【作者】 杨光； 汪季； 高永； 郭建英；

【Author】 Yang Guang~1,Wang Ji~1,Gao Yong~1,Guo Jianying~2 (1 College of Ecological Environment,Inner Mongolia Agricultural University,Huhehaote 010019; 2 College of Soil and Water Conservation,Beijing Forestry University,Key Laboratory of Soil and Water Conservation and Desertification Combating,Ministry of Education,Beijing 100083)

【机构】 内蒙古农业大学生态环境学院； 北京林业大学水土保持与荒漠化防治重点实验室；

【摘要】 通过对比研究了陕西安塞县植被恢复区不同植被类型的林草地和农田的土壤物理性质,包括土壤容重、土壤孔隙度、土壤水稳性团粒结构。结果表明:不同植被类型的土壤容重为1.17～1.21克/立方厘米,差异较小,但均比农田(1.31克/立方厘米)低约11%,不同植被类型的各层土壤不同粒径的土壤团粒结构百分含量高于相应的天然草地和农田,其中刺槐×侧柏在所有土层中不同粒径的水稳性团粒结构含量都是最高的,并且0～20厘米土层中大于2毫米的团粒结构达到10.71%。实施植被修复后,与农田相比,林地土壤物理性质得到明显改善,混交林的土壤物理性质好于纯林林,天然草地和农田较差,天然草地略好于农田。更多还原

【Abstract】 This paper contrasted and researched the soil quality of different vegetation zone with plant restoration and farmland,including soil bulk density,soil porosity, soil water stable aggregate structure in Ansai county of Shanxi province.The results showed that the soil bulk density in different vegetation zone varied from 1.17～1.21 g/cm~3,there is no significant difference.All of which was 11%lower than that in farmland. The percent content of soil aggregate structure in different particle size of diffenent vegetation zone was higher than that in natural grassland and farmland,the highest content of which was in vegetation zone of Robinia pseucdoacacia×Platycladus orientalis,and the particle size in above 2mm was amounted to 10.71%in depth of 0～20 cm soil layer.After plant restoration,soil physical quality was clearly improved compared with farmland, the soil physical quality in mixtured plantation was better than pure plantation,which was weak in natual grassland and farmland,the soil physical quality in natual grassland was a little better than farmland.更多还原