典型岩溶区石漠化和土壤侵蚀遥感解译与关键问题

Remote Sensing of Rock Desertification and Soil Erosion in Typical Karst Area and the Key Problems

以典型岩溶石漠化综合治理区广西百色果化示范区为研究对象,基于水利部制定的我国西南岩溶区石漠化和土壤侵蚀遥感解译标准,并运用石漠化综合指数(KDI)和土壤侵蚀综合指数(SEI),对其石漠化程度和土壤侵蚀强度进行动态研究。结果表明:果化示范区经过石漠化和土壤侵蚀综合治理后,石漠化程度总体上有所减弱,而土壤侵蚀总体上却有所增强,这主要与水利部关于我国西南岩溶区土壤侵蚀遥感解译标准尚存的关键问题有关。对该关键问题的认知和修正,有助于科学地完善和统一我国西南岩溶区土壤侵蚀遥感解译标准。

Based on the remote sensing classification standards laid down by Ministry of Water Resources on rock desertification and soil erosion of karst area in Southwestern China,by using Karst Desertification Index（KDI） and Soil Erosion Index（SEI）,the karst desertification degree and soil erosion intensity in Guohua Demonstration Plot,typical karst rock desertification comprehensive management plot were dynamically evaluated in this paper.The results showed that the rock desertification degree is diminishing in the mass,but the soil erosion intensity is aggravating in the mass,mainly due to the key problems of the soil erosion remote sensing standards of karst area in Southwestern China laid down by Ministry of Water Resources.Realization and revision of the key problems may have contributed to optimize and unify the remote sensing classification standards on rock desertification and soil erosion of karst area in Southwestern China.