大庆地区植被和土壤碳氮储量的估算

利用1978年MSS多光谱数据、2008年中国资源卫星数据和全国第二次土壤普查数据,对黑龙江省土壤退化典型地区大庆地区的植被和土壤碳氮储量进行了估算。结果表明:大庆地区的植被平均碳密度1978年为0.58kg/m2,2008年为0.67kg/m3;土壤平均碳氮密度分别为(9.26±1.73)kg/m3和(0.62±0.17)kg/m3,土地覆被平均土壤碳氮密度分别为(8.10±2.34)kg/m3和(0.50±0.11)kg/m3。1978和2001年植被碳储量分别为(9.38×106)t和(10.40×106)t,30年间植被碳储量增加了(1.02×106)t;全区土壤总碳量为(187.18±34.95)×106t,总氮量为(125.84±33.66)×105t;全区土地覆被土壤总碳量为(163.68±47.34)×106t,总氮量为(102.00±22.55)×105t。大庆地区的植被和土壤平均碳密度都低于中国的平均水平。

Estimating on Vegetation and Soil Carbon/Nitrogen Storages in Daqing Region

Using the MSS multi-spectral data in 1978, Chinese resources satellite data in 2008 and the second soil general survey data, estimated on vegetation and soil carbon/nitrogen storages in Daqing-typical soil degradation region in Heilongjiang. The results showed that average vegetation carbon densities were 0.58 kg/m~2 in 1978 and 0.67 kg/m~2 in 2008 in Daqing, average soil carbon and nitrogen densities were (9.26±1.73)kg/m~3 and (0.62±0. 17)kg/m~3, respectively. Average land cover soil carbon and nitrogen densities were (8.10±2.34)kg/m~3 and (0.50±0.11)kg/m~3, respectively. Vegetation carbon storages were (9.38×106)t in 1978 and (10.40 ×10~6) t in 2008, vegetation carbon storages increased (1.02 × 106)t in 30 years period. Total soil carbon and nitrogen storages were (187.18±34.95) × 106 t and (125.84±33.66) × 10~5 t, respectively. Total land cover soil carbon and nitrogen storages were (163.68±47.34)×10~6 t and (102.00±22. 55)× 10~5 t, respectively. Daqing's average vegetation and soil carbon densities were lower than China's average levels.