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| 天祝高寒草甸土壤容重与孔隙度时空变化研究 | |
| 引用本文： | 路远,张万祥,孙榕江,常根柱.天祝高寒草甸土壤容重与孔隙度时空变化研究[J].草原与草坪,2009(3):48-51. |
| 作者姓名： | 路远 张万祥 孙榕江 常根柱 |
| 作者单位： | 1. 中国农业科学院,兰州畜牧与兽药研究所,甘肃,兰州,730050 2. 甘肃省草原技术推广总站,甘肃,兰州,730046 3. 北京科技经营管理学院,北京,100000 |
| 基金项目： | 中央级公益性科研院所基本科研业务费专项资金“美国杂交早熟禾引进驯化及种子繁育技术研究(BRF060203)”资助 |
| 摘 要： | 选取天祝高寒草句线叶嵩草草地（Kobresia capillifolia pasture）、莎草一禾草草地（sedgegrass pasture）、禾草一杂类草草地（grass-forb semi-artificial pasture）及珠芽蓼草地（Polygonum viviparum pasture）4块样地的土壤为研究对象，通过对其土壤的物理性状取样分析，结果表明：土壤容重与孔隙度随时间无确定的变化规律；土壤空间结构变化规律明显，均表现出土壤容重随土层深度增加而逐渐增大，土壤孔隙度随土层深度增加而逐渐减小的规律。并且禾草一杂类草半人工草地的土壤容重小于其他3个样地，说明其表层土壤孔隙度增大，通气透水性好。 |
| 关 键 词： | 高寒草甸 土壤容重 土壤孔隙度 时空变化 |
Study on spatial-temporal changes of soil bulk density and soil porosity of alpine meadow in Tianzhu |
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| LU Yuan,ZHANG Wan-xiang,SUN Rong-jiang,CHANG Gen-zhu.Study on spatial-temporal changes of soil bulk density and soil porosity of alpine meadow in Tianzhu[J].Grassland and Turf,2009(3):48-51. | |
| Authors: | LU Yuan ZHANG Wan-xiang SUN Rong-jiang CHANG Gen-zhu |
| Institution: | 1.Lanzhou Institute of Animal & Veterinary Pharmaceutics Sciences;CAAS;Lanzhou 730050;China;2.Glassland Station of Gansu Province;Lanzhou 730046;3.Beijing Science Technology and Mangement College;Beijing 100000;China |
| Abstract: | The soil physical poperties of 4 types of alpine meadow(Kobresia capillifoli,sedge+grass,grass+forb,Polygonum viviparum) in Tianzhu was studied.The results showed that there was no fixed variation pattern in soil bulk density and soil porosity among different types,while the variation regulation of the soil spatial structure was clear.The soil bulk density increased and soil porosity decreased along with the soil depth.The soil bulk density of semi-artificial pasture was smaller than other three plots. |
| Keywords: | alpine meadow soil bulk density soil porosity spatial-temporal change |
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