苏北丘陵山区生态修复效果的监测与评价

Monitoring and Assessment of Ecological Restoration Effect for the Hilly Region of Northern Jiangsu Province

生态修复是治理水土流失的有效途径,是水土保持建设的新思路。近年来,各地都非常注重水土保持生态修复工程建设,对生态修复效果的监测评价就显得十分必要。该文对苏北丘陵山区生态修复项目区3a的监测成果进行了分析。结果显示:区内植物种群逐步增加,植被覆盖度逐年提高,从43.5%提高到98.4%。植物群落呈现多样性、稳定性发展,植物群落趋向良性循环,人工幼林长势良好。土壤侵蚀量由2758t/(km2.a)减少到1369t/(km2.a),减沙效益为50.4%,水土流失得到有效的控制。

Ecological restoration is an efficient way for treatment of soil and water loss and is a new idea for development of soil and water conservation.In recent years,a lot of attention has been paid to engineering construction for soil and water conservation and ecological restoration in various regions.It is thus necessary to have monitoring and assessment on the effect of ecological restoration.In this paper,analysis was performed on the monitoring results for the past three years of an ecological restoration project in the hilly region of northern Jiangsu province.The result shows that,inside the region,plants species groups increase gradually and vegetation coverage increases year by year（from 43.5% to 98.4%）.Plant tribes show varied and stable growth in a good cycle.Plantation of saplings grows well too.Soil erosion amount reduces from 2 758 t/（km2·a）down to 1 369 t/（km2·a）and sand reduction efficiency is 50.4%.Soil and water loss has been controlled efficiently.