| 黑河上游天然草地亚洲小车蝗蝗蝻与成虫多度分布与地形关系的GAM分析 |
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| 引用本文： | 张军霞,赵成章,殷翠琴,李丽丽,侯兆疆,张静.黑河上游天然草地亚洲小车蝗蝗蝻与成虫多度分布与地形关系的GAM分析[J].昆虫学报,2012,55(12):1368-1375. |
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| 作者姓名： | 张军霞 赵成章 殷翠琴 李丽丽 侯兆疆 张静 |
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| 作者单位： | 西北师范大学地理与环境科学学院,甘肃省湿地资源保护与产业发展工程研究中心,兰州730070 |
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| 基金项目： | 国家自然科学基金项目(91125014,40971039);甘肃省科技支撑计划项目(1011FKCA157);甘肃省高校基本科研业务费项目 |
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| 摘 要： | 环境异质性是生物空间格局形成与维持的重要条件， 蝗虫的空间分布是物种长期适应自然环境的结果， 反映了蝗虫与生存环境的协同进化机制。在2009年7-8月野外调查的基础上， 借助GIS和S-PLUS 8.0软件， 利用广义相加模型（GAM）研究了祁连山北坡黑河上游亚洲小车蝗Oedaleus asiaticus蝗蝻与成虫多度分布与海拔、 坡向、 坡度和剖面曲率等6类地形因子之间的关系。结果表明： 亚洲小车蝗蝗蝻与成虫的多度分布与地形因子关系的GAM模型具有不同的模型结构、 模拟效果以及结果的稳定性， 能够较好地体现二者所受地形因子影响的差异。各地形因子对亚洲小车蝗蝗蝻与成虫多度的影响不尽相同， 海拔对二者的多度分布起主导控制作用， 蝗蝻与成虫的多度均随海拔的升高大体呈现倒“V”型变化趋势， 但蝗蝻在海拔梯度上的分布上限明显大于成虫。成虫主要集中分布在剖面曲率<0的区域， 蝗蝻主要集中分布在南坡与西南坡。亚洲小车蝗蝗蝻与成虫对环境选择的异质性属性， 使蝗蝻和成虫在相同地形要素的分布格局存在明显差异。
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| 关 键 词： | 亚洲小车蝗 蝗蝻 成虫 空间分布 空间多度 地形 GAM模型 祁连山 |
Relationship between the spatial pattern of nymph and adult abundance of Oedaleus asiaticus (Orthoptera: Acrididae) and topography in the alpine grassland in the upper reaches of Heihe River analyzed with the GAM model |
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| ZHANG Jun-Xia,ZHAO Cheng-Zhang,YIN Cui-Qin,LI Li-Li,HOU Zhao-Jiang,ZHANG Jing.Relationship between the spatial pattern of nymph and adult abundance of Oedaleus asiaticus (Orthoptera: Acrididae) and topography in the alpine grassland in the upper reaches of Heihe River analyzed with the GAM model[J].Acta Entomologica Sinica,2012,55(12):1368-1375. |
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| Authors: | ZHANG Jun-Xia ZHAO Cheng-Zhang YIN Cui-Qin LI Li-Li HOU Zhao-Jiang ZHANG Jing |
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| Affiliation: | (Research Center of Wetland Resources Protection and Industrial Development Engineering of Gansu Province, College of Geography and Environmental Science, Northwest Normal University, Lanzhou 730070, China) |
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| Abstract: | The environmental heterogeneity is an important mechanism underlying the formation and maintenance of bio-geographic pattern. The spatial pattern of grasshopper species is the result of long term adaptation in nature, reflecting the co-evolution mechanisms with which grasshoppers adapt to the habitats. Through field survey from July to August, 2009, by using the GIS and S-PLUS 8.0, we developed the GAM model for the relationship between nymph and adult adundance of Oedaleus asiaticus and topographic indices in the upper reaches of Heihe River on the northern slope of the Qilian Mountains. The topographic indices included elevation, direction, slope, position, profile and plane. The results showed that the structure and D2 values of models were different for O. asiaticus nymphs and adults, so was the model stability in modeling, indicating their differences in response to the gradients of topographic indices. The gradient analysis in this model showed that the locust nymphs and adults were distributed in a wide range of environments, in different gradients of elevation, direction, slope, position, profile and plane, and in all land positions. However, it does not mean that the distribution of locust nymphs and adults is equally affected by each factor, or has a uniform distribution probability in the whole environmental range. The GAM modeling indicated that the distribution of locust nymphs and adults were mainly controlled by the elevation. With the elevation increasing, the abundance of locust nymphs and adults showed an upside-down “V” trend, but the upper limit of elevation for distribution of the locust nymphs was higher than that of adults. Adults had higher abundance in the whole regions, but they were mainly located in the region where the profile is less than 0, while the nymphs mainly concentrated in the south and southwest slopes, which was consistent with the actual observation results. The heterogeneity of O. asiaticus in selecting habitats made the spatial pattern of locust nymphs and adults in the same terrain obviously different. |
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| Keywords: | Oedaleus asiaticus" target="_blank">Oedaleus asiaticus')" href="#">Oedaleus asiaticus nymph adult spatial distribution spatial abundance topography GAM Qilian Mountains |
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