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为了对江西省赣江源区内主要土类的抗蚀性能进行研究,测定各土类的有机质质量分数、密度、抗蚀指数、团聚度、团聚状况、分散率、分散系数、结构破坏率和水稳性团聚体含量等抗蚀性指标,进行主成分分析。结果表明,土壤的抗蚀性大小顺序为:山地矮林土(74.67)>黄壤(61.90)>山地黄红壤(47.26)>黄红壤(44.77)>紫色土(39.79)>红壤(28.34)。在红壤、紫色土区域不仅要预防以暴雨为主要侵蚀力的水土流失,而且需采取相应的措施增加地被物覆盖度、减少人为破坏,以及通过施肥等措施增加土壤的抗蚀性,从而减少水土流失;山地黄红壤、黄红壤区域必须对民众做好宣传工作,在开发利用的同时加强人们对生态环境的保护意识,避免边治理边破坏现象一再发生;黄壤和山地矮林土地区,在综合利用时注意保持现有的良好生态环境,尽可能地避免有利于水土流失活动行为的发生;土壤有机质质量分数、团聚度、团聚状况是评价赣江源自然保护区土壤抗蚀性强弱的最好指标。
In order to study the corrosion resistance of main soil in Gan River source area of Jiangxi Province, the organic matter mass fraction, density, corrosion index, agglomeration, agglomeration, dispersion, dispersion coefficient, structural failure rate Water-stable aggregate content and other corrosion resistance indicators, the principal component analysis. The results showed that the order of the soil erosion resistance was as follows: mountain dwarf soil (74.67)> yellow soil (61.90)> yellow soil red soil (47.26)> yellow red soil (44.77)> purple soil (39.79)> red soil (28.34). In red soils, the purple soil area should not only prevent water and soil loss which is mainly caused by rainstorm, but also take appropriate measures to increase the coverage of the ground cover, reduce man-made damage and increase soil corrosion resistance through fertilization and other measures to reduce soil erosion Soil and water loss; mountain yellow red soil, yellow-red soil region must do a good job publicity work, in the development and utilization of people’s awareness of conservation of the environment to strengthen, to avoid damage while re-occurring side by side governance; yellow soil and mountain pines area, The comprehensive utilization should pay attention to maintaining the existing good ecological environment and avoid the activities that are conducive to soil and water loss as much as possible. The soil organic matter mass fraction, reunion and reunion are the evaluation of the soil erosion resistance in the Ganjiang River Nature Reserve The best indicator.