基于MaxEnt模型的两种捕食性盲蝽潜在分布区及其适生性分析

发布时间：2018-10-12 07:24

【摘要】：【目的】为了预测和分析稻飞虱的两种重要捕食性天敌中华淡翅盲蝽Tytthus chinensis和黑肩绿盲蝽Cyrtorhinus lividipennis的潜在分布区,研究气候环境因素对其潜在分布的影响。【方法】Max Ent是以最大熵理论为基础的预测物种地理分布的模型,本文运用Max Ent模型,根据这两种盲蝽的已知分布区及其气候环境影响因素,推测这两种盲蝽的适生性分布及气候环境因素的影响。【结果】中华淡翅盲蝽主要适宜分布区域为中国秦岭-淮河以南地区、东北亚的朝鲜半岛和日本、东南亚以及菲律宾和印度尼西亚群岛部分地区,即东洋区和大洋区北部群岛;黑肩绿盲蝽适宜分布区比中华淡翅盲蝽更广,可达山东、河北以南,陕西、云南、贵州以东的中国大部地区,海外除中华淡翅盲蝽分布区外,也可分布于南美亚马逊雨林地区。研究还发现,最热季度降雨量、平均日温差对中华淡翅盲蝽、黑肩绿盲蝽适宜性分布有重要影响;夏季降雨量大于500 mm、平均日温差低于10℃,有利于这两种盲蝽的分布。【结论】两种捕食性盲蝽适宜生境主要受最热季度降雨量、平均日温差影响。本研究为发挥这两种捕食性盲蝽在害虫生物防治中的作用提供了重要依据。
[Abstract]:[objective] to predict and analyze the potential distribution areas of Tytthus chinensis and Cyrtorhinus lividipennis, two important predatory natural enemies of rice planthopper. [methods] Max Ent is a model based on maximum entropy theory to predict the geographical distribution of species. The Max Ent model is used in this paper. According to the known distribution of the two species and their climatic and environmental factors, [results] the main suitable distribution areas of these two species were the south of Qinling and Huaihe River in China, the Korean Peninsula in Northeast Asia and Japan. Southeast Asia as well as parts of the Philippines and Indonesia, that is, the Oriental region and the northern islands of the Oceanic region; the suitable distribution area of the black-shouldered green bug is wider than that of the Chinese alpine bug, reaching to Shandong, south of Hebei, Shaanxi, Yunnan, Most parts of China to the east of Guizhou can also be found in the Amazon rainforest of South America. It was also found that the hot seasonal rainfall and the average daily temperature difference had important effects on the distribution of the suitability of the two species, and the average daily temperature difference of mm, in summer was lower than 10 鈩，

本文编号：2265275