Centro de Investigaciones sobre Desertificación-CIDE Jaime Roig, 11, 46010, Valencia, Spain.
Environ Monit Assess. 1995 Jan;37(1-3):5-15. doi: 10.1007/BF00546877.
In the Spanish Mediterranean environment, scrub vegetation occupies a greater area than does forest. The impact of wildfire on the scrub vegetation and recovery afterward affects a number of other processes, including water erosion. While recovered vegetation considerably influences soil protection and erosion control, this function has scarcely been studied. This study discusses the behavior and architecture of recovering (or regenerating) typical Mediterranean shrub vegetation and the subsequent impact on soil protection. The study compared two protective forage species (Medicago arborea L. and Psoralea bituminosa L.). The research was performed in field conditions on a set of four experimental plots. A control plot was maintained with no vegetation cover. Runoff and soil loss by water erosion between 1989 and 1992 were studied on each of these plots. The natural vegetation was found to have a more significant protective effect (69.2% decrease in soil loss) than the other species tested. Soil loss on the Medicago plot decreased by 41.7%, and soil loss on the Psoralea plot decreased by 29.3%. That the Psoralea was only recently planted must be considered in evaluating its protective effects.
在西班牙地中海环境中，灌木丛植被比森林占据更大的面积。野火对灌木丛植被的影响及其后的恢复会影响到许多其他过程，包括水侵蚀。虽然恢复的植被对土壤保护和侵蚀控制有很大的影响，但这一功能几乎没有得到研究。本研究讨论了典型地中海灌木植被的恢复（或再生）行为和结构，以及随后对土壤保护的影响。该研究比较了两种具有保护作用的饲料物种（Medicago arborea L.和 Psoralea bituminosa L.）。研究是在野外条件下，在四组实验小区进行的。一个对照小区没有植被覆盖。在 1989 年至 1992 年期间，对每个小区的径流量和水蚀土壤流失进行了研究。结果发现，自然植被的保护作用更为显著（土壤流失减少 69.2%），比其他测试物种的效果更好。在 Medicago 小区，土壤流失减少了 41.7%，在 Psoralea 小区，土壤流失减少了 29.3%。在评估 Psoralea 的保护作用时，必须考虑到它是最近才种植的。
