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Table 2 Correlations among socioeconomic indices of each region in 2017 and the numbers of filter freshwater ecological restoration publications

From: General trends in freshwater ecological restoration practice in China over the past two decades: the driving factors and the evaluation of restoration outcome

Correlation coefficientGDPWater resourceWastewater dischargeWater pollution control investmentFER publication number
Population (× 106)0.972***0.4050.996***0.819*0.902*
GDP (× 109 RMB) 0.1970.979***0.923**0.968***
Water resource (× 109 m3)  0.360− 0.0680.098
Wastewater discharge (× 106 m3)   0.845*0.924**
Water pollution control investment (× 109 RMB)    0.977***
  1. *indicates P < 0.05, **indicates P < 0.01, ***indicates P < 0.001