Your search found 5 records
1 Zhao, Y.; Xu, X. 2012. China-Africa agricultural co-operation, African land tenure reform and sustainable farmland investments. In Allan, T.; Keulertz, M.; Sojamo, S.; Warner, J. (Eds.). Handbook of land and water grabs in Africa: foreign direct investment and food and water security. London, UK: Routledge. pp.421-435.
Agriculture ; Cooperation ; Land tenure ; Land reform ; Farmland ; Foreign investment / China / Africa
(Location: IWMI HQ Call no: 333.91 G000 ALL Record No: H045693)
2 Branca, G.; Braimoh, A.; Zhao, Y.; Ratii, M.; Likoetla, P. 2021. Are there opportunities for climate-smart agriculture? Assessing costs and benefits of sustainability investments and planning policies in southern Africa. Journal of Cleaner Production, 278:123847. [doi: https://doi.org/10.1016/j.jclepro.2020.123847]
Climate-smart agriculture ; Cost benefit analysis ; Sustainability ; Investment ; Planning ; Policies ; Climate change ; Smallholders ; Farming systems ; Livestock ; Farmland ; Aquaculture ; Profitability ; Households ; Greenhouse gas emissions ; Case studies ; Models / Southern Africa / Lesotho
(Location: IWMI HQ Call no: e-copy only Record No: H050102)
(0.62 MB)
Transformation in the smallholder agricultural sector towards more sustainable and cleaner production systems is needed in Southern Africa. Climate-smart agriculture could be an opportunity in this respect. The paper presents a cost-benefit analysis of the public investment program to promote climate-smart agriculture in Lesotho. Economic profitability of investing in such program in nationwide crop, livestock and aquaculture smallholders’ production is assessed, considering costs and benefits at private level and those that accrue to society. Given uncertainty about the future, a development pathway commercially oriented is compared with a pathway aimed at increasing households’ capacity to adapt their farming systems to the changing climate. Investment returns are above the opportunity cost of capital, under both pathways, indicating the convenience for farmers and the whole society in investing in climate-smart agriculture. The program also leads to a decrease in the greenhouse gas emissions’ intensity, positively contributing to climate change mitigation. The economic evaluation of the carbon-balance increases societal profitability of the investment program.
3 Shen, J.; Zhao, Y.; Song, J. 2022. Analysis of the regional differences in agricultural water poverty in China: based on a new agricultural water poverty index. Agricultural Water Management, 270:107745. [doi: https://doi.org/10.1016/j.agwat.2022.107745]
Agricultural water use ; Poverty ; Water scarcity ; Water stress ; Water resources ; Water availability ; Water governance ; Agricultural production ; Agricultural development ; Indicators / China
(Location: IWMI HQ Call no: e-copy only Record No: H051250)
(8.51 MB)
China's agricultural water resource utilization contradiction is prominent, and there are obvious differences in the distribution and utilization of water resources among regions. The theory of agricultural water poverty is of great significance to promote the efficient utilization of agricultural water resources and alleviate the contradiction of agricultural water use. However, the definition of the existing agricultural water poverty theory is quite controversial, and the mainstream agricultural water poverty index (AWPI) for measuring agricultural water poverty has disadvantages such as complex index selection and lack of unified weights. In this regard, this research takes the lead in providing a more complete definition of agricultural water poverty with reference to the definition of water poverty. In terms of method, the research refers to the Social Water Stress/Scarcity Index (SWSI) framework and proposes a new agricultural water poverty index from the two aspects of agricultural water scarcity and agricultural development capability. Based on this index, the regional differences in agricultural water poverty in China are analyzed. The main findings of the study: The agricultural water poverty index proposed in this study has rich connotations, is easy to compare objectively between regions and is applicable in the field of agriculture. The regional differences in agricultural water poverty in China are large, the number of areas with serious agricultural water poverty problems is large, and such problems last for a long time. The distribution of agricultural water poverty in China has spatial autocorrelation rather than a random distribution. China's relative agricultural water poverty index fluctuates around high values, the gap in agricultural water poverty between regions has not narrowed, and the contradiction in relative agricultural water poverty is prominent. The occurrence paths of agricultural water poverty in different regions are different, and the situation in different regions should be identified based on the scarcity of agricultural water resources and the development capability of agricultural production. Finally, this study expects to improve agricultural water poverty theory to effectively alleviate the problem of agricultural water poverty in different regions and promote balanced regional development.
4 Yan, W.; Li, F.; Zhao, Y.. 2022. Determination of irrigation water quantity and its impact on crop yield and groundwater. Agricultural Water Management, 273:107900. (Online first) [doi: https://doi.org/10.1016/j.agwat.2022.107900]
Irrigation water ; Crop yield ; Groundwater table ; Irrigation schemes ; Water use ; Water demand ; Crop modelling ; Maize ; Water reservoirs ; Surface water ; Soil water content ; Precipitation / China / Shijin Irrigation District / Huangbizhuang Reservoir
(Location: IWMI HQ Call no: e-copy only Record No: H051353)
(2.12 MB)
The objective of reservoir water allocation based on considering the ecological water demand of the downstream river has an important impact on the water allocation of each water user and the downstream ecology. Agricultural irrigation with large water consumption will directly affect crop yield. Irrigation water, as the recharge of groundwater in irrigation districts, also plays an important role in the restoration of groundwater. This research used the range of variability approach (RVA), a method of flow management considering the water demand of river ecosystems, to provide the recommended outflow range (RVA target) of the Huangbizhuang Reservoir upstream of the Shijin irrigation district. First, we used the RVA target to determine the water allocation of each water user, set 27 irrigation schemes with the water allocation of agriculture as a constraint, and used the validated AquaCrop model (seven years of field experiment data were used to calibrate AquaCrop model parameters) to evaluate the most appropriate irrigation schemes and their impact on groundwater restoration in the irrigation district. The results showed that the amount of water available for agricultural irrigation in the flood season under the RVA target was 84 mm, which was 36 mm less than the current irrigation quota (120 mm). Three irrigation schemes better than the current scheme (scheme 0) were selected, i.e., scheme 1 (irrigate 42 mm at the seedling and jointing stages), scheme 16 (irrigate 42 mm at the seedling stage), and scheme 22 (irrigate 84 mm at the seedling stage). Scheme 22 increased the yield of corn and WP (water productivity), which were 17 kg/ha and 1 kg/ha/mm higher than scheme 0, respectively, which provided the greatest increase in yield. Scheme 22 can restore 0.727 m of the groundwater table. The yield increased in scheme 16 was 4 kg/ha higher than that in scheme 0. Scheme 16 can restore 0.982 m of the groundwater table, which was the most conducive scheme for groundwater recharge. The WP of scheme 16 and scheme 1 was slightly different from that of scheme 0. There was a slight difference in biomass among the four schemes. The yield increased in scheme 1 was 12 kg/ha higher than that in scheme 0, which could restore 0.727 m of the groundwater table simultaneously, which was for a normal year. This research can provide a reference for the formulation of a local irrigation scheme to stabilize and increase summer maize yield on the premise of satisfying the ecological water demand of the river and restoring the groundwater table.
5 Zhao, Y.; Zhao, T.; Xiong, X.; Sun, Y. 2023. Understanding the conflict and cooperation in the Yarlung Tsangpo-Brahmaputra River Basin under climate change: a quantitative view based on water events. Journal of Water and Climate Change, 14(4):1226-1246. [doi: https://doi.org/10.2166/wcc.2023.411]
Climate change ; Conflicts ; Water resources ; Water management ; Cooperation ; Water power ; River basins ; Transboundary waters ; Political aspects ; Food security / India / China / Bangladesh / Tibet / Yarlung Tsangpo-Brahmaputra River Basin
(Location: IWMI HQ Call no: e-copy only Record No: H051925)
https://iwaponline.com/jwcc/article-pdf/14/4/1226/1211927/jwc0141226.pdf
https://vlibrary.iwmi.org/pdf/H051925.pdf
https://vlibrary.iwmi.org/pdf/H051925.pdf
(0.98 MB) (0.98 MB)
The Yarlung Tsangpo-Brahmaputra River Basin (YBRB) has long been troubled by the competitive water development activities of India, China, and Bangladesh. While energy thirst and food security keep challenging the riparian States, climate-related changing monsoon pattern increases the potential for conflicts over scarce water. Based on a quantitative analysis of 400 water events spanning the years 1958–2020 of the basin, this research tries to provide a holistic understanding of the conflict and cooperation and explore the possibility of water war or ‘climate-based’ water war in the basin; and thus formulate more precise recommendations to help prevent and mitigate conflicts. The results of this quantitative research surprisingly reveal that, instead of being main causes of bilateral conflict in the basin, the ‘energy imperative’ and the ‘climate imperative’ have become two major catalysts for water cooperation in the basin, water war is therefore highly unlikely. However, current bilateral cooperation on climate change mainly involves ‘climate adaptation’; few efforts have yet been made cooperatively in the field of ‘climate mitigation’; while traditional disputes around food and energy persist, the imperative of ecological protection and the lack of attention to cooperative climate mitigation are set to intensify potential conflict in the YBRB.
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