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Evaluation of farmers’ willingness to participate (WTPP) and willingness to pay (WTP) for the centralized mode provision (CMP) of rural domestic sewage treatment (RDST) is imperative to improve the rural environment as well as to alleviate government financial pressures. This study adopted the contingent valuation method as well as face-to-face interview questionnaires to assess rural residents’ provision mode preferences, WTPP, and WTP for the CMP of RDST in China. Based on 761 samples collected from Shandong, Jilin, and Gansu provinces of China, we applied econometric models to estimate farmers’ WTPP and WTP for the CMP of RDST and explore the potential influencing factors, respectively. Results show that 1) 81.87% of the farmers would be willing to contribute to CMP of RDST; 2) farmers’ perceptions of the necessity of RDST, pollution of rural domestic sewage, and government propaganda significantly and positively affect their WTP; and 3) the expected WTP for CMP of RDST with the total respondents and the respondents with positive WTPP were estimated to be 7.59 USD/year and 10.10 USD/year (for a total of 20 years), accounting for 16.28 and 21.65% of construction costs, respectively. Based on these outcomes, it could be further estimated that the aggregate value was between 179.05 million USD/year and 238.26 million USD/year which implied that the farmers’ WTP may be a potentially non-negligible funding source for the CMP of RDST. The enhancement of environmental awareness of farmers and strengthening of propaganda should be the next priority of the Chinese government. Priority should also be assigned to villages closer to towns when the government formulates relevant strategies and policies. The results of this study provide references for policy formulation related to broadening the funding sources in RDST and exploring farmer payment mechanisms and implications for other developing countries.

In China, returning wheat straw to the field (RWSF) is the most popular way of utilizing wheat straw. RWSF can not only improve soil quality, but also help to control agricultural pollution from wheat straw burning. However, the increased production cost caused by RWSF reduces farmers' enthusiasm to adopt this approach. This study estimated farmers' willingness to accept compensation (WTA) for RWSF by using the contingent valuation method (CVM), and identified determinants that influence farmers' WTA by using an ordered choice model (OCM). It aimed to determine how much compensation should be given to farmers for encouraging them to adopt RWSF and which factors affect their WTA. The results showed that, currently, the increased cost caused by adopting RWSF was 743 RMB/ha, and which was fully burdened by farmers. Although more than 90% of the surveyed farmers adopted RWSF, only 3.8% of these farmers were willing to adopt RWSF voluntarily without any compensation. The farmers' WTA of adopting RWSF was 479 RMB/ha, and it was much higher than the current subsidy rate of 300 RMB/ha in Jiangsu, which could not effectively encourage farmers to adopt RWSF voluntarily. Farmers' WTA is not only positively affected by the increasing production cost caused by RWSF and negatively influenced by the benefits resulting from RWSF, but also restricted by social-economic characteristics such as age, education, income etc. It is costly for the Chinese government to subsidize all the farmers adopting RWSF, letting farmers to become aware of the long-term environmental value of RWSF is an effective measure to motivate them to protect environment responsibly by adopting RWSF. These findings are useful in improving the current provincial subsidy policies or designing new subsidy policies nationwide for RWSF, and helpful in encouraging famers more sustainably adopting RWSF and promoting cleaner wheat production.

Urban air pollution generated from straw open burning after the harvest seasons in China has been one of the significant problems interfering with the city's proper functioning. This paper applied contingent valuation in a face to face survey to assess the individual willingness of urban residents in Henan, China to pay for corn straw burning ban to policy makers. Such assessments are important for policy makers to determine the investment and policy instruments for regulating environmental impacts of straw open burning. To investigate the determinants of the stated willingness to pay (WtP) a sample of 1890 urban residents in Henan, China was selected. The study used Tobit model. About 62% of respondents stated that they were willing to pay. The expected WtP was about 76.72 Chinese Yuan (RMB) per person per year for the total respondents and 142.70 RMB per person per year for observations with positive WtP bids. Aggregate value was between 3.41 and 3.90 billion RMB indicating that corn straw burning ban is of considerable economic value to Henan. Results from the study show that the experience of environmental protection, expenditure on protecting health from air pollution, influence of straw burning on respondent's health, life, work, household income, education, job place, and family size were significant variables explaining WtP. The results of the study will be useful for policy makers when making up their mind how much funds should be invested and what kinds of policy instruments could be suitable for banning straw burning. (C) 2018 Published by Elsevier Ltd.

Environmental impacts of milk production are depending on the production efficiency of livestock and cropland. A mode of integrated maize silage planting and dairy breeding system (IPBS) has been widely promoted in China, as a promising way to recycle manure, reduce chemical fertilizer consumption and improve soil quality. However, quantitative environmental impacts and mitigation potential of this system remains unclear. In this study, based on life cycle assessment (LCA), environmental performance of non-IPBS and IPBS were compared: non-IPBS only involved dairy cow breeding, whereas maize silage planting was incorporated in IPBS. Results indicated that, although 60% of the surveyed dairy farms adopted IPBS, the self-sufficiency rate of maize silage was 57%. Compared with non-IPBS, IPBS had apparent potential in reducing global warming potential (−14%), acidification potential (−10%), eutrophication potential (−18%), non-renewable energy use (−10%), water use (−8%) and land use (−13%). It is estimated that, in China, 81% of dairy farms could adopt IPBS, resulting in a reduction of approximately 21% in greenhouse gas (GHG) emissions to compared with current situation, but the premise is that 2.0 million ha cropland should be applied for maize silage cultivation. Interestingly, environmental performance of IPBS was affected by the self-sufficiency rate of maize silage and restricted by milk yield and maize silage yield. Thus, mitigation of environmental impacts of milk production could be realized by combining a short-term strategy of increasing maize silage planting area in dairy farms and a long-term plan for technological improvements in the yield of crop and milk.

This study investigated smallholder farmers' adoption preferences for cropping patterns of cover crops, duration of adoption, and supplementing technical support to reduce agrochemicals regarding sustainable farm management (SFM). A discrete choice experiment was conducted in the Hexi Corridor (D1) and the west Loess Plateau (D2) in northwest China. The results show that farmers in D1 preferred intercropping and rotating cover crops to the current single cropping system, while farmers in D2 prioritized intercropping over rotation and least preferred planting cover crops in marginal land in the double-cropping system. Farmers in both sites preferred 1 or 3 years of adoption over 5 years. Additionally, farmers in D2 preferred technical assistance to reduce the high proportion of agrochemicals. The results indicate that younger farmers with higher annual household incomes were most likely to opt out in D1. In D2, more agricultural labor inputs and raising livestock had positive effects on the adoption of the package. Moreover, farmers who cultivated cash crops were more reluctant to move away from the current cropping system. This study highlights the uses of cover crop intercropping and rotation combining with technical assistance in different agriculturally intensive cropping systems that may be useful in guiding site-specific policy.

For the sake of reducing the application of chemical fertilizers (CF) and achieve the goal of Zero Growth of CF until 2020, Chinese government released the “Action Plan for Organic-Substitute-Chemical-Fertilizer (OSCF) for Fruits, Vegetables and Tea” and initially performed it in 100 pilot counties from 2017. Each pilot county rewarded 10 million CNY as subsidy to substitute CF with organic fertilizers (OF). This study examines the effects of the OSCF policy using survey data of 281 greenhouse vegetable farmers in the Shandong province of China. The Difference-in-Difference (DID) method is employed to get the net effects of the policy on the utilization of replacing CF. The results show that the OSCF policy helps to significantly reduce the application of CF and increase OF’s utilization for vegetable farmers, and on average CF drops 111.5 kg/ha while OF increases 346.36 kg/ha for the sampling farmers. Additional analysis reveals that the effects of the policy are heterogeneous across the cost of CF and household-level characteristics. The results provide evidences for further enhancing the policy effects.

A preliminary conceptual framework is proposed for the estimation of the costs of desertification. This framework consists of assessment of the extent and severity of desertification, identification of various impacts and valuation of the direct and indirect costs of desertification. Based on this framework, three well-cited studies of the costs of desertification in China were critically reviewed. Limitations in these studies include double counting, confusion of short-term and long-term costs and the lack of necessary adjustment of price parameters. Refinement of the estimates indicates that these limitations have caused serious overestimation or underestimation of the costs of desertification. To achieve more reliable and useful estimates, future studies need to overcome the limitations mentioned in the preceding texts and use the latest available data on desertification and its various impacts. A more comprehensive conceptual framework that includes the valuation of dryland ecosystem services could also be developed to guide future studies. Copyright © 2016 John Wiley & Sons, Ltd.

The Green Manure Planting Program (GMP), which is a typical case of payment for farmland ecosystem services, has come into play on conserving paddy fields in China. This paper analyses farmers’ willingness to accept (WTA) for adopting GMP by employing the contingent valuation method (CVM) and Double-hurdle (D-H) model on the basis of a sample data set containing information on 1217 farmers in five provinces in southern paddy fields region (SPF) of China. The results show that farmers’ WTA for adopting GMP was 3323 CNY/ha per year, which is much higher than the current compensation standards (com-standards) in the study region. This result explains why the current policy does invalidly stimulate farmers for adopting GMP. Farmers’ WTA is not only influenced by the cost-benefit effect of GMP adoption, but also impacted by their perceived environmental value in improving the quality of paddy fields as well as the demographic and socioeconomic information such as farmers’ age, political identities, income and paddy field area. It is costly if the government compensates all farmers who adopt GMP, letting farmers aware of more environmental value of GMP and maximally promoting the transformation of these environmental values into economic benefits is an effective measure to encourage them to adopt GMP.The results of this study can guide policy makers in determining the budget for GMP compensation and designing systematic compensation mechanism hence improve the sustainability of paddy fields conservation.