• 中文核心期刊
  • CSCD来源期刊
  • 中国科技核心期刊
  • CA、CABI、ZR收录期刊

气候变化背景下黑刺粉虱在中国的适生区预测

Distribution of Aleurocanthus spiniferus in China with Changing Climate

  • 摘要:
    目的 预测当前及未来气候情景下黑刺粉虱在中国的适生分布范围及其适生程度,探究环境变量对黑刺粉虱分布的影响,揭示影响其分布的主导气候因子,为茶园黑刺粉虱的监测预警和防控提供理论依据和实践指导。
    方法 运用MaxEnt模型,结合ArcGIS软件预测黑刺粉虱的适生分布范围及其适生程度,利用Jackknife刀切法计算影响黑刺粉虱潜在分布的主要环境变量。
    结果 MaxEnt模型预测可知AUC值为0.894,说明模型预测结果可信度较高。利用Jackknife刀切法计算得到影响黑刺粉虱潜在分布的主要环境变量为年平均温(bio1)、年平均降水量(bio12)、最干月份降水量(bio14)。在当前及未来气候情景下黑刺粉虱的适生区广泛分布于我国大部分省份,其中高适生区主要集中在我国秦岭淮河以南的各个省份,适生程度由南向北逐渐递减。当前黑刺粉虱总适生区面积为277.49万km2,占国土面积的27.43%;其中高适生区面积占比最大,为116.21万km2,占总适生区面积的41.88%。
    结论 在未来多种气候情景下,黑刺粉虱在我国的分布范围有北移趋势,适生面积有少量增加,但总体而言其分布范围和适生程度未发生明显变化,表现出长期的稳定性。黑刺粉虱在中国适生区分布广泛,应加强监测预警和防控,保障茶叶安全优质生产。

     

    Abstract:
    Objective Potential distribution of Aleurocanthus spiniferus in China under the changing climatic conditions was analyzed to aid monitoring the pest movement, issuing early warning, implementing preventive measures, and controlling the infestation at tea plantations.
    Methods The MaxEnt model and ArcGIS software were employed to predict the areas and conditions of the spread of A. spiniferus in China. The Jackknife method was used to calculate the main environmental variables affecting the pest distribution.
    Results The AUC of the MaxEnt model prediction was highly reliable at 0.894. The major environmental variables affecting the potential distribution of A. spiniferus calculated by Jackknife were the annual average temperature (bio1), annual average precipitation (bio12), and precipitation in the driest month (bio14). Populations of A. spiniferus were likely to be found in most provinces of China under the perceivable scenarios on climate. The highly suitable habitats for the pests were in the provinces south of the Huaihe River in Mt. Qinling with a gradually decreasing trend northward in the region. At present, the total area in China suitable for spread of A. spiniferus was 2.7749 million km2, which is 27.43 % of the country’s entirety. Of which, 1.1621 million km2 was highly suitable, which accounted for 41.88% of the total national land mass.
    Conclusion The foreseeable changes on climate might shift the A. spiniferus populations to the most part of China northward with a minute increase on the “suitable area”. In general, the natural distribution of the pests appeared to be stable in long-term. Nonetheless, to closely monitor the movement for early warning, timely prevention, and effective control on the pest was indispensable to avoid major infestation on tea plants.

     

/

返回文章
返回