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| 沙粒粒径组成的空间异质性及其与灌丛大小和土壤风蚀相关性分析 | |
| 引用本文： | 王利兵,胡小龙,余伟莅,李钢铁,郭建英.沙粒粒径组成的空间异质性及其与灌丛大小和土壤风蚀相关性分析[J].干旱区地理,2006,29(5):688-693. |
| 作者姓名： | 王利兵 胡小龙 余伟莅 李钢铁 郭建英 |
| 作者单位： | 1. 内蒙古农业大学生态环境学院,内蒙古,呼和浩特,010019;内蒙古林业科学研究院,内蒙古,呼和浩特,010010 2. 内蒙古林业科学研究院,内蒙古,呼和浩特,010010 3. 内蒙古农业大学生态环境学院,内蒙古,呼和浩特,010019 |
| 基金项目： | 中国荒漠化监测中心多伦定位站项目基金资助 |
| 摘 要： | 空间异质性是土壤的重要属性之一。采用地统计学的理论和方法,研究了浑善达克沙地沙粒粒径组成的空间异质性。分析结果表明,各粒径的比例具有明显的空间异质性。在于107.30 m范围内,粉沙约有59.3%的空间异质性由随机因素引起的,而由空间自相关部分引起的空间异质性占40.7%;其余的空间异质性很少由随机因素引起的,其空间自相关部分引起的空间异质性占绝大部分。相关性分析表明:灌丛的冠幅越大,越有利于细沙、极细沙和粉沙的截留;各月的风蚀值与沙粒粒径的百分含量的相关性均和各月的平均风速有关。 |
| 关 键 词： | 浑善达克沙地 灌丛 粒径 空间异质性 变异函数 |
| 文章编号： | 1000-6060（2006）05-0688-06 |
| 收稿时间： | 2005-08-10 |
| 修稿时间： | 2006-03-20 |
Spatial heterogeneity of granule diameter and its relation with shrub size and soil erosion |
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| WANG Li-bing,tU Xiao-long,YU Wei-li,LI Gang-tie,GUO Jian-ying.Spatial heterogeneity of granule diameter and its relation with shrub size and soil erosion[J].Arid Land Geography,2006,29(5):688-693. | |
| Authors: | WANG Li-bing tU Xiao-long YU Wei-li LI Gang-tie GUO Jian-ying |
| Institution: | 1 Inner Mongolia Agricultural University, Huhhot 010019, Inner Mongolia, China ; 2 Inner Mongolia Academy of Forestry Science, Huhhot 010019, Inner Mongolia, China |
| Abstract: | Spatial heterogeneity is one of the important properties of soil.The composition of granule diameter,which is a stable natural property of soil,decides the performance and function of the soil to a great extent and is one of the necessary materials in the research of soil wind erosion.Geostatistics is one of the most powerful tools in the research of spatial heterogeneity and has been widely used in ecology recently.We use the principles and methods of geostatistics to study spatial heterogeneity of granule diameter and erosion in Hunshandak Sandy Land.The results of semivariogram analysis shows that in the sample,the sand with the granule diameter of(0.5)-0.25 mm has the most stable composition and the percentage of each other grain diameter has the obvious space heterogeneity.In the length of 107.30 m,about 59.3% of the space heterogeneity of the powder sand is caused by random factors,and 40.7% by the space autocorrelations and the rest space heterogeneity is rarely caused by random factors,but by space heterogeneity of autocorrelations.The relativity analysis shows that the bigger the shrub cluster is,the more advantageous for them to hold fine sand,mighty fine sand and powder sand;and the height of shrub cluster doesn't have great influence on the percentage composition of granule diameter.The monthly erosion value and the percentage composition of each grain diameter are all related to the average wind speed of each month. |
| Keywords: | Hunshandak Sandy Land shrub cluster grain diameter spatial heterogeneity semivariogram |
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