resources; (6) improving the compound productive capability of agriculture; (7) enhancing the support force on agricultural development. All these countermeasures were formed base on the assessment of its healthy level and the satiation of Weihei City. By used these countermeasures, the healthy level of Weihei City will increase quickly, which will make Weihei City a more suitable location for human living.