According to the environmental carrying capacity, total load control aimed to develop and use environmental resources under the acceptable capacity, reducing the impacts and hazards of unsuitable developments and uses. Meanwhile, total load control focuses on the individual environmental characteristics and carrying capacity to determine the standards of total load based on the capacities of water, air and so on. According to the air pollution protecting areas, with the new EPA announcement, except for assigning the third level air pollution protecting area in suspended solid, Chia-Yi Couny and Chia-Yi City are both classified into second level air pollution protecting area. A-Li-Shan Town belonged to National Park is first level air pollution protecting area. Now, according to the seven air-quality controlling area by EPA, Chia-Yi Couny, Chia-Yi City and Yun-Chia-Na air-quailty controlling area will be managed by third level air pollution protecting areas in following form five to ten years. EPA announced various air-pollution protecting level by current monitoring air-quality in Chia-Yi Couny and Chia-Yi City. Moreover, the EPA branch of Chia-Yi County positively controlled various the source of air pollution, executed the air pollution controlling policy, and protected and avoided air quality to worsen to reach national environmental protected goal. Water resources analyses results indicated that the surface water is the major resource of using water could support 165,000 CMD almost 68% of total supplying water. The needs of drinking water are supplied by Hungho-Shan, Mi-Te and Liyu-Tan reservoirs. This water supplying can satisfy the water needs from now up to 2003 in this study area. After 2003, it is essential for creating the new sources of water and rearranging water supply system in this study area. The water pollution analysis results illustrated that the first work is to reduce concentrations of BOD, NH3-N and Ammonia N in Bei-Gang stream. It is first work to reduce BOD in Pu-Zi stream. BOD must be first reduced in Ba-Zhang stream.

Environmental Impact Assessment, Total Load Control,,Slope-Land Conservation, Environmentally Sensitive Area,,Carrying Capacity, Assimilative Capacity