Mountain ecosystems play an essential role in supporting regional sustainable development and improving local ecological environments. However, economic development in mountainous areas has long been lagging, and mult...Mountain ecosystems play an essential role in supporting regional sustainable development and improving local ecological environments. However, economic development in mountainous areas has long been lagging, and multiple conflicts related to resource assurance, ecological protection, and economic development have emerged. An accurate grasp of the current status and evolutionary trends of mountain ecosystems is essential to enhance the overall benefits of ecosystem services and maintain regional ecological security. Based on the In VEST(Integrated Valuation of Ecosystem Services and Trade-offs) model, this study analyzed the spatiotemporal evolution patterns and the trade-offs and synergies among ecosystem services(ES) in the Dabie Mountains Area(DMA) of eastern China. The Markov-PLUS(Patch-generating Land Use Simulation) model was used to conduct a multi-scenario simulation of the area's future development. Water yield(WY) and soil conservation(SC) had overall increasing trends during 2000-2020, carbon storage(CS)decreased overall but slowed with time, and habitat quality(HQ) increased and then decreased. The ecological protection scenario is the best scenario for improving ES in the DMA by 2030;compared to 2020, the total WY would decrease by 3.77 × 10^(8) m^(3), SC would increase by 0.65 × 10^(6) t, CS would increase by 1.33 × 10^(6) t, and HQ would increase by 0.06%. The comprehensive development scenario is the second-most effective scenario for ecological improvement, while the natural development scenario did not have a significant effect. However, as the comprehensive development scenario considers both environmental protection and economic development, which are both vital for the sustainable development of the mountainous areas, this scenario is considered the most suitable path for future development. There are trade-offs between WY, CS, and HQ, while there are synergies between SC, CS, and HQ. Spatially, the DMA's central core district is the main strong synergistic area, the marginal zone is the weak synergistic area, and trade-offs are mainly distributed in the transition zone.展开更多
流域岩石风化是重要的碳源/汇过程,也是全球碳循环中的重要环节。外源酸参与流域岩石风化,影响碳元素的地球化学循环和流域碳源/汇效应。漾弓江属长江上游金沙江水系,流域岩石风化过程和碳汇效应尚不清楚。在2023年旱季和雨季分别采集...流域岩石风化是重要的碳源/汇过程,也是全球碳循环中的重要环节。外源酸参与流域岩石风化,影响碳元素的地球化学循环和流域碳源/汇效应。漾弓江属长江上游金沙江水系,流域岩石风化过程和碳汇效应尚不清楚。在2023年旱季和雨季分别采集了漾弓江的干流和主要支流的水样品(地表水点9个、地下水点6个),对主要离子浓度进行检测,并利用水化学平衡法和Galy估算模型分析该流域的岩风化类型,估算了碳酸与硫酸共同作用下的岩石风化CO_(2)消耗量。结果表明:(1)漾弓江流域水系离子成分主要源于硅酸盐岩和碳酸盐岩风化,水化学类型为HCO_(3)-Ca型或HCO_(3)-Ca·Mg型。(2)硫酸和碳酸共同参与了漾弓江流域的岩石风化过程。在不考虑硫酸作用时,漾弓江流域岩石风化的大气CO_(2)消耗量为38.35 t CO_(2)·km^(−2)·a^(−1),而当考虑了硫酸参与时,岩石风化碳汇量降至25.54 t CO_(2)·km^(−2)·a^(−1),扣除约33%,大大提高了计算精度。(3)漾弓江流域岩石风化的大气CO_(2)消耗量为4.27×10^(4) t CO_(2)·a^(−1),是一个碳汇过程。硫酸参与流域岩石的风化改变了区域碳循环,这是全球碳循环模型不可忽略重要环节。展开更多
基金Under the auspices of National Natural Science Foundation of China (No. U2102209)。
文摘Mountain ecosystems play an essential role in supporting regional sustainable development and improving local ecological environments. However, economic development in mountainous areas has long been lagging, and multiple conflicts related to resource assurance, ecological protection, and economic development have emerged. An accurate grasp of the current status and evolutionary trends of mountain ecosystems is essential to enhance the overall benefits of ecosystem services and maintain regional ecological security. Based on the In VEST(Integrated Valuation of Ecosystem Services and Trade-offs) model, this study analyzed the spatiotemporal evolution patterns and the trade-offs and synergies among ecosystem services(ES) in the Dabie Mountains Area(DMA) of eastern China. The Markov-PLUS(Patch-generating Land Use Simulation) model was used to conduct a multi-scenario simulation of the area's future development. Water yield(WY) and soil conservation(SC) had overall increasing trends during 2000-2020, carbon storage(CS)decreased overall but slowed with time, and habitat quality(HQ) increased and then decreased. The ecological protection scenario is the best scenario for improving ES in the DMA by 2030;compared to 2020, the total WY would decrease by 3.77 × 10^(8) m^(3), SC would increase by 0.65 × 10^(6) t, CS would increase by 1.33 × 10^(6) t, and HQ would increase by 0.06%. The comprehensive development scenario is the second-most effective scenario for ecological improvement, while the natural development scenario did not have a significant effect. However, as the comprehensive development scenario considers both environmental protection and economic development, which are both vital for the sustainable development of the mountainous areas, this scenario is considered the most suitable path for future development. There are trade-offs between WY, CS, and HQ, while there are synergies between SC, CS, and HQ. Spatially, the DMA's central core district is the main strong synergistic area, the marginal zone is the weak synergistic area, and trade-offs are mainly distributed in the transition zone.
文摘流域岩石风化是重要的碳源/汇过程,也是全球碳循环中的重要环节。外源酸参与流域岩石风化,影响碳元素的地球化学循环和流域碳源/汇效应。漾弓江属长江上游金沙江水系,流域岩石风化过程和碳汇效应尚不清楚。在2023年旱季和雨季分别采集了漾弓江的干流和主要支流的水样品(地表水点9个、地下水点6个),对主要离子浓度进行检测,并利用水化学平衡法和Galy估算模型分析该流域的岩风化类型,估算了碳酸与硫酸共同作用下的岩石风化CO_(2)消耗量。结果表明:(1)漾弓江流域水系离子成分主要源于硅酸盐岩和碳酸盐岩风化,水化学类型为HCO_(3)-Ca型或HCO_(3)-Ca·Mg型。(2)硫酸和碳酸共同参与了漾弓江流域的岩石风化过程。在不考虑硫酸作用时,漾弓江流域岩石风化的大气CO_(2)消耗量为38.35 t CO_(2)·km^(−2)·a^(−1),而当考虑了硫酸参与时,岩石风化碳汇量降至25.54 t CO_(2)·km^(−2)·a^(−1),扣除约33%,大大提高了计算精度。(3)漾弓江流域岩石风化的大气CO_(2)消耗量为4.27×10^(4) t CO_(2)·a^(−1),是一个碳汇过程。硫酸参与流域岩石的风化改变了区域碳循环,这是全球碳循环模型不可忽略重要环节。
