宜生区划分技术在新疆博乐意大利蝗监测中的应用

Application of mapping habitat suitability on Calliptamus italicus monitoring in Bole, Xinjiang

以新疆博乐意大利蝗为研究对象,利用3S技术对人工地面调查数据进行处理,分析植被组成、海拔高度、温度对意大利蝗分布的影响,并建立宜生区模型,计算出当地意大利蝗的宜生指数并生成宜生区分布图。结果显示,博乐市意大利蝗宜生区面积48.82万hm^(2),2018—2020年意大利蝗发生区与宜生区重叠率99.52%,实际发生区与宜生区基本完全吻合、与宜生指数为4级和5级区域的重叠率为58.81%。2017年意大利蝗分布区有96.98%与宜生区重叠。其中,与宜生指数为4级和5级区域的重叠率62.43%。

The Calliptamus italicus community in the Bole City of Xinjiang was selected for a case study. By processing the data of the field survey with 3 S technology, we analyzed the influence of vegetation composition, altitude, and temperature on the distribution of C. italicus. Then a habitat suitability model was constructed, and the spatial distribution of C. italicus in Bole was predicted. The results showed that the predicted habitat of C. italicus in Bole was488236.68 hm^(2), and the occurrence area coincided with the inhabitable area. 99.52% of the C. italicus occurrence area in2018-2020 was within the habitat, and 58.81% of the occurrence area overlapped with the area with the habitat suitability of grades 4-5. As for 2017, 96.98% of the C. italicus occurrence area overlapped with the habitat, of which the overlap rate with the habitat of grades 4-5 suitability was 62.43%. The application of habitat suitability as a mapping tool has been proven feasible and provided a new way of thinking and method for grassland locust monitoring.