Objective The land use change and carbon storage change in the future under different scenarios in the Xiaoxing’an Mountains region of Heilongjiang Province were assessed, in order to optimize ecosystem services and provide scientific reference for the construction of the northern ecological security barrier. Methods Based on land use data from 2000, 2010, and 2020, land use changes in the Xiaoxing’an Mountains region in 2030 were simulated, and carbon storage under three scenarios(natural development, ecological protection, and urban development) was evaluated. Results ① From 2000 to 2020, significant changes occurred in land use patterns in the Xiaoxing’an Mountains region. The areas of forestland and grassland continuously declined, with forestland being particularly affected, primarily converted into cropland. ② Carbon storage in the region was 2.204×109 t in 2000, 2.202×109 t in 2010, and 2.191×109 t in 2020, exhibiting a trend of annual decline. ③ In terms of carbon sequestration, by 2030, the ecological protection scenario offers significant advantages over the natural development scenario, with an estimated increase of 1.933×107 t. This scenario effectively mitigates the decline in carbon storage and provides strong evidence for future policy formulation. Conclusion To maintain the ecological security of the Xiaoxing’an Mountains region, scientific ecological policies should be upheld to enhance carbon sequestration capacity and contribute to the development of a northern ecological security barrier.
文献参数: 杨德文, 高铭阳, 张碧君, 等.基于PLUS-InVEST模型的小兴安岭地区土地利用模拟与碳储量评估[J].水土保持通报,2025,45(3):286-294. Citation:Yang Dewen, Gao Mingyang, Zhang Bijun, et al. Land use simulation and carbon storage assessment in Xiaoxing’an Mountains region based on PLUS-InVEST model [J]. Bulletin of Soil and Water Conservation,2025,45(3):286-294.
将涉及模拟未来土地利用类型的驱动因子数据分为自然环境因素、可达性数据和社会经济数据3个方面,自然环境因素:数字高程及坡度数据来源于地理空间数据云(http:∥www.gscloud.cn/search);土壤类型、NDVI,年平均温度和年平均降水数据来源于国家青藏高原科学数据中心(http:∥data.tpdc.ac.cn/zh-hans/);到河流距离数据来源于OpenStreetMap(https:∥www.openstreetmap.org/)。可达性数据包括:到铁路、快速路、主干道、次干道和城市中心距离数据来源于OpenStreetMap(https:∥www.openstreetmap.org/)。社会经济数据:人口数据来源于Open Spatial Demographic Data and Research(https:∥www.worldpop.org/);GDP数据来源于中国科学院资源与环境科学与数据中心(https:∥www.resdc.cn/)。
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