| 黑河上游天然草地蝗蝻空间格局异质性 |
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| 引用本文： | 赵成章,李丽丽,殷翠琴,张军霞,盛亚萍.黑河上游天然草地蝗蝻空间格局异质性[J].兰州大学学报(自然科学版),2011(3). |
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| 作者姓名： | 赵成章 李丽丽 殷翠琴 张军霞 盛亚萍 |
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| 作者单位： | 西北师范大学地理与环境科学学院; |
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| 基金项目： | 国家自然科学基金项目(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： | 采用地统计学方法,研究了黑河上游祁连山地天然草地1～5龄蝗蝻混合种群在大尺度多海拔区域中的空间格局异质性.结果表明:不同龄期蝗蝻的空间格局都呈现聚集型分布,但随着龄期的增长,聚集程度由低龄聚居型转为高龄散居型,空间依赖范围也逐渐变大;空间自相关性因龄期的不同而表现为以4龄为峰值的倒U型变化趋势;空间分布趋势主要集中在东北—西南向和西北—东南向上,并且随着龄期的不断增长,西北—东南向的变化趋势性不断增强,而东北—西南向的变化趋势性逐渐减弱;海拔梯度上垂直分异现象明显,整体上形成了互补性和均衡性条带式斑块结构.这种动态的聚集扩散过程以及空间异质性规律,反映了草地蝗蝻在海拔梯度上出土顺序以及对气候的多元适应性.
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| 关 键 词： | 蝗蝻 空间异质性 地统计学 祁连山地 |
Spatial heterogeneity of grasshopper nymphs in natural grass in the upper reaches of Heihe river basin |
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| ZHAO Cheng-zhang,LI Li-li,YIN Cui-qin,ZHANG Jun-xia,SHENG Ya-ping College of Geography , Environment Science,Northwest Normal University,Lanzhou ,China.Spatial heterogeneity of grasshopper nymphs in natural grass in the upper reaches of Heihe river basin[J].Journal of Lanzhou University(Natural Science),2011(3). |
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| Authors: | ZHAO Cheng-zhang LI Li-li YIN Cui-qin ZHANG Jun-xia SHENG Ya-ping College of Geography Environment Science Northwest Normal University Lanzhou China |
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| Institution: | ZHAO Cheng-zhang,LI Li-li,YIN Cui-qin,ZHANG Jun-xia,SHENG Ya-ping College of Geography and Environment Science,Northwest Normal University,Lanzhou 730070,China |
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| Abstract: | The big-scalespatial heterogeneity of grasshopper nymps from the first to the fifth age in natural grass of various elevations in the upper reaches of Heihe river basin was analyzed with geographical statistic methods, indicating an aggregated spatial arrangement and horizontal distribution.The results showed that the spatial pattern of different ages was of aggregated distribution,with age,aggregation degree turning into old dispersive larva from young aggregated larva and the scope of spatial dependence e... |
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| Keywords: | nymph of grasshopper spatial heterogeneity geostatistic analysis Qilian mountain |
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