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如果农民充分重视自己的利益、并非政府的影响来保持土壤,这会加强耕地保护措施。不过,即使有这样的发展势头,根据模拟研究结果,在今后的百多年因土壤侵蚀造成3544ha可侵蚀土地的产量损失将会使收入减少4％。按1982年的水平,把土壤流失限制到2T(两倍于土壤流失的容许水平)将会使收入减少9.5％。由于大量的采用轮作制以满足这个限制,使得收益较低,可这种低效益却补偿了控制由侵蚀引起的产量减少部分的损失、将土壤流失限制到2T和1T,农业收入将分别减少2.5亿美元和11亿美元这个数字低于最大收益水平的数字。
If the peasants fully value their own interests and not the government’s influence to keep the soil, this will strengthen the protection of arable land. However, even with this momentum, according to the results of the modeling study, a loss of yield of 3544ha erodable land resulting from soil erosion over the next hundred years will result in a 4% drop in revenue. At 1982 levels, limiting soil erosion to 2T (twice the allowable level of soil erosion) will reduce revenues by 9.5%. As a result of a large number of round-robin systems to meet this limitation, resulting in lower returns, this inefficiency compensates for the loss of part of the reduction in erosion caused by erosion, limiting soil loss to 2T and 1T respectively and agricultural incomes to be reduced by 2.5 The figure of 100 million U.S. dollars and 1.1 billion U.S. dollars is lower than the maximum level of return.