基于植被净初级生产力的煤矿区生态损失测度研究

以江苏徐州九里矿区为研究对象，采用基于遥感过程的CASA模型测算植被净初级生产力（Net Primary Productivity，NPP），研究结果表明：采用植被净初级生产力对矿区生态环境进行测度是可行的；从1987年到2008年间矿区NPP从18.019减小到9.261 gC/(m 2 ·月)，NPP平均变化量从0.293增加到3.389 gC/(m 2 ·月)，表明随着开采活动增强，矿区生态损失量增大；生态破坏区内NPP的变化范围为2.752～4.752 gC/(m 2 ·月)，生态影响区NPP的变化范围为0.152～0.352 gC/(m 2 ·月)，生态破坏区内NPP的变化量大于生态影响区；NPP的降低量与煤矿生产能力成正相关。矿井投产期NPP开始降低，稳产高产期NPP降低量最大，衰退期NPP降低幅度开始减小并且NPP有增大的趋势，矿区生态环境向良好的方向发展。

Study on the measurement of ecological loss based on the net primary productivity in coal mines

Taking Jiuli mine area of Xuzhou as an example,a NPP evaluation was taken by CASA model.The results indicate that:it is available to scale mining eco-environment by NPP;during the period of 1987—2008,the NPP decreased from 18.019 to 9.261 gC/(m2·month),and the average variation of NNP increased from 0.293 to 3.389 gC/(m2·month).With the increase of mining activity,ecological loss increased gradually;the variation of NPP in the ecological damage area was from 2.752 to 4.752 gC/(m2·month).The variation of NPP in the ecological influencing area was from 0.152 to 0.352 gC/(m2·month).The average variation in the ecological damage area was greater than the ecological influencing area;there is a significantly positive correlation between NPP reduction and mining capacity.NPP begins to decrease in the construction period of mine,and NPP reduces markedly in the high stable production period of mining,and subsequently NPP has an increasing trend during the decay period of mining,and the mining eco-environment developes to the bright side.