江西省丘陵山区红壤非耕地土壤退化的研究

江西省内丘陵山地红壤非了主要有天然阔叶林，人工杉木林，人工马尾松林，人工油菜林和荒地，经过对这些非耕地土壤进行大量面上调查和定位研究后发现，除天然阔叶林外，这些非耕地土壤的退化现象极为普遍，其主要表现形式为：土壤剖面的逆向发育，土壤质地突变，土壤养分状况和土壤物理性状的恶化，研究同时表明，导致土壤产生退化的主要原因为：（１）林业生产过程中林木更新和营林技术粗放；（２）林地投入少；（３）陡坡开肝；（

A STUDY ON THE SOIL DETERIORATION OF THE NON-CROPPING LANDS IN THE HILLY AND MOUNTAINOUS RED EARTH REGIONS IN JIANGXI PROVINCE

The utility types of the uncultivated land in the hilly and mountainous red earth regions are mainly: broad-leaved forest, man-made Chinese Fir forest, man-made pine forest, man-made oil-tea plantation and deserted land. After broad investigation and field study on them, it is found that, except for the broad-leaved forest, soil degeneration is very common on the uncultivated lands, which including the regressive development of soil profile, abruption of soil texture, deterioration of soil nutrient status and soil physical property. Meanwhile, the study indicates that the factors which lead to soil deterioration are mainly: 1)unduly forest regeneration method and management technique adopted in the forestry, 2)low input into the forest soil, 3)cultivation of steep slopes and 4)destruction of the organic floor by gathering firewood and litter on the ground. Some counter measures are suggested in this paper to prevent the uncultivated land in the hill and mountain area from deterioration.