Fig. 4
From: Coupling process of carbon sink service flow based on metacoupling framework

Inflow plot of intracoupling of water subsystem. (a) Hierarchical distribution of CSSFs in 2000. (b) Hierarchical distribution of CSSFs in 2010. (c) Hierarchical distribution of CSSFs in 2020. (d) CSSF inflow values in 2000. (e) CSSF inflow values in 2010. (f) CSSF inflow values in 2020.