论文部分内容阅读
以福建省长汀县河田地区为研究区,在野外样方生物量调查和典型植被光谱测定基础上,对比分析SPOT5影像8种植被指数与马尾松林(Pinus massoniana)碳储量关系,估算区域尺度马尾松林碳储量。结果表明,马尾松林冠层与林下植被芒萁(Dicranopteris dichotoma)在短波红外波段(SWIR)反射率区分明显。加入SWIR的修正的归一化植被指数(MNDVI)与森林碳储量回归决定系数最高,并有较小的均方根误差,同时可减少林下植被覆盖对马尾松林碳储量估算影响。生态恢复驱动下研究区平均碳储量增加到30.37 t/hm2。
Taking the Hetian area of Changting County, Fujian Province as a study area, the relationship between eight vegetation indices of SPOT5 images and carbon storage of Pinus massoniana was analyzed based on field sampling and typical vegetation spectra. Pine forest carbon storage. The results showed that the reflectance of the canopy layer of Masson pine and Dicranopteris dichotoma in the shortwave infrared band (SWIR) was distinct. The modified Normalized Vegetation Index (MNDVI) and forest carbon storage regression coefficients of SWIR affiliation to SWIR have the highest coefficient of variance with small root mean square error and can reduce the impact of understory vegetation cover on estimating carbon stocks in Pinus massoniana forest. The average carbon storage in the study area driven by ecological restoration increased to 30.37 t / hm2.