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岩溶生态系统的土壤特性及其今后研究方向
引用本文:李阳兵,王世杰,王济.岩溶生态系统的土壤特性及其今后研究方向[J].中国岩溶,2006,25(4):285-289.
作者姓名:李阳兵  王世杰  王济
作者单位:1. 贵州师范大学地理与生物科学学院,贵州,贵阳,550001
2. 中国科学院地球化学研究所环境地球化学国家重点实验室,贵州,贵阳,550002
基金项目:黔教科办(2004)07、教育部“新世纪优秀人才支持计划资助”(NCET-05-0819)
摘    要:岩溶石漠化退化土地是目前西南岩溶地区经济发展、生态恢复与重建工作中严重的问题之一。由于岩溶生态系统的独特性和脆弱性,岩溶生态系统土壤具有不同于其它生态脆弱区土壤的特征,本文将其归纳为成土速率决定的在人类活动尺度下土壤不可再生性即脆弱性、土壤侵蚀(土层丢失)的独特性、土壤退化过程中空间分布的斑块化及其与岩性的相关性、土壤退化过程中有机碳活性成分下降和来源变化、土壤退化导致岩溶生态系统生态过程中断。因此,在退化岩溶生态系统的研究中,要加强对岩溶生态系统土壤特性及退化恢复理论的研究。

关 键 词:岩溶生态系统  土壤特性  研究方向
文章编号:1001-4810(2006)04-0285-05
收稿时间:2006-08-14
修稿时间:2006年8月14日

SOIL PROPERTIES IN KARST ECOSYSTEM AND FURTHER STUDY
LI Yang-bing,WANG Shi-jie and WANG Ji.SOIL PROPERTIES IN KARST ECOSYSTEM AND FURTHER STUDY[J].Carsologica Sinica,2006,25(4):285-289.
Authors:LI Yang-bing  WANG Shi-jie and WANG Ji
Institution:1, School of Geography and Biology Science, Guizhou Normal University, Guiyang,Guizhou 550001, China; 2. State Key Laboratory of Environmental Geochemistry, Institute of Geochemistry, Chinese Academy of Science, Guiyang, Guizhou 550002, China
Abstract:Rocky desertification of land in karst area is one of the most serious problems,which retards economy development,ecosystem rehabilitation in Southwest China.Because of the unique eco-system characters and fragilities of karst ecosystem,the soil degradation in karst ecosystem has different degradation characteristics and processes that differentiated other ecologically fragile regions as follows:(1) the non-renewable ability and fragility of soil resource limited by the pedogenesis rate;(2) unique soil erosion(soil loss);(3) accelerated soil patches formation in the process of soil degradation related with lithologic differences;(4) active soil organic matter decrease and origins of soil organic matter change in the process of soil degradation;(5) the interruption of karst ecosystem processes resulting from soil degradation.Therefore,the soil degrading characteristics and restoration theory should be emphasized in order to make contribution to the restoration and rehabilitation of degraded karst ecosystem.
Keywords:Karst ecosystem  Soil properties  Further research
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