不同气候区生态系统服务权衡空间异质性及其驱动因素——以川滇-黄土高原生态屏障带为例

厘清生态系统服务权衡关系的驱动因素对实现生态系统高效管理至关重要。然而，在不同气候区生态系统服务权衡关系在空间上如何变化及其驱动机制是否一致，尚不清楚。以川滇-黄土高原生态屏障带为例，基于InVEST模型、CASA模型评估生态系统服务空间分布特征，采用RMSE量化生态系统服务权衡关系，利用地理探测器探究不同气候区生态系统服务权衡的驱动机制，以期为生态系统管理提供参考依据。结果如下：(1)不同生态系统服务在不同气候区存在明显差异，WY整体由东北向西南呈递减趋势，NPP和SC呈现由北向南递减的趋势。(2)WY∩NPP的权衡最高值在中温带为0.317,最低值在高原气候区为0.181。WY∩SC在不同气候区RMSE变化幅度较小，由南向北呈现递减趋势；中亚热带气候区WY∩SC的权衡程度最高，为0.295,南温带的权衡程度最低，为0.229。NPP∩SC的RMSE差值最小，仅有0.064,高原气候区权衡程度略低于温带和亚热带。(3)在不同气候区自然因素对权衡关系作用显著高于社会因素，但在人口密集区，人为活动可以部分突破自然因素的约束，使其对权衡的影响有所提升。因此，在制定不同气候区生态系统服务管理...

Spatial heterogeneity of ecosystem service trade-offs in different climatic regions and its driving factors: A case study of the Sichuan-Yunnan-Loess Plateau ecological barrier zone

Clarifying the driving factors of trade-offs in ecosystem services (ESs) is crucial for promoting effective ecosystem management. However, it is unclear whether the trade-offs of ESs are spatially static in different climate zones and whether their driving mechanisms are consistent. In this study, taking the Sichuan-Yunnan-Loess Plateau Ecological Barrier Zone (SYPEBZ) as an example, the InVEST model and CASA model were used to evaluate ESs including water yield (WY), soil conservation (SC), and net primary productivity (NPP). RMSE was used to quantify ESs trade-offs and geographic detectors were used to analyze the trade-offs of different climatic zones and their driving factors. In order to provide a reference for ecosystem management. The results are as follows:(1) Different ESs differed significantly in different climate zones. The WY decreased from northeast to southwest, and the NPP and SC decreased from north to south of the study area. (2) The highest value of the trade-off between WY and NPP was 0.317 in the temperate zone and the lowest value was 0.181 in the plateau climate zone. The RMSE of WY and SC in different climatic regions changed slightly, showing a decreasing trend from south to north. The trade-off between WY and SC was the highest (0.295) in the mid-subtropical climate zone, and the lowest in the southern temperate zone (0.229). The RMSE difference between NPP and SC was the smallest with only 0.064, and the trade-off degree of plateau climate zone was slightly lower than that of temperate and subtropical zones. (3) In different climatic zones, natural factors generally drive trade-offs more than social factors, But in densely populated areas human activities could partially break through the constraints of natural factors and increase their impact on trade-offs. Therefore, when formulating targeted measures for ESs management in different climate zones, the spatial characteristics of ESs trade-offs and the differences in driving factors should be considered.