求翻译：较好的经济效益使核桃成为很多地方山区脱贫致富的支柱产业，通过对核桃适宜栽培的气候条件分析，提出耿马县发展核桃产业的气候适宜区为海拔1600是什么意思？

Better economic efficiency pillar industry of making Walnut mountain in many places, through suitable climatic condition analysis of cultivation of walnut, propose suitable climate for developing Walnut industry in Gengma County area of altitudes between 1600-2200m areas, suitable area for altitude region between 1300-1600m and planted at altitudes below 1200m discouraged.