广东土地抗蚀潜势初步研究

利用计算机和地理信息系统软件．研究了广东省的土壤质地、土壤有机质、地势三个侵蚀因子对土壤侵蚀方面的影响，指出了广东土地抗蚀性极弱地区主要是湛江市、新丰县的小部分地区，而抗蚀性弱的区域则很大，约占全省土地面积的49．8％，遍布全省中部和南部．针对这样的现状，提出要减少抗蚀性弱和极弱地区的土壤侵蚀，必须做到：对土地的利用开垦进行统一规划；严禁乱伐森林；采取生物措施和工程措施相结合的方式防治土壤侵蚀的进一步变化．

Preliminary Study on Land Erosion Resistance in Guangdong

Computer and geographical information system software were used to study the dffects of soil texture, soil organic matter and relief on soil erosion in Guangdong province. Results indicate that extremely low land erosion resistance mainly existed in the small areas of Zhanjiang and Xinfeng, and the area of low land erosion resistance was large,accounting for 49.8% of the whole land area of the province and being found all over foe middle and the southern. In the light of this status, the paper suggests that in order to reduce soil erosion of the regions of low land erosion resistance,land utilization and reclamation should be integratively planned, wanton felling of trees should be strictly forbidden, and biological measure combined with engineering measure to control soil erosion should be adopted.