hohPublica :: Browsing by Subject "Hochland"

Browsing by Subject "Hochland"

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Agricultural sciences in upland Northern Vietnam : situating research in a dynamic environment
(2006) Friederichsen, Rupert
This paper aims to provide an introductory overview over the socio-cultural context of Northern Vietnam to agricultural researchers. The paper focuses on the interplay between Vietnam?s lowlands and the uplands to specify what makes the Northern uplands a distinct region; as an object of empirical agricultural research and as a context of application of research results. The paper reviews the developments of selected social institutions from pre-colonial times to the current era of ?renovation?. First, developments in Vietnam?s legal and administrative structures are outlined. Second, education and higher education, particularly the agricultural sciences, are discussed. The third and main part elaborates on social, political, and economic specifics of the Northern Uplands. It is suggested that the relationship between formal and informal institutions is crucial for understanding the dynamics of contemporary uplands Vietnam, particularly in the given multi-cultural situation.
Analysis of factors driving differences in intensification and income from agriculture among smallholder farmers in Northern Vietnam
(2021) Ufer, Susanne; Zeller, Manfred
Challenged by difficult topography, remoteness, high ethnic diversity, low levels of infrastructure, high poverty, and high dependency on upland farming systems the well-being and incomes of ethnic minorities and the poorest in the Northern Uplands of Vietnam, like in many upland areas in Southeast Asia, are still predominantly linked to agricultural productivity. At the same time agricultural commercialization, the introduction of modern agricultural technologies, higher input use, and stronger agricultural specialization have increased the demands on households’ ability to adequately invest in agricultural intensification and to protect themselves from agricultural income risks. In the Northern Uplands, one of these extensively cultivated, highly commercialized, and highly specialized upland crops is maize. A crop that needs high levels of inputs and is predominantly grown for cash income from poor and non-poor farmers alike. Given the low asset levels of households, it is therefore of particular interest which differences in challenges farmers may face regarding the improvement of maize production dependent on their wealth level. Yet, no detailed research exists that analyses how the level of asset endowments with natural, human, physical, financial, and social capital as well as risk aversion impact technology adoption, maize intensification, and maize productivity of farmers of different household wealth. This doctoral thesis seeks to fill these knowledge gaps by investigating the following research topics: (1) the level and short-term changes in agricultural input use and productivity in maize production by household wealth, (2) the impact of risk aversion on fertiliser use in maize production by household wealth, and (3) the impact of household asset levels and the return to assets on productivity differences in maize production between households of different wealth. Research analysis builds on a quantitative dataset collected from a random panel sample of 300 rural households in Yen Chau district, Son La province, in the Northern Uplands of Vietnam in the period from 2007 to 2010. The research area is relatively poor, ethnic diverse, with a high dependency on upland agriculture, crop income, and maize income in particular. Econometric analysis is carried out firstly by organizing households by wealth through a composite asset-based indicator derived from principal component analysis (PCA) and secondly by applying extensive descriptive analysis, regression analysis, and econometric decomposition-based techniques to the so differentiated dataset. Results from the first research topic (1) “Level and short-term changes in agricultural input use and productivity in maize production by household wealth” show that average numbers on maize input use, maize productivity, and maize income hide important wealth-related differences. While adoption rates of modern maize seeds and mineral fertilisers are widespread and very similar by wealth terciles over time, input use intensity of fertilisers, maize yields, and maize incomes differ significantly between the poorest tercile and the wealthier maize farmers. While a substantial share of the poorest household tercile uses fertiliser quantities well below recommended levels, households of the middle and wealthiest terciles are about twice as likely to apply fertilisers according to average or above-average fertiliser recommendation levels. Moreover, between approximately one-tenth and one-quarter of households from all wealth terciles overuse fertiliser, too. The poorest tercile further buys despite the lower use of fertilisers more often seed and fertiliser inputs on-loan than households from higher wealth terciles. Consequently, the poorest households have to pay relatively higher input costs at otherwise mostly similar market prices for seed and fertiliser inputs and maize output. Yield, input price, and output price risks are high in the research area for all households. However, the poorest tercile of households suffers somewhat more from risks due to fluctuations in yield, output price, and maize income. Results from the second research topic (2) “Impact of risk aversion on fertiliser use by household wealth” show that the fertiliser quantity applied to maize is affected by the risk aversion of the household head in the poorest one-third of households and not affected by the risk aversion of the household head of the wealthier households. The results remain valid when different empirical risk aversion measures (i.e. self-assessment scale and lottery game) are considered, when instead of total fertiliser quantity, the quantity of NPK, urea, or total nitrogen are considered, as well as when different measures of household wealth are considered (i.e. asset-based wealth index, household per-capita income, and household per-capita consumption expenditure). Results from the third research topic (3): “Impact of household asset levels and the return to assets on productivity differences in maize production between households of different wealth” show that quantity-based assets effects are more important for the size of the maize income gap per hectare between the poorest one-third of maize farmers and maize farmers of higher wealth than the return-based assets effects. Quantity-based asset effects significantly account for more than two-thirds of the entire maize income gap, while return-based assets effects are on the contrary not statistically significant at all. From the quantity-based assets effects, credit limit, ethnicity of the household head, and upland land value have large and significant effects. Farm size, value of buffalo and cattle, and household head age have smaller and less constant effects. Credit limit is the most important and most consistent driver by size, showing that financial access for poor minority households is still a defining obstacle to agricultural productivity. Ethnicity of the household head has a strong and positive but decreasing impact on the maize income gap, showing that ethnicity-related soft factors, such as differences in location, agricultural practices, and traditions, should be taken more into acknowledgement. From the significance of the upland land value, we conclude that environmental factors, such as the prevention of soil erosion, the protection of soil fertility, and considerations of long-term sustainability, should gain more emphasis. Other minor factors driving the maize income gap are discussed in more detail in the thesis. From the results of the doctoral thesis, we draw the following main conclusions for the development of pro-poor strategies for the improvement of upland agricultural productivity. Firstly, agricultural research and extension should pay more attention to identifying bottlenecks households face dependent on their wealth level to avoid overseeing the specific obstacles poor and non-poor farmers face that may result in the perpetuation of poverty traps, increased inefficiency, and the waste of resources. Consequently, more emphasis is needed on research and extension that incorporate wealth-related agronomic, financial, and risk-related aspects, that better account for the efficient use of inputs, and that place increased emphasis on the adaptation of technological innovations to the farm systems and needs of upland minorities. Secondly, more emphasis should be placed on helping poor households to deal with risks. While all households face yield, input and output price risks, risk aversion affects input intensification decisions in the poorest one-third of households. Hence, especially for the poorest more emphasis should be placed on the expansion of risk management options that account for the lower risk-bearing capacity and higher risk aversion of the poor, and the often higher transaction costs. This includes measures such as improving the financial literacy of households, allowing households to borrow for consumption, linking credit with insurance or saving options, decreasing transaction costs and the complications linked with successfully applying for loans, as well as, if possible, developing innovations like improved seeds or agricultural management systems that have the capacity to lower the downside risks of production. Thirdly, assets should be considered an important driver of agricultural productivity differences between poor and non-poor farmers. Based on the findings that the quantity-based effects of assets are the major and only significant driver of the maize income gap between the poor and non-poor maize farmers, we conclude that the poorest households can have the same productive agricultural potential as the non-poor if they would have the same level of assets. Supporting households to get access to and accumulate assets should be therefore an important policy goal. This is particularly true about assets that can be influenced by agricultural research, improved agricultural extension, and targeted development policy. Based on our research findings this concerns the improvement of access to credit, the support of ethnic minority households, and efforts to increase the sustainability of upland agriculture. Fourthly, investing in the long-term suitability of maize production and upland farming systems is recommended. While maize can be a very profitable cash crop in the short run, the results of this doctoral thesis also show that a strong specialization in maize production may embody multiple short-term and long-term economic as well as sustainability related livelihood risks. This includes the possibly limited extent of the profitability of additional credit and inputs as well as a strong dependency on the quality of natural resources. In consequence, policies should focus on directly improving the conditions for maize productivity as well as improving the conditions for long-term development. Such measures include supporting households to invest more in profitable on-farm and off-farm diversification, the improvement of infrastructure and extension to increase the profitability of unused cropping choices, the development of profitable soil protection measures, and investments in education and the development of off-farm job alternatives.
Biodiversity and arthropod abundance in the upland of Leyte, Philippines
(2005) Szinicz, Gundula; Sauerborn, Joachim
In the humid tropics of SE-Asia the last primary forests are dwindling at an alarming rate. In many regions cultivated and degraded land outnumbers by far natural ecosystems. In the upland of Leyte island this is due to commercial and illegal logging activities and intensive slash-and-burn agriculture. The loss of the natural vegetation cover is accompanied by a decrease in diversity of fauna and flora, consequently also in ecosystem services and interactions, thus destabilizing the system and finally leading to degradation. To further preserve and restore natural biodiversity landscapes dominated by man need to be included in an overall research strategy. So far only few studies focus on the biodiversity of cleared and converted land adjacent to natural areas in the tropics. This study was conducted in a Philippine upland area and focused on interchanges of insects between the natural and the managed landscape. Two questions were approached. (1) Which structures and components of the cultural landscape are of significance for conserving arthropod biodiversity, and (2) are there species which originate from the natural forest and are able to become resident in the man-made systems? In order to answer these questions insect- and plant surveys as well as the movement patterns of selected insect species were examined along a gradient from the natural forest through the agricultural land. So as to define the effects of habitat destruction on the arthropod community of the research area arthropod communities of different habitats between the natural and agricultural ecosystems with increasing distance to the forest, in relation to the vegetation were compared. Insect sampling was carried out using modified Malaise traps, whereby four habitats were considered: (a) forest interior, (b) forest margin, (c) vegetable fields and (d) chayote ((Sechium edule (Jacq.) Sw. (Cucurbitaceae); the only perennial vegetable of the area) fields. These traps allowed a separate catch for each of the two arrival sides, whereby the one was always opened to the forest and the other to the field. Trapping was set up for a total of 18 months in 2001 and 2002 at three sites with the four habitats each. Arthropod diversity, composition of the arthropod community and trophic guild composition at habitats were determined for each habitat and arrival side. Obtained results are presented and discussed with regard to first: arthropod diversity and community composition along the transect from natural through agricultural systems; second: abundance patterns of selected species in natural and agricultural systems and third: abundance patterns of selected species within the agricultural land. It was found that plant diversity, vegetation structure and taxonomic composition as well as differences in the turnover of the vegetation at habitats (productivity of vegetation) influence arthropod groups and species in the study area in different ways which could not be generalised. Further, the relationships of insects between the natural forest and the open agricultural land were considered. In order to identify species that occur in the forest as well as in the open country, first, insects at sites of the forest interior, the forest margin and the agricultural land, were recorded using modified Malaise traps. Then, movement patterns of selected species were determined based on their abundances at the different habitats and arrival sides. In addition it was tried to find out whether major pest species of the cultivated crops show any relationship to the adjacent natural forest, and whether species originating from the forest (non-pest species) are able to colonize open country. The results indicate that the habitat of the pest species considered is limited to the cultivated land and does not include the forest. None of the non-pest species recorded in this study would be able to exist permanently in the agricultural area. They all depend on a closed forest habitat and therefore will become extinct as the forest disappears with proceeding slash-and-burn agriculture. However, some but not all of the pest and forest species were regularly recorded from the forest margin. Finally it was focused on relationships of insects between perennial and consecutive changing vegetable crops. Two kinds of habitats were distinguished: (i) frequently disturbed and rotational changing vegetables with simple architecture; (ii) rarely disturbed stands of chayote, with complex architecture. The impact of changing crop and weed species composition and the agricultural practices (soil preparation, planting, weeding, harvest) applied on the abundance of selected insect species and the question whether stands of chayote are used as refuge as long as conditions in the seasonal vegetables become unfavourable due to agroecosystem management applied were analysed. The insect species investigated include phytophagous specialists and generalists as well as beneficials (predators and pollinators). It only was possible to generalize movement patterns regarding significance of abundance variations at habitats and at opposite arrival sides of the traps in each habitat. With respect to the population development of the species in relation to cropping patterns and agricultural practices applied no common patterns could be determined. The results contribute to the assessment of the effects of man-made habitat conversion on the arthropod fauna in tropical ecosystems. The identification and classification of habitats and their interactions might enhance the understanding of ecosystems in order to make aware the need to preserve and restore biodiversity.
Linkages between poverty and sustainable agricultural and rural development in the uplands of Southeast Asia
(2008) Zeller, Manfred; Beuchelt, Tina; Fischer, Isabel; Heidhues, Franz
Most of the upland areas of Southeast Asia are characterized by insufficient infrastructure, low productivity in smallholder crop and animal production, mounting environmental problems such as soil and forest degradation and loss of biodiversity, increasing population pressure, and widespread poverty, particular in rural areas. While some upland areas in South East Asia have been experiencing considerable progress during the past twenty years, others have stagnated or even declined with respect to economic, social and environmental objectives of development. The purpose of the paper is to describe major trends regarding sustainable development in the upland areas of selected countries in South East Asia, and review explanatory approaches for the observed trends based on case studies from Cambodia, Laos, Thailand, Vietnam, and Indonesia. The conceptual framework for this paper builds on the critical triangle of sustainable rural development. Here, equity or poverty alleviation, economic growth, and the protection of the environment are the three major policy objectives. We further distinguish three explanatory approaches for land use change and agricultural and rural development. Apart from the market approach and the population approach, we suggest that future studies should focus more on governance issues as a major driving force of land use change. The governance approach appears particularly relevant for upland areas which are often politically and institutionally marginalized. The paper begins with a review of definitions of sustainability, and proceeds with a conceptual analysis of the two-way linkages between poverty and the environment, and poverty and economic growth in rural areas. This is followed by empirical findings from research on agriculture and forestry as the major land uses in upland areas of selected South East Asian countries. Based on the results of different case studies from Cambodia, Laos, Vietnam and Indonesia, we seek to contrast stories of relative success with those of failure. The paper concludes with implications for rural and agricultural development policies, and suggests future areas of research.
Microeconomic impacts of institutional transformation in Vietnam?s Northern uplands : empirical studies on social capital, land and credit institutions
(2012) Saint-Macary, Camille; Zeller, Manfred
Vietnam's economic achievement over the last two decades is frequently regarded as a successful case of development. The Doi Moi reform program enacted in 1986 gradually led the transition from a centrally-planned to a market-oriented economy. In rural areas, reforms entailed a deep transformation of institutions and were aimed at placing back farmers at the center of decision making as a way to boost agricultural production and alleviate poverty. Agricultural markets were gradually liberalized, user rights were transferred to smallholder farmers for most of the agricultural land, and anti-poverty programs were implemented. At the national level, the high economic growths in all sectors of the economy have permitted a drastic reduction of poverty. These successes however did not take place evenly through the country. Mountainous regions and its inhabitants have lagged behind in the process. The poverty incidence in the Northern Uplands was still twice as large in 2008 than in the rest of the country. In addition, the rapid population growth combined with the intensification and expansion of agricultural systems into fragile ecosystems have considerably increased pressure on natural resources. This accentuates the risk for resource-based economies such as Vietnam?s mountainous regions to get trapped in a vicious circle whereby environmental degradation and poverty mutually reinforce each other and durably undermine economic development. The existence of complex relations between poverty and environmental degradation in fragile ecosystems implies that equity, economic growth and environmental sustainability cannot be treated as separate objectives but must jointly be addressed to ensure sustainable development. Drawing on a conceptual framework that highlights the determinant role of institutions in the poverty-environment nexus, this thesis investigates to which extent the current institutional framework addresses objectives of equity, economic growth and environmental sustainability. It focuses on three critical dimensions: the definition of property rights, the functioning of intertemporal markets, and social capital. More specifically, the thesis addresses the following research questions: (i) Has the individualization of land access and land titling policy enhanced tenure security, and thereby increased the adoption of soil conservation practices? (ii) Has a land market emerged in the study area? (iii) Is the credit market equitable and efficient? Does state intervention induce a more equitable and efficient allocation than other sectors? (iv) Does ethnic diversity undermine collective action and the formation of social networks? These questions are investigated empirically in the six chapters of this thesis. Analyses build on a rich and primary quantitative household- and village-level dataset collected in 2007/2008 in Yen Chau, a mountainous district of the Northern Upland region, as well as on qualitative information gathered in the field through focus group discussions and informal discussions with local stakeholders. Successes of the land reform lie in its egalitarian character which enables most farmers to cultivate land with long term user rights. Yet, results show that tenure security is not fully guaranteed and land reallocations conducted by the government as well as its indecision regarding the prolongation of land use rights at the end of their term have created mistrust and uncertainty. The incertitude is found to impede the adoption of soil conservation technologies and to hamper the land market, depriving the local economy from potentially important equity and efficiency gains, and threatening environmental sustainability. The credit market, thanks to good levels of social capital, is found to function relatively well and enable all farmers including the poor to finance agricultural input and consumption through loans. The state-governed formal sector, despite offering competitive contract terms remains a secondary credit source, particularly for the poor. The costly micro-credit program of the government fails to reach the poor and is found to have only limited impact on welfare. This inefficiency causes an important leakage of state resources. Finally, we do not find as predicted by the literature, that ethnic heterogeneity undermines participation in local organizations and the formation of social networks. This impact appears to depend on the political nature of organizations, and the public nature of goods managed. Moreover, evidence shows that heterogeneity encourages bridging connections among farmers and constitutes as such a factor that can foster innovations and economic development. The contributions of this thesis are twofold. First, it identifies sources of success and failure in the current institutional framework to promote sustainable development in Vietnam?s mountainous areas from which we derive policy recommendations. Evidence in this thesis highlights limitations of the top-down approach that dominates public intervention in mountainous areas. These interventions are usually costly and not always successful in enhancing equity, efficiency and the environmental sustainability of resource use. This stresses the need for the Vietnamese government to further enhance the functioning of incentive-based mechanisms in the economy as a complement to current policies. In this perspective, the clarification of the land reform objectives, the development of a land market, the promotion of independent and financially sustainable financial institutions, the reinforcement of the legal system, and the support of the emergence of an independent civil society are all measures that may support sustainable development in Vietnam?s mountainous regions.

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