高含硫气田净化厂运营期植被生态恢复研究

Study on Vegetation Ecological Restoration during the Operational Period of High Sulfur-Containing Natural Gas Purification Plant

天然气在净化过程中将会排放出大量的SO2,对其所在区域的林草植被将产生一定的负面影响。以某高含硫天然气净化厂为例,对其净化厂运营期排放SO2的浓度进行了预测。根据预测结果,高SO2浓度区域年均SO2浓度远低于敏感植物达到伤害阈值时的浓度,故在正常工况下,净化厂外排SO2不会对植被产生长期的影响,可维持该区域内植被现状;对施工创面,从实施植被恢复的角度进行了分类,对不同类型的边坡采用不同的植被恢复技术。提出的植被恢复方案不仅可以增加区域内的植被覆盖面积、提高区域内林草植被系统的稳定性,还将会带来明显的生态效益和良好的经济效益。

Natural gas would emit a large amount of SO2 during the purification process,which would negatively affect the vegetation in the area where the natural gas purification plant located.Taking a high sulfur gas purification plant as an example,the concentration of SO2 emissions during its operation period was predicted.According to the forecasting results,the average SO2 concentration in high emission area was far lower than the threshold concentration which would harm sensitive plants,thus under normal conditions,discharging SO2 from purification plant would not have long-term impact on vegetation but maintain the vegetation in the area.The wounds of construction were classified from the angle of vegetation restoration;and different vegetation restoration technology was taken for different types of slope.The vegetation restoration scheme would not only increase the area of vegetation coverage,improve the stability of the vegetation system in the area,but also would bring obvious ecological benefit and good economic benefit.