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| 黄土高原丘陵沟壑区放牧林草地土壤团聚体性质研究 | |
| 引用本文： | 许永霞,廖超英,孙长忠,法蕾,唐海滨,边丹丹.黄土高原丘陵沟壑区放牧林草地土壤团聚体性质研究[J].干旱地区农业研究,2011,29(5):186-191. |
| 作者姓名： | 许永霞 廖超英 孙长忠 法蕾 唐海滨 边丹丹 |
| 作者单位： | 1. 西北农林科技大学资源环境学院,陕西杨凌712100;农业部黄土高原农业资源和环境修复重点开放实验室,陕西杨凌712100 2. 中国林业科学研究院华北林业实验中心,北京,102300 3. 西北农林科技大学林学院,陕西杨凌,712100 |
| 摘 要： | 通过放牧试验的方法,研究土壤团聚体含量和破坏率,以探讨不同放牧强度、不同放牧畜种、不同放牧植被类型条件下表土的团聚体(＞ 0.25 mm)含量和破坏率.结果表明:放牧强度对土壤性质有影响,重度放牧下土壤团聚体含量最小；从畜牧羊种选择来看,绵羊相对于山羊来说对土壤结构破坏较小,土壤中团聚体含量较高；对于不同植被类型,放牧... |
| 关 键 词： | 团聚体含量 团聚体破坏率 干筛大团聚体 湿筛大团聚体 放牧林草地 |
Soil aggregate properties of grassland and forest during grazing in hilly and gully areas on the Loess Plateau |
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| XU Yongxi,LIAO Chaoying,SUN Changzhong,FA Lei,TANG Haibin,BIAN Dandan.Soil aggregate properties of grassland and forest during grazing in hilly and gully areas on the Loess Plateau[J].Agricultural Research in the Arid Areas,2011,29(5):186-191. | |
| Authors: | XU Yongxi LIAO Chaoying SUN Changzhong FA Lei TANG Haibin BIAN Dandan |
| Institution: | College of Resources and Environment, Northwest A & F University, Yangling, Shaanxi 712100, China; Key Laboratory of Agriculture Resources and Ecosystem Remediation of Loess Plateau, Ministry of Agriculture, Yangling, Shaanxi 712100, China;Experimental Center of Forestry in North China, Chinese Academy of Forestry, Beijing 102300, China; College of Forestry, Northwest A&F University,Yangling, Shaanxi 712100, China |
| Abstract: | With the method of grazing field experiment, we studied the aggregate content and damage rate of the soil, so as to analyze surface soil aggregate (>0.25 mm) content and damage rate of different grazing intensity, different types of livestock and different types of vegetation. The results show that grazing intensity has certain effect on surface soil structrue and soil aggregate content is the least at heavy grazing intensity. Compared with goat selected as grazing livestock, sheep has less effect on destroying soil structure and has large quantity of soil aggregate. Compared with Caragana korshinkii kom, grazing grassplot has better soil structure. The results of damage rete of ag gregate is consistent with that of soil aggregate content. So it is concluded that all categories of grazing intensity, types of livestock and types of vegetation affect the surface soil aggregate nature. |
| Keywords: | soil aggregate content damage rete of aggregate large aggregate of dry sieve wet sieving large aggregates grazing ground |
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