论文部分内容阅读
应用遥感技术结合样地调查的方法,估算马鞍山市城市森林斑块的储碳及其分布的格局,研究区面积为340 km2。结果表明,城市森林生物量与从LandSAT5 TM(2010年7月)图像中提取归一化植被指数(NDVI)之间有很好的相关性,可用回归方程y=123.02x1.076 1来描述,同时分别建立了不同类型城市森林生物量与NDVI的关系,应用这些方程计算得出研究区中11 477.07 hm2的城市森林斑块的生物量计5.748×105t,碳储量2.874×105t;其中郊区水源涵养林和建成区市郊风景林总储碳1.496×105t,占全部储碳的52.0%;城市公园的树林储碳2.567×103t,占0.9%;行道树储碳3.530×103t,占1.2%;其他类储碳量1.317×105t,占45.8%。另外,从马鞍山市的NDVI分布推导出生物量的分布特点。
Using remote sensing technology and sample survey methods, the carbon storage and distribution pattern of urban forest patches in Ma’anshan City was estimated. The study area is 340 km2. The results show that there is a good correlation between urban forest biomass and the normalized NDVI extracted from LandSAT5 TM (July 2010) images and can be described by the regression equation y = 123.02x1.076 1, At the same time, the relationship between forest biomass and NDVI in different types of cities was established respectively. Calculated using these equations, the biomass of urban forest patches of 11 477.07 hm2 in the study area was 5.748 × 105t and the carbon storage was 2.874 × 105t. The total forestry carbon storage in Linhe built-up area was 1.496 × 105t, accounting for 52.0% of the total. Carbon storage in city parks was 2.567 × 103t, accounting for 0.9%; that of roadside trees was 3.530 × 103t, accounting for 1.2% of the total; Carbon content of 1.317 × 105t, accounting for 45.8%. In addition, the distribution of biomass was deduced from the NDVI distribution in Ma’anshan.