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| 岩溶山地生态退化的海拔空间变异 | |
| 引用本文： | 罗林,周应书,何兴辉,谢永贵,王敏,吴明艳.岩溶山地生态退化的海拔空间变异[J].生态与农村环境学报,2009,25(1). |
| 作者姓名： | 罗林 周应书 何兴辉 谢永贵 王敏 吴明艳 |
| 作者单位： | 1. 贵州省毕节地区水土保持办公室,贵州,毕节,551700 2. 贵州省毕节地区林业科学研究所,贵州,毕节,551700 3. 贵州省林业调查规划院,贵州,贵阳,550003 |
| 摘 要： | 为揭示岩溶山地生态退化的海拔空间变异,应用地统计学对地处滇黔桂连片岩溶腹地,海拔变化范围广的贵州省毕节地区生态退化指标的垂直梯度空间变异进行分析.石化率的半变异函数最佳理论模型为线性有基台模型,植被覆盖率、土壤砾石率为球状模型.植被覆盖率的空间异质比为22.32%,具有强烈的垂直梯度空间相关性,主要受到随海拔梯度变化的自然性控制因素的作用;石化率、土壤砾石率的空间异质比分别为34.38%、25.97%,均具有中等程度的垂直梯度空间相关性,受随机因素的作用较大.土壤砾石率、植被覆盖率的变程分别为968.10、859.48 m,受因素影响的海拔范围都较宽;石化率的变程为52.28 m,受因素影响的海拔范围很窄.石化率、植被覆盖率的Moran′s Ⅰ系数随海拔梯度变化的趋势相类似,但土壤砾石率的Moran′s Ⅰ系数随海拔梯度变化的趋势与石化率、植被覆盖率的差别较大. |
| 关 键 词： | 岩溶 生态退化 海拔 地统计学 空间变异 |
Analysis of Altitudinal Spatial Variability of Ecological Degeneration in Karst Mountains Area |
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| LUO Lin,ZHOU Ying-shu,HE Xing-hui,XIE Yong-gui,WANG Min,WU Ming-yan.Analysis of Altitudinal Spatial Variability of Ecological Degeneration in Karst Mountains Area[J].Journal of Ecology and Rural Environment,2009,25(1). | |
| Authors: | LUO Lin ZHOU Ying-shu HE Xing-hui XIE Yong-gui WANG Min WU Ming-yan |
| Institution: | 1.Water and Soil Conservation Office of Bijie Prefecture;Guizhou Province;Bijie 551700;China;2.Forestry Science Institute of Bijie Prefecture;3.Guizhou Forestry Survey and Planning Institute;Guiyang 550003;China |
| Abstract: | To reveal altitudinal spatial variability of ecological degeneration in Bijie Prefecture,Guizhou Province,vertical gradient of ecological degeneration indexes were analyzed using geostatistics.The study site is in the centre of Yunnan,Guizhou,Guangxi Karst area where the altitudinal variation ranges widely.The optimal semivariogram theoretical model of bedrock exposure rate was linear with a sill model;the vegetation cover and soil gravel rates were a spherical model.The spatial relativity of vegetation cov... |
| Keywords: | Karst ecological degeneration altitudinal geostatistics spatial variability |
| 本文献已被 CNKI 万方数据 等数据库收录！ | |