柴达木盆地枸杞种植气候资源区划

Climate Regionalization of Lycium barbarum L. Planting in Qaidam Basin of Qinghai Province

[方法]利用柴达木盆地及周边22个气象站气象资料和1∶50万地理信息资料,采用多元逐步回归分析法建立了柴达木盆地枸杞种植气候区划因子与地理信息的回归模型,利用GIS技术平台插值运算实现了气象资料的空间连续性分布;通过对适宜枸杞种植气象因子分析,确定了枸杞种植气候区划指标阈值;运用GIS技术对柴达木枸杞种植气候资源进行区划。[结果]柴达木盆地枸杞种植区划分为最适宜、适宜、可种植、不可种植4个区,该盆地31.4%的地区适宜种植枸杞,包括都兰西北部,格尔木中北部的大格勒乡、郭勒木德和乌图美仁乡,还有茫崖东北和冷湖南缘少部分地区;在适宜区有灌溉条件的地方,扩大枸杞种植面积;在可种植区可适当种植枸杞,以优化农业产业结构,但不可盲目扩大种植面积。柴达木盆地南面、北面和西北面属高海拔山脉区,水资源缺少,不适宜种植枸杞。[结论]该研究为进一步科学地优化农业产业结构和合理布局枸杞种植提供参考依据。

[Objective] To study the climate regionalization of Lycium barbarum L. planting in Qaidam Basin of Qinghai Province. [Method]Based on meteorological data from 22 meteorological stations around and in Qaidam basin of Qinghai Province as well as 1∶ 500 000 geographic information data,the regression model of climate zoning factors and geographic information for L. barbarum L. planting in Qaidam Basin was established by multiple regression analysis,and the continuous spatial distribution of meteorological data was realized by interpolation operation based on GIS technology. Afterwards,meteorological factors suitable for planting of L. barbarum L. were analyzed to determine the thresholds of climate zoning indicators of L. barbarum L. planting. Finally,the climate regionalization of L. barbarum L. planting in Qaidam Basin was conducted by using GIS technology. [Result]The planting areas of L. barbarum L. in Qaidam Basin was divided into most suitable,suitable,planting and non- growing areas. In the basin,31. 4% of the areas were suitable for the growth of L. barbarum L.,including the northwest of Dulan County,Dagele Town,Guolemude Town,and Wurumeiren Town in the middle and north of Golmud,and some areas in the northeast of Mangya Town and the south of Lenghu Town. In the suitable areas with irrigation conditions,the planting area of L. barbarum L. should be increased;L. barbarum L. can be planted suitably in the planting areas to optimize agricultural industry structure. In mountainous areas in the south,north and northwest of Qaidam Basin,there existed shortage of water resources,so these areas were not suitable for planting L. barbarum L. [Conclusion]The study can provide scientific references for the optimization of agricultural industry structure and reasonable distribution of L. barbarum L. planting in Qaidam Basin.