退化岩溶生态地区植被恢复对土壤化学性质的影响——以石林地区为例  

Effects of Vegetation Recovery on Soil chemical properties in Karst areas of degraded ecosystems——A case in shilin region

作　　者：徐贵生[1] 吴小勇[1] 

机构地区：[1]云南师范大学旅游与地理科学学院,云南昆明650092

出　　处：《宜春学院学报》2009年第6期110-113,共4页Journal of Yichun University

摘　　要：以石林喀斯特地区植被恢复过程中典型样地为研究对象,选择了草从、灌草丛、次生林、原生林、人工林和玉米耕地六种植被类型的土壤PH值,有机碳,全氮含量与C/N比进行了分析比较。结果显示:植被恢复程度越高,土壤PH值就越小,而土壤有机质含量越高;人工造林与植被自然恢复相比,植被自然恢复更有利于土壤质量的改善和植被的生长;耕地与其它样地相比,在退化岩溶生态系统地区,人类活动与不合理利用土地都会使土壤质量受到严重影响。因此,我们平时要注意对喀斯特地区的植被保护,特别是石漠化严重的地区,要严厉禁止人为再次干扰,使各种植被更快更好地恢复起来。Taking the typical samples of vegetation recovery in Shilin karst area as object of study,through analyzing the soil organic carbon,PH value,total nitrogen content and C/N ratio of which are underbrush,brush,YuanShengLin coppice,stemflow and corn farmland.Results showed that the higher the vegetation restoration,the smaller the degree of soil PH value,and the higher content of soil organic matter,Reforestation,compared with natural recovery,natural recovery more contributes to improving the quality of the soil and vegetation growth.Compared with other plots of arable land in the area of degraded karst ecosystem,human activities and the irrational use of land will be severely affected the quality of the soil.Therefore,we should pay attention to protecting the in vegetation of karst area,especially in desertification area,forbidden man-made interference,making all kinds of vegetation again recover faster and better.

关 键 词：退化岩溶生态系统 石林喀斯特 植被类型 土壤化学性质 植被恢复 

分 类 号：S714.2[农业科学—林学]