Current status and treatment of rocky desertification in key eastern areas of the Nandong subterranean river system
QIN Xing-ming
JIANG Zhong-cheng
HE Bing-hui
LAO Wen-ke
LI Yan-qing
ZHAO Yi
LANFu-ning
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.
Keywords：rocky desertificationdistribution characteristicscauses and hazardsecological environment qualitycountermeasureeastern key areas of Nandong underground river
Publication Date：2014-10-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：8( 456-463 )