云南省松材线虫适生区的精细化评估

Refined Evaluation of the Suitable Areas of Bursaphelenchus xylophilus in Yunnan Province

以90m×90m为最小面积单元,评估了云南省松材线虫的适生性。按高度适生、适生、中度适生、不适生4个水平,给出了全云南省每一个栅格单元水平上的适生性分布地图。结果表明高度适生区土地面积在70%以上的县有13个,在50%～70%之间的县有17个,在25%～50%之间的县有27个,在5%～25%之间的县有26个,5%以下县有26个。在像素点水平上建立空间模型进行适生区分析或风险区分析是一种新的技术方法,能为基层单位的病虫害防治提供精细化的空间数据。

Taking 90 m × 90 m as the smallest spatial unit, Bursaphelenchus xylophilus suitable areas was evaluated in Yunnan Province. The suitable distribution map of the whole Yunan was given at four levels： high suitable, suitable, moderate suitable, not suitable. The results showed that for the high suitable areas＇ proportion, 13 Counties were over 70%, 17 Counties were from 50% to 70%, 27 Counties were from 25% to 50%, 26 Counties were from 5% to 25% and 26 Counties were taken below 5%. It is a new method to build spatial models to do suitable analysis or risk analysis at a pixel level. And it usually offers the refined spatial data for local forest organizations to prevent and control plant diseases and insect pests.