中国岩溶Issue(4)：456-463,8.DOI:10.11932/karst20140410
南洞流域东部重点区石漠化现状及治理对策
Current status and treatment of rocky desertification in key eastern areas of the Nandong subterranean river system
摘要
Abstract
To determine the current status and treatment of rocky desertification in eastern focus areas in the Nandong subterranean river system,the locations and causes of the rocky desertification,as well as the qual-ity of the eco-environment quality in the regional forest,were analyzed via remote sensing interpretation and field investigation.Research revealed that rocky desertification areas account for 17.2% of the area of karst regions in the study sites.The rocky desertification was predominately mild,and it was mainly located in the northwest Dazhuang basin.The problems of soil erosion were particularly serious in conj unction with rocky desertification.The quality of the eco-environment of the forest land in the karst area was mainly grade three and four,accounting for 53.77% of the study area.The quality of the eco-environment was relatively low, and obviously lower than that in non-karst areas.The primary factors affecting the formation and intensity of rocky desertification were farming methods and extensive animal husbandry.To ensure that the regional eco-logical agriculture,economic development and the underground water environment improve,something must be done to stop deforestation by farmers and to prohibit reclamation of wasteland.It is very important and necessary to recover vegetation and rehabilitate burnt slopes.Moreover,further research into rocky desertifi-cation in the eastern focus areas of the Nandong subterranean river system is needed to study not only the re-lationship between rocky desertification and the natural environment,but also special engineering and biolog-ical measures in karst areas,particularly methods of natural rehabilitation of karst rocky desertification.关键词
石漠化/分布特征/成因与危害/生态环境质量/治理对策/南洞东部重点区Key words
rocky desertification/distribution characteristics/causes and hazards/ecological environment quality/countermeasure/eastern key areas of Nandong underground river分类
农业科技引用本文复制引用
覃星铭,蒋忠诚,何丙辉,劳文科,李衍青,赵一,蓝芙宁..南洞流域东部重点区石漠化现状及治理对策[J].中国岩溶,2014,(4):456-463,8.基金项目
国家“十二五”科技支撑计划项目(2011BAC09B02、2012BAC16B02) （2011BAC09B02、2012BAC16B02）
中国地质大调查项目(12120114062601) （12120114062601）
广西自然科学青年基金项目(2013GXNSFBA019220) （2013GXNSFBA019220）
中国地质科学院重点实验室基本科研业务费资助项目(2010-SYS-16) （2010-SYS-16）
