Land degradation, drought and food security in a less-favoured area in the Ethiopian highlands: a bio-economic model with market imperfections

This paper presents a bio‐economic model of Andit Tid, a severely degraded crop‐livestock farming system with high population density and good market access in the highlands of Ethiopia. Land degradation, population growth, stagnant technology, and drought threaten food security in the area. Drought or weather risk appears to have increased in recent years. The bio‐economic model is used to analyse the combined effects of land degradation, population growth, market imperfections and increased risk of drought on household production, welfare and food security. We find that the indirect effects of drought on household welfare through the impact on crop and livestock prices are larger than the direct production effects of drought. Provision and adoption of credit for fertiliser, although risky in itself, may lead to increased grain production and improved household welfare and food security. Provision of credit may have a negative effect on conservation incentives but this effect may be mitigated by linking a conservation requirement to the provision of credit for fertiliser.     

Food Standards and Welfare: General Equilibrium Effects

We analyse the general equilibrium effects of the growth of high standard food chains on household welfare. To measure structural production changes and welfare effects on rural and urban households, our model has two types of agents, five kinds of products and four types of factors. We calibrate the model using a Chinese dataset. The simulation results show that the effects on poor rural households depend on a variety of factors, including the nature of the shocks leading to the expansion of high standard sector, production technologies, trade effects, spillover effects on low standard markets, factor market constraints and labour market effects.     

Impacts of price and productivity changes on banana‐growing households in Uganda

This article compares the effects of changing market prices and farm productivity on the welfare of banana‐growing households in the Ntungamo district of Uganda. A heterogeneous‐agent model is applied via a series of mathematical optimization problems, to simulate production and consumption responses of 70 farm households surveyed in 2006. Results show that a given increase in productivity has a greater impact on poverty alleviation than that same increase in market prices. Despite the effects of productivity gains being comparable across different types of household groups, price improvements primarily benefit the incomes of households who are involved in rural producer organizations, who are located closer to markets, and who sell at the market.     

中国农户土地租佃行为实证研究

本文利用福建省和黑龙江省的农户调查样本数据，通过建立土地租佃行为的经济计量模型，从微观层面定量分析了影响农户土地租佃行为的各种因素。计量结果表明，农户土地租佃行为受到户主年龄、户主是否接受过专业技术培训、家庭劳动力人数、人均纯收入、非农收入比重、农户是否饲养役畜、交易成本等多方面因素的影响，并随着这些因素的变化而不断变化。     

Smallholder participation in the land rental market in a mountainous region of Southern China: Impact of population aging,land tenure security and ethnicity

Rural land rental markets in China play an increasingly important role in the transformation of the agricultural sector. This study focuses on the rural land rental market in the Xishuangbanna Dai Autonomous Prefecture in Southern China, a mountainous region, where rapid changes in land use have taken place with the transition from traditional agriculture and a tropical rainforest to rubber monoculture. Notably, we assess the impacts of population aging, land tenure security, and ethnicity on the participation of smallholders in the land rental market. The analysis suggests that a higher proportion of older people in a household increases the likelihood of renting out land and reduces the probability of renting in land, implying that population aging fosters land rental market development by transferring land from older to younger farmers. We also confirm that the availability of a land tenure certificate has a significant and positive impact on the renting out of land. Furthermore, ethnic minority groups are less likely to rent out land, indicating that land rental markets are ethnic sensitive. Additionally, specialization in rubber farming, household wealth and the altitude of household location also influence participation in the land rental market.     

Rising Food Prices and Household Welfare: Evidence from Brazil in 2008

Food price inflation in Brazil in the 12 months to June 2008 was 18%, whereas overall inflation was 7%. Using spatially disaggregated monthly data on consumer prices and two different household surveys, we estimate the welfare consequences of these food price increases, and their distribution across households. Because Brazil is a large food producer, with a predominantly wage‐earning agricultural labour force, our estimates include general equilibrium effects on market and transfer incomes, as well as the standard estimates of changes in consumer surplus. Although the expenditure (or consumer surplus) effects were large, negative and markedly regressive everywhere, estimates of the market‐income effect were positive and progressive, particularly in rural areas. Because of this effect on the rural poor, and of the partial protection afforded by increases in two large social assistance benefits, the overall impact of higher food prices in Brazil was U‐shaped, with middle‐income groups suffering larger proportional losses than the very poor. Nevertheless, as Brazil is 80% urban, higher food prices still led to a greater incidence and depth of poverty at the national level.     

农村土地流转的供求意愿及其流转效率的评价研究

研究目的:研究农村土地流转的农户供求意愿,定量评价土地流转的经济效率。研究方法:通过设置的土地流转意愿度指标分析农户土地流转的供给意愿,通过农户实际土地经营规模和最适土地经营规模的比较分析农户的需求意愿,利用市场供求模型估算土地流转带来的供求双方农户经济福利。研究结果:中部6省的农户供给意愿在0.18—0.52之间,农户实际土地经营规模为0.27—0.73 hm2/户,最适土地经营规模0.61—1.08 hm2/户,以100—300元/亩流转交易价实行土地流转后,中部6省中各省供给方农户的经济福利可达到1.1—9.2亿元,需求方农户的经济福利可达到2.2—12.2亿元。研究结论:从供给角度看,当前农户的土地流转意愿低;从需求角度看,农户有土地流转的意愿。土地流转交易使土地资源和劳动力资源得到重新配置,增进了土地供给者和土地需求者的福利,提高了经济效率。     

Global market shocks and poverty in Vietnam: the case of rice

World food prices have experienced dramatic increases in recent years. These “shocks” affect food importers and exporters alike. Vietnam is a major exporter of rice, and rice is also a key item in domestic production, employment, and consumption. Accordingly, rice price shocks from the world market have general equilibrium impacts and as such, their implications for household welfare are not known ex ante. In this article, we present a framework for understanding the direct and indirect welfare effects of a global market shock of this kind. We quantify transmission of the shock from global indicator prices to domestic markets. Then we use an applied general equilibrium model to simulate the economic effects of the price changes. A recursive mapping to a nationally representative household living standards survey permits us to identify in detail the ceteris paribus effects of the shock on household incomes and welfare. In this analysis, interregional and intersectoral labor market adjustments emerge as key channels transmitting the effects of global price shocks across sectors and among households.     

Rational But Poor? An Explanation for Rural Economic Livelihood Strategy

Using panel data for six rural sub‐Saharan Africa countries, this article tests two hypotheses: (i) household‐specific staple food price bands resulting from market failures in the presence of liquidity constraints and rainfed agriculture induces rural household specialisation in food crops as an economic livelihood strategy; (ii) specialisation in food crops yields inferior welfare than diversification, and keeps households trapped in poverty. The results lend strong support to both hypotheses, reinforcing the need for public investment in rural infrastructure in order to encourage household livelihood diversification for improved welfare.     

Land rental markets and labor productivity: Evidence from rural China

This study investigates the impact of the land rental market on labor productivity in rural China. Particular attention is given to farm and nonfarm labor productivity. Using 2012 household‐level data and a multinomial endogenous switching treatment regression technique, we find that rural households renting in farmland increased labor productivity in the farm sector by about 55%, whereas labor productivity in the nonfarm sector decreased by about 6%. We also find that rural households renting out farmland had lower labor productivity in both the farm and nonfarm sectors by 13% and 9%, respectively. More family labor transferred from the farm to the nonfarm sector after renting out land.     

Rice Production,Trade and the Poor: Regional Effects of Rice Export Policy on Households in Vietnam

Analysing Vietnam's rice export policy and recent export ban in the context of rising food prices, this study combines insights from a regionally‐disaggregated or ‘bottom‐up’ CGE model and a micro‐simulation using household data. Three main conclusions are drawn. First, although there is little impact on GDP, there are substantial distributional impacts across regions and households from different export policies and market conditions. Second, both rural and urban households, including poor households, benefit from free trade, even though domestic rice prices are higher. Finally, under free trade, relatively large gains accrue to rural households, where poverty is most pervasive in Vietnam.     

Impacts in Uganda of rising global food prices: the role of diversified staples and limited price transmission

This study assesses the potential impact of rising world food prices on the welfare of Ugandan households. While Uganda experienced sharply higher food prices in 2008, as a landlocked, food‐exporting country the causes of those price changes were mainly regional and indirect rather than directly transmitted from global markets. Using trade volumes, food prices, and household survey data we describe how Uganda, unlike some other countries, is partially shielded from direct impacts of global food price movements. Although the majority of Ugandans are net food buyers, the adverse impact at household‐level of rising global prices is moderated by the relatively large quantity and range of staples consumed that come from home production. Moreover, several of these are not widely traded. Some population groups in Uganda are vulnerable to rising food prices, however, primarily those for whom maize is an important staple, including those dependent upon humanitarian relief and the urban poor. Only a relatively small group of Ugandan households will benefit directly and immediately from rising food prices—the significant net sellers of food crops constituting between 12% and 27% of the population. In this assessment we do not estimate the level and extent of wider second round effects from these higher prices.     

不同模式下农村宅基地退出的农户福利效应研究以福建省晋江市为例

目的 为合理引导农村宅基地有序退出并制定出科学的宅基地退出管理策略,亟需开展不同模式下农村宅基地退出的农户福利效应研究,准确把握农户在此过程中的生活质量变化状况。方法 文章以阿玛蒂亚·森提出的可行能力理论为基础,构建宅基地退出的农户福利评价指标体系,利用晋江市的调研数据,运用模糊数学综合评价方法,评价和比较不同模式下农村宅基地退出的农户福利效应及其差异。结果 资产置换模式和指标置换模式下宅基地退出后农户的总福利水平都有所改善,总模糊指数分别从0.378、0.404上升到0.399、0.418,货币补偿模式总福利水平则呈下降的状态,从0.412下降到0.373。其中资产置换模式和指标置换模式在社会保障、居住条件和心理状况的农户福利水平有所上升,家庭经济和决策参与的农户福利水平下降,两者改变程度有所差异。货币补偿模式只有居住条件的农户福利得到改善。宅基地退出后农户之间的福利差异进一步扩大,福利差异系数从0.114上升到0.147。结论 不同模式的宅基地退出致使农户福利效应差异明显,使其对农户的生活方式和长远生计的影响程度有所不同。因此,应综合考虑不同宅基地退出模式下农户福利效应差异,从科学设定宅基地退出的补偿标准、规范宅基地退出程序、分类实施宅基地退出保障措施等方面提升农户福利水平和促进农户福利均衡发展。     

Household-level effects of China's Sloping Land Conversion Program under price and policy shifts

This study examined how agricultural households involved in China's Sloping Land Conversion Program (SLCP) could respond to expected changes in environmental and livestock policies and changing commodity prices. We calibrated a farm household model using 2009 survey data collected in northeast Gansu Province, China, and examined the responses of four different household groups. Household groups were distinguished based on the resources they possessed for either cropping, livestock husbandry or off-farm employment. We also calculated the opportunity cost of converting sloping land from grain crop production to perennial grass production and included the net value of the replacement crop in these calculations. Our model simulations indicated that subsistence-oriented households were most likely to participate in the SLCP, and that SLCP payment reductions could have large negative income effects for this group. Reductions in SLCP payments increased income inequality among households in the study area. Migration- and cropping-oriented households have fewer incentives to participate in the SLCP. With rising commodity prices, SLCP payments need to rise to avoid that subsistence-oriented households reconvert their land from perennial grasses to annual grain crops. Local government policies related to livestock production are being devised in Gansu as a method to lift incomes, and these policies could also have positive environmental benefits by increasing grass production on sloping land. The introduction of these livestock promotion policies had modest income effects but did not alter the area grown with grasses under the SLCP.     

The impact of land reallocation on technical efficiency: evidence from China

China's rural reforms expose farm households to an increased risk of administrative land reallocation and adjustment. This study explores the impact of land reallocation on technical efficiency, based on a panel data set from rural households in Zhejiang, Hubei, and Yunnan provinces between 1995 and 2002. Our research indicates that the development of a land rental market could serve as a substitute for administrative land reallocation in optimizing the distribution of land resources. The results from the stochastic frontier production function show that land reallocation does have effects on technical efficiency. The different signs for different provinces indicate that the impact of land reallocation on technical efficiency is an empirical issue and depends on the specific institutional settings and the overall economic environment in each province.     

Land rental market legal restrictions in Northern Ethiopia

This study assesses the de jure and de facto land market legal restrictions in the Tigray region in Ethiopia and the extent of implementation of the new land rental restrictions that were introduced in 2006 that state that not more than 50% of a farm can be rented out. The knowledge, perceptions and attitudes regarding the law among local Land Administration Committee (LAC) members, local conflict mediators and a sample of rural households are investigated. We find that the rented area restriction is commonly violated and not enforced. The law is circumvented by framing sharecropping as something other than land rental, although sharecropping is the dominant land rental contract in the region. When it is made clear that the law may hurt weak and vulnerable (often female-headed) households that are unable to farm their land themselves and therefore rent it out, the large majority of LAC members, conflict mediators and rural households are against the law.     

Determinants of smallholder farmers' participation in banana markets in Central Africa: the role of transaction costs

A bivariate probit model was employed to jointly and separately estimate banana market participation decisions of buying and selling households in Rwanda and Burundi using household survey data. Selectivity bias was corrected for estimating the transacted volumes using Heckman's procedure. The results showed that transaction cost‐related factors such as geographical location of households, market information sources, and travel time to the nearest urban center influence market participation. Non‐price‐related factors such as security of land tenure, labor availability, off‐farm income, gender of the household head, and years of farming experience had a significant influence on the transacted volumes. Output prices had a significant correlation with sales volume, indicating price incentives increased supply by sellers. Generally, the findings suggest that policies aimed at investments in rural road infrastructure, market information systems, collective marketing, and value addition of banana products may provide a potential avenue for mitigating transaction costs and enhancing market participation and production of marketed surplus by rural households.     

Urban proximity,demand for land and land shadow prices in Malawi

We assess the spatial and intertemporal variation in farmland prices using per hectare minimum willingness to accept (WTA) sales and rental (shadow) prices in Malawi. We use three rounds of nationally representative farm household panel data from the Living Standards Measurement Surveys (LSMS), collected in 2010, 2013 and 2016. The sample is split in quintiles based on distance from the nearest major city, building on the land valuation and transaction cost theory, and agrarian political economy perspectives on global and national land transactions. Generally, farmland shadow prices decrease with distance from urban areas. However, farmland shadow sales prices increased more sharply between 2010 and 2013 in rural areas (+100 % vs +30 % in urban proximity). The results indicate that the sharp increase in demand for large-scale land transfers following the sharp increase in energy and food prices also affected rural smallholders’ land valuation, even in remote rural areas of Malawi. Conversely, by 2016 land shadow sales prices were again, like in 2010, about three times as high in areas near urban centres compared to remote rural areas. Even though sales prices declined in remote rural areas from 2013 to 2016, rental prices remained high. Using farm household-level population pressure variable, we show that local population pressure is a driver of farmland shadow prices, indicating land scarcity challenges, growing demand for land, and poorly developed land markets. With increasing land scarcity, land markets are becoming more important and need to be factored in when formulating development policies that aim to improve access to land in both peri-urban and rural areas.     

Cash cropping and food crop productivity: synergies or trade‐offs?

The case for promoting export‐oriented cash crops in Africa has generally been based on their direct potential contribution to agricultural productivity and small farmer incomes. A relatively neglected avenue of research concerns the synergistic effects that cash cropping can have on other household activities, including food production. The conventional view that cash crops compete with food crops for land and labour neglects the potential for cash crop schemes to make available inputs on credit, management training, and other resources that can contribute to food crop productivity, which might otherwise not be accessible to farmers if they did not participate in cash crop programs. This article builds on previous research by hypothesising key pathways by which cash crops may affect food crop activities and empirically measuring these effects using the case of cotton in Gokwe North District in Zimbabwe. Analysis is based on instrumental variable analysis of survey data on 430 rural households in 1996. Results indicate that—after controlling for household assets, education and locational differences—households engaging intensively in cotton production obtain higher grain yields than non‐cotton and marginal cotton producers. We also find evidence of regional spill‐over effects whereby commercialisation schemes induce second round investments in a particular area that provide benefits to all farmers in that region, regardless of whether they engage in that commercialisation scheme. The study suggests that the potential spill‐over benefits for food crops through participation in cash crop programs are important to consider in the development of strategies designed to intensify African food crop production.     

Production efficiency of Chinese agriculture: evidence from rural household survey data

A shadow-price profit frontier model is developed to examine production efficiency of Chinese rural households in farming operations. The model incorporates price distortions resulting from imperfect market conditions and socioeconomic and institutional constraints, but retains the advantages of stochastic frontier properties. The shadow prices are derived through a generalized profit function estimation. The shadow-price profit frontier is then estimated and an efficiency index based on the estimated profit frontier is computed and decomposed to household characteristics. Empirical results using data from China's Rural Household Survey for 1991 reject the neoclassical profit maximization hypothesis based on market prices in favor of the general model with price distortions. Farmers' resource endowment and education influence their response to the market restrictions, thus alter their performance in terms of efficiency. The estimated efficiency index ranges from 6% to 93% with a sample average of 62%. Households' educational level, family size and per capita net income are positively related to production efficiency. Households living in mountain areas or with family members employed by the government or state industries are relatively inefficient. Reducing market intervention, allowing right of use of farm land to be transferred among households, encouraging migration of excess farm labor, and promoting farmers' education will improve rural households' efficiency in agricultural production.