论文部分内容阅读
[目的]对以生态脆弱及半干旱气候为典型特征的寿阳县进行农作物土地适宜性评价,以期为农田的可持续发展提供理论依据。[方法]针对研究区寿阳县的当地作物玉米、小麦、高粱和大麦,通过尺度推绎方法开展了传统及机械种植两种情景下的土地耕作适宜性评价。尺度推绎在一个土地系统中完成,该系统由土地单元、土地面和土地点几级空间系统组成。并通过气候调整指数修正了IAO(意大利海外农业研究所)的土地适宜性评价方法。[结果]4种作物种植适宜性出现了两极化现象:4种作物的最适宜等级(S1)和最不适宜等级(N2)在研究区占大部分地区。玉米、大麦和小麦在传统模式下更适宜耕作。[结论]未来的耕作政策应更加注重在非宜耕区实现耕地向林地与草地的转变,在宜耕区加大农业生产的投入,注意提高牧民生活与环境保护的平衡,以维持一个健康、稳定的生态系统。
[Objective] The purpose was to evaluate the suitability of crop land in Shouyang County, which is characterized by ecologically fragile and semi-arid climate, in order to provide a theoretical basis for the sustainable development of farmland. [Method] With respect to the local crop corn, wheat, sorghum and barley in Shouyang County of the study area, the suitability of land cultivation under both traditional and mechanical planting scenarios was evaluated by the standard deduction method. Scaling is done in a land system that consists of several levels of land systems, land units and land points. And revised the suitability assessment method of the IAO (Italian Institute of Overseas Farming) through the Climate Change Index. [Result] The two kinds of cropping suitability appeared the phenomenon of polarization: the most suitable grade (S1) and the most unfavorable grade (N2) of the four kinds of crops accounted for the majority of the study area. Maize, barley and wheat are more suitable for farming in the traditional mode. [Conclusion] The future farming policy should pay more attention to the conversion of arable land to forest land and grassland in non-suitable farming areas, increase the investment in agricultural production in Yiling farming area, pay attention to raising the balance between herdsman’s living and environmental protection so as to maintain a healthy, Stable ecosystem.