Effects of Rehabilitation Measures on Properties of the Severely Eroded Lateritic Red Soil in Southeastern Fujian, China

摘要

In the southeastern Fuian, China, deforestation has led to serious soil erosion and degradation, which troubled the rehabilitation and reconstruction of the degraded ecosystem very much. This paper studied the effects of several rehabilitation measurements on the soil characteristics of this severely eroded lateritic red soil. Under taking the harness measures, the soil antierodibility has been strengthened, the soil structure and the moisture condition have been improved, the soil organic matter content has been increased, the quality of soil humus has been improved, the soil nutrient availabilities and nutrient pools has been increased obviously. Also, the amount of soil microorganism has been increased sharply, the soil respiration and enzyme activity has been intensified and the soil fertility was in recovering. It suggested that adopting leguminous tree species such as Acacia auriculae formis instead of solely planting fruit trees is advantageous to soil fertility. Also, it suggest that increasing ground mulch such as introducing leguminous plants to orchard is an important technical measure for controlling soil erosion and improving soil fertility.