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Three of the eleven papers focused on groundwater recharge and its impacts on the groundwater regime, in which recharge was caused by riverbed leakage from river ecological restoration (artificial water replenishment). The issues of the hydrogeological parameters involved (such as the influence radius) were also reconsidered. Six papers focused on the impact of river ecological replenishment and other human activities on river and watershed ecology, and on groundwater quality and use function. The issues of ecological security at the watershed scale and deterioration of groundwater quality were of particular concern. Two papers focused on water resources carrying capacity and water resources reallocation at the regional scale, in the context of the fact that ecological water demand has been a significant topic of concern. The use of unconventional water resources such as brackish water has been emphasized in the research in this issue.

influence radius --- Dupuit --- Thiem --- groundwater flow system --- sustainable development --- hydrogeochemistry --- ionic ratios --- factor analysis --- inverse modeling --- Yangtze River --- water resources carrying capacity --- uncertainty analysis --- fuzzy comprehensive evaluation model --- weight sensitivity analysis --- Yongding River --- groundwater numerical simulation --- artificial ecological water supplement --- groundwater recharge resources amount evaluation --- alga control --- typical biological chain --- Ecopath model --- ecological restoration --- Lianshi Lake --- Songnen Plain --- groundwater --- fluorine --- distribution --- formation --- human health risk --- groundwater quality --- groundwater hydrochemistry --- drinking suitability --- irrigation suitability --- health risk assessment --- watershed ecological security assessment --- DPSIR model framework --- environmental management --- water allocation --- brackish water --- general algebraic modeling system --- water diversion project --- numerical simulation --- MODFLOW --- n/a

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Interpreting accruals as working capital investment, we hypothesize that firms rationally adjust their investment to respond to discount rate changes. Consistent with the optimal investment hypothesis, we document that (i) the predictive power of accruals for future stock returns increases with the covariations of accruals with past and current stock returns, and (ii) adding investment- based factors into standard factor regressions substantially reduces the magnitude of the accrual anomaly. High accrual firms also have similar corporate governance and entrenchment indexes as low accrual firms. This evidence suggests that the accrual anomaly is more likely to be driven by optimal investment than by investor overreaction to excessive growth or over-investment.

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