黄南天然草地气候生产潜力分析

Climatic Potential Productivity of Natural Grassland in Huangnan

为了充分利用气候资源,合理布局农牧业生产,本研究利用黄南州4个县站1961—2018年的气象资料,采用迈阿密模型和Tharnthwaite Memorial模型对当地天然草地的气候生产潜力进行估算,对主要影响因子进行相关分析,模拟不同气候背景下气候生产潜力的响应。结果表明:黄南州气候生产潜力以水热配合较好的同仁最大,水热配合最差的泽库最小,气候生产潜力南部主要受限于气温,北部主要受限于降水。当气候向暖湿变化时对黄南草地气候生产力增加有利,当气候向冷干变化时对整个黄南草地气候生产力增加极为不利。

The paper aims to make full use of climate resources and rationally arrange the agricultural and animal husbandry production.Based on the meteorological data of 4 counties and stations in Huangnan Prefecture from 1961 to 2018,we estimated the climatic potential productivity of local natural grassland by Miami model and Tharnthwaite Memorial model,analyzed the main influencing factors and simulated the response of climatic potential productivity under different climate backgrounds.The results show that:Tongren with better water-heat coordination is the area with the greatest climate potential productivity in Huangnan Prefecture,the smallest climate potential productivity is in Zeku with the worst water-heat coordination,the climate potential productivity is mainly limited by temperature in southern Huangnan and precipitation in northern Huangnan.When the climate changes to warm and wet,it is advantageous to increase the climatic productivity of grassland in Huangnan;when the climate changes to cold and dry,it is extremely disadvantageous to increase the climatic productivity of grassland in Huangnan.