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利用1978年MSS多光谱数据、2008年中国资源卫星数据和野外实验数据,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0.58 kgm-2,2008年为0.67 kgm-2;土壤平均碳氮密度分别为(8.18±1.65)kgm-3和(0.37±0.11)kgm-3,土地覆被平均土壤碳氮密度分别为(7.53±2.16)kgm-3和(0.33±0.16)kgm-3。1978和2008年植被碳储量分别为9.38×106 t和1.04×107 t,30年期间植被碳储量增加了1.02×106 t;全区土壤总碳量为(1.65±0.33)×108 t,总氮量为(7.55±2.15)×106 t;全区土地覆被土壤总碳量为(1.52±0.44)×108 t,总氮量为(6.74±3.32)×106t。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,应加强土地保护,防止土壤的进一步退化。
Based on the MSS multispectral data in 1978, China Resources satellite data in 2008 and the field experiment data, the vegetation and soil carbon and nitrogen reserves in Daqing area, a typical area of soil degradation in Heilongjiang Province, were estimated. The results showed that the average carbon density in Daqing area was 0.58 kgm-2 in 1978 and 0.67 kgm-2 in 2008, and the average soil C-N density was (8.18 ± 1.65) kgm-3 and (0.37 ± 0.11) kgm-3 (7.53 ± 2.16) kgm-3 and (0.33 ± 0.16) kgm-3.1978, respectively, and the vegetation carbon storage in 2008 was 9.38 × 106 t and 1.04 × 107 t, respectively, in 30 years During the period, total carbon in the soil increased by 1.02 × 106 t. The total soil carbon in the whole area was (1.65 ± 0.33) × 108 t and the total nitrogen content was (7.55 ± 2.15) × 106 t. (1.52 ± 0.44) × 108 t and total nitrogen (6.74 ± 3.32) × 106 t. The average density of vegetation and soil in Daqing is lower than the average level in China. Land protection should be strengthened to prevent further soil degradation.