Quantifying the Payments for Ecosystem Services among hydrologic units in Zhujiang River Basin, China based on the indicator of Optional Capacity Value

摘要: Abstract Ecosystem services (ES) are fundamental to human being’s livelihoods, production and survival. However, the spatial mismatch between ES supply demand is a common phenomenon. Payments for Services (PES) provide way promote complementary advantages benefits equilibrium supplier beneficiary. At present, PES mainly based on tradeoff profit loss of ecological conservation. The quantifying uses opportunity cost follows principle additionality, which neglects that arise from basic (contrast additional) experienced by beneficiary ignores rights interests who supplies ES. To resolve this problem, we proposed should set value as quantitative indicator PES. Here, introduced new (optional capacity value, OCV) implement idea. OCV indicates optional supporting total produced economic social activities provided volume an In paper, calculated water provision in Zhujiang River Basin (Pearl Basin), China. Then, discussed three scenarios PES, principles (1) sharing responsibilities bearing (2) equal pay work. results showed could describe conditions resources hydrologic unit not only itself, but also downstream units, then be This research provides scheme would coordinated development conservation among regions with demand.