RESUMO: Com a redução de transferências temporais intergeracionais, as transferências financeiras da prole adulta a seus pais idosos estão prevalecendo em China rural. Embora muito tenha sido feito, pouco se sabe sobre a associação entre a expansão das transferências intergeracionais e a saúde física dos idosos rurais na China. O objetivo deste artigo é examinar o efeito das transferências financeiras intergeracionais sobre a saúde física dos anciãos na China rural. Usando dados coletados do estudo longitudinal de saúde e aposentadoria da China (CHARLS), o modelo de efeito fixo de dados do painel e o modelo de limiar são empregados para estimar o impacto das transferências financeiras intergeracionais na saúde física dos idosos em áreas rurais. Os resultados mostram que, embora as transferências financeiras intergeracionais tenham um efeito positivo na saúde física dos idosos, não existe relação linear entre eles. As transferências financeiras intergeracionais são claramente menos eficazes para a saúde física de idosos de baixa renda do que as de renda média, enquanto o efeito sobre a saúde de idosos de alta renda é o mais insignificante. Os estudos sobre o efeito das transferências financeiras intergeracionais sobre a saúde dos anciãos nos países em desenvolvimento permanecem limitados. Os achados deste artigo fornecem grandes insights sobre como as transferências intergeracionais, e as transferências financeiras intergeracionais podem afetar o bem-estar de idosos residentes em áreas rurais. Além disso, este estudo pode oferecer inspiração para os decisores políticos sobre as medidas que devem tomar para melhorar o bem-estar dos residentes rurais.

ABSTRACT: With the reduction of intergenerational temporal transfers, financial transfers from adult offspring to their elderly parents are prevailing in rural China. Although much has been done, little is known about the association between the expansion of intergenerational transfers and rural old people’s physical health in China. The purpose of this paper was to examine the effect of intergenerational financial transfers on the elders’ physical health in rural China. Using data collected from China Health and Retirement Longitudinal Study (CHARLS), panel data fixed effect model and threshold model are employed to estimate the impact of intergenerational financial transfers on the old people’s physical health in rural areas. Results showed that; although, the intergenerational financial transfers have a positive effect on the old people’s physical health, no linear relationship exists between them. Intergenerational financial transfers are clearly less effective for low-income old people’s physical health than those of middle-income, while the effect on high-income old people’s health is the most insignificant. Studies concerning the effect of intergenerational financial transfers on the elders’ health in developing countries remain limited. Findings of this paper provided great insights into how intergenerational transfers, such as intergenerational financial transfers, may affect the well-beings of old residents in rural areas. Additionally, this study can offer inspiration to policy makers regarding what measures they should take to enhance rural old residents’ well-beings.

RESUMO: O estudo dos fatores e intervenções de saúde mental na China rural tem um significado prático importante para promover o desenvolvimento pessoal e o progresso social. Usando dados de 2016 provenientes do China Family Panel Studies (CFPS), este artigo estudou o efeito do “aperto do casamento” de um filho adulto, na saúde mental dos pais, na zona rural da China e seus mecanismos correspondentes. O termo aperto do casamento refere-se a um desequilíbrio entre o número de homens e mulheres disponíveis para se casar em uma determinada sociedade. Nesse estudo evidencia-se uma associação significativamente negativa entre o “aperto no casamento” do filho adulto e o estado de saúde mental dos pais rurais. Além disso, a associação negativa do “aperto do casamento” de um filho adulto com a saúde mental é maior para mães, pais com menos de 60 anos e pais que vivem com filhos. Além disso, investigamos possíveis efeitos, incluindo apoio intergeracional, relacionamento intergeracional e relacionamento de vizinhança, e descobrimos que o aperto do casamento do filho adulto prejudica principalmente a saúde mental dos pais rurais, aumentando o apoio intergeracional e piorando relações intergeracionais e de vizinhança.

ABSTRACT: Studying the influencing factors and interventions of mental health in rural China has important practical significance for promoting personal development and social progress. Using the 2016 waves of the China Family Panel Studies data, this paper examined the effect of adult sons’ marriage squeeze on parents’ mental health in rural China and its corresponding mechanisms. Our study showed a significant negative association between adult sons’ marriage squeeze and the mental health status of rural parents. Moreover, the negative association of adult sons’ marriage squeeze with mental health is larger for female parents, parents who are less than 60 years old and parents living with children. In addition, we investigated possible mechanisms of the effect, including intergenerational support, intergenerational relationship and neighborhood relationship, and that adult sons’ marriage squeeze mainly damages the mental health of rural parents by increasing the downstream intergenerational support of rural parents and worsening intergenerational and neighborhood relationships.

In this study, a bivariable coupling model for river channel routing is presented. The proposed model is developed from the Priessmann 4-point implicit differential scheme with a weight coefficient of river flow continuity equation. It is based on the transformation of two different expression forms of river channel storage equation. Furthermore, we consider the impact of lateral inflow along the study river channel from another perspective. In this paper we deduct lateral inflow from the lower section instead of adding lateral inflow to the upper section. In order to be representative of geographical range, river channel characteristics, flood magnitude, hydraulic characteristics and time, the proposed model is tested in 38 river channels of 6 river systems in China by using observed data during flood season. The rationality of model structure and the validity of model simulation are examined comprehensively. Comparison between the proposed model and Muskingum model shows that the proposed model can improve the simulation accuracy. The results show that the simulation accuracy and stability of the bivariable coupling model is much better than that of the Muskingum model.

Conceptual rainfall-runoff models have become a basic tool for evaluating effects of land use/cover changes on the hydrologic processes in small-scale as well as large watersheds. The runoff-producing mechanism is influenced by land use/cover changes. In this study, we analysed the effect of land use change on hydrological model parameters by calibrating the model parameters of different time periods with different land use via a linearized calibration method. The parameter calibration of a conceptual model usually involves the construction of objective function and optimization methods for good performance of observed data. However, the objective function of the minimum-sum-squared error will introduce an unrelated optimum solution for the parameter calibration problem of a conceptual model, which belongs to a highly complex nonlinear system. Thus, a linearized parameter calibration method, which searches for the optimal value on a parameter surface, is presented, based on the analysis of the problems of the objective function of the minimum-sum-squared error. Firstly, an ideal model is shown that illustrates the efficiency and applicability of this method. Secondly, the novel method is demonstrated for solving the Xinanjiang daily model parameter calibration. Finally, 50 years of data are divided into 4 different periods for parameter comparison, through which the effects of land use/cover changes on runoff in Dapoling watershed are evaluated. The results show that the linearized parameter calibration method is convergent, reasonable and effective. For example, the model parameter of evapotranspiration coefficient KC varied considerably, from 0.658 to 0.922, in response to land use/cover change within the watershed.