黑龙江省碳储量时空变化研究

Research on the Temporal and Spatial Changes of Carbon Storage in Heilongjiang Province

基于土地利用数据,采用InVEST模型评估黑龙江省2000年、2010年、2020年的碳储量时空变化并通过冷热点分析得出了碳储量高值和低值的集聚情况,结果表明:(1) 2000年、2010年、2020年碳储量总量分别为8172818887.12 t、8024504037.23 t、8143563256.06 t,碳储量先减少后增加。(2) 耕地、林地的碳储量值最大,2000年、2010年、2020年耕地和林地的碳储量之和占总碳储量的比例依次为91.6%、90.4%、91.3%,黑河市、大兴安岭地区碳储量值较高,而鹤岗市、大庆市碳储量值较低。(3) 选择县域为研究尺度进行冷热点分析,从整体上看牡丹江市、伊春市为显著热点区域;大庆市为显著冷点区域。Based on land use data, InVEST model was used to evaluate the spatio-temporal changes of carbon storage in 2000, 2010 and 2020 in Heilongjiang Province, and the concentration of high and low carbon storage was obtained through cold and hot spot analysis. The results showed that: (1) The total carbon storage in 2000, 2010, and 2020 were 8172818887.12 tons, 8024504037.23 tons, and 8143563256.06 tons, respectively. The carbon storage decreased first and then increased. (2) The carbon storage values of cultivated land and forest land are the highest. In 2000, 2010, and 2020, the sum of carbon storage of cultivated land and forest land accounted for 91.6%, 90.4%, and 91.3% of the total carbon storage, respectively. The carbon storage values in Heihe City and Daxing’anling area are higher, while those in Hegang City and Daqing City are lower. (3) Selecting counties as the research scale for cold and hot spot analysis, Mudanjiang City and Yichun City are significant hot spot areas as a whole;Daqing City is a significant cold spot area.