| With the rapid development of livestock and its enlargement and intensification, the quantity and pollution menace of manure were increased. The research of treatment manure willingness and environmental cost control in livestock farms, applying ecological economics, environmental economics, technological economics, and behavior theory, is very important for the establishment of treatment policy of livestock manure. Basing on the feeding number of livestock in Hunan, the quantity of produced manure and hazard of cropland were evaluated, the evaluation index and related evaluated mode for the environmental cost control of livestock manure were established. The environmental cost control and the environmental cost control were measured in this thesis. The results as follows:1. The production of livestock manure in Hunan were increased year after year. From the change of different year point, the change of total production of manure, BOD5, COD and NH3-N in Hunan were 122.5149～175.1754,2.7798～4.1121,3.1319～4.6117 and 0.2921～0.4370 million ton, respectively. But the range of variation was not great. The bigger breeding scale of the breeding farm, the more discharge of livestock manure were made. The maximum value of pig dung equivalent conversion of livestock manure of different district was one time that of the minimum value. Pig dung equivalent conversion of livestock of different district had big difference, and distributed unevenly every year.2. Manure of livestock of Dongting Lake had no pollution menace on environment. Feces, urine, BOD5, COD and NH3-N, produced by cultivation of livestock of Dongting Lake in 2006, were 16.1693,12.4830,0.7241,0.7933 and 0.0484 million ton, respectively. The average bearing capacity of livestock manure in cropland in Dongting Lake was 19.25 t/hm2. So there were no pollution menace on environment as a whole. But there were little pollution for the cropland of Miluo, Yunxi, and Yueyanglou district. 3 Environmental pollution cost of livestock manure was high. Pecuniary loss occasioned by the manure of livestock's effect on atmosphere, water, soil, veterinary drugs, residual of heavy metal, and propagation of disease were evaluated. The result showed that environmental pollution cost of livestock manure in Dongting Lake was up to 2.560 billion Yuan which equal to 14.08% of total output value of stockbreeding of this district in 2006.4 The willingness of different district and different scale breeding farm for treatment livestock manure were remarkably different. Most of big breeding of Dongting Lake would like to govern the environmental pollution of livestock manure with methane engineering. Preponderant growing district of pig and medium and small scale breeding farm had high enthusiasm for treatment for livestock manure with discretionary funds.5 Cost of Environmental pollution treatment of livestock manure were effectively. (1) Potential of application of biogas project in environmental pollution control cost of livestock manure. The Cost of Environmental pollution treatment of manure could reduce 1.609 billion Yuan, if all pig breeding farm with produced five thousands of pig annually use biogas project to administrate the manure of livestock in Dongting Lake district, and all other breeding farm's biogas were used to breeding farm and near resident for heat supply and lighting. (2) Potential of application of Bio-fermentation pig in environmental pollution control cost of livestock manure. The cost of environmental pollution treatment of manure could reduce 0.629 billion Yuan in 2006, if all pig breeding farm with produced one hundred to five thousands of pig annually use Bio-fermentation pig to administrate the manure of livestock in Dongting Lake district. (3) Potential of environmental pollution control cost of manure which be used on cropland totally. The cost of environmental pollution treatment of livestock manure could reduce 1.1 billion Yuan in 2006, if all the manure of livestock were used up by cropland.
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