Report and recording from the UN Food System Summit Dialogue

UK-China Critical Zone Observatory Programme along with the Global Food and Environment Institute at the University of Leeds  hosted a UN food Systems Summit dialogue in May 2021. The title of the dialogue: Is a Circular Economy approach a ‘risk free’ means of meeting future global food demand in a sustainable manner? The aim of the dialogue was to: Share knowledge on the feasibility and risks of using organic fertiliser in agricultural production through adoption of a Circular Economy approach. A recording of the plenary sessions can be found here on the GFEI YouTube channel. A copy of the report submitted after the event can be found: Download Report Participants could see the benefit…

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Publications from the programme

David Oliver – Our paper on understanding nitrate loss from SW China karst terrain using stable isotope tracing & high-frequency sensing is now available  http://doi.org/10.1016/j.watres.2020.116388 Susan Waldron – Another paper: High-frequency monitoring reveals how hydrochemistry and dissolved carbon varies during events… https://sciencedirect.com/science/article/pii/S0048969720303430 Shunhua Yang – I am happy to announce that our paper on deep nitrate is out! Many thanks to those who kindly provided support. https://authors.elsevier.com/c/1azW9cA-Idd-7    It was a real privilege for Tim Quine to work with Hongyan Liu and Zihan Jiang on this paper. Scientists have revealed the critical role that the chemical composition of bedrock plays in limiting…

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Analysing and simulating spatial patterns of crop yield in Guizhou Province Summary Sheet

A new summary sheet around the work completed by Boyi Liang during his time working on the research programme at Exeter University. The summary sheet focuses on  analysing and simulating spatial patterns of crop yield in Guizhou Province . Traditional models (including process-based models and statistical models) have been rarely studied in Karst region due to its complicated topography. Boyi found that back propagation network had the best performance based on both accuracy and runtime. Among the 13 influencing factors investigated, temperature (16.4%), radiation (15.3%), soil moisture (13.5%), fertilization of N (13.5%) and P (12.4%) had the largest contribution to crop yield spatial…

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Deep Nitrogen Accumulation and Sources Summary Sheet

A new summary sheet around deep nitrogen accumulation and sources has been produced by the team highlighting the findings and relevance for policy making and practice. They found that land use and critical zone features (e.g. thickness of loess deposit, water regime) are key determinants of N accumulation patterns where agricultural inputs – e.g. fertiliser, manure and organic sources – are significant contributors. In the Loess plateau region, accumulated nitrate introduced by human activities is mainly distributed in the upper vadose zone (above 30 m), indicating there is currently a low risk of nitrate leaching into groundwater. A copy of the Summary…

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Science-Policy-Practice Interface Summary sheet

A new summary sheet on the topic of ‘Science-Policy-Practice Interface’ has been produced based on the knowledge exchange research of Phase 1 project. A conceptual model of how the science-policy-practice interface works in China has been developed. Significantly-less awareness and use of two-way KE by Chinese government, scientists were identified. This summary sheet has been published on Project WeChat Platform together with the summary sheet of ‘Deep Nitrogen Accumulation and Sources’ and ‘Analysing and Simulating Spatial Patterns of Crop Yield in Guizhou’. Download the summary sheet at this link. 

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Guizhou Karst area knowledge exchange report

A Knowledge Exchange survey and interview research was carried out in Guizhou’s karst area. This research sought to understand the current ways in which Chinese leaders and farmers learn from scientists and what are key issues facing them that the red soil CZ research can help with. This report documents the findings of the needs of local farmers, their farming practices and understanding of landscape processes, along with learning preferences of different public groups (farmers and village, town and country leaders). An English copy of the report can be found (Guizhou Report) or from the OSF project page here. A Chinese copy…

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Jiangxi’s red soil Knowledge Exchange report

Following on the early stage of exploration in Guizhou’s karst area (Guizhou report), similar KE survey and interview research was carried out in Jiangxi’s red soil landscape in March 2018. This research sought to understand the current ways in which Chinese leaders and farmers learn from scientists and what are key issues facing them that the red soil CZ research can help with. This report documents the findings of the needs of local farmers, their farming practices and understanding of landscape processes, along with learning preferences of different public groups (farmers and village, town and country leaders). A copy of the…

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Summary Report of China – UK Knowledge Exchange Project.

Supplementary funding was gained to add a knowledge exchange component to the UK-China Critical zone programme. This study explores what knowledge transfer and knowledge exchange activities can facilitate communication and understanding between academics and the non-academic groups in these CZ research area in the context of Chinese culture, especially in Chinese rural areas. “With two-years research, better understanding has been developed of the Knowledge Exchange dynamic and science-policy-practice interface in China rural areas. Now this gained understanding can allow us to consider the existing pathway to impacts of each Critical Zone project and make suggestions of amendments which may make these…

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Recent SPECTRA – Karst publications

The programme is in its third year (final year of the UK side of Phase 1) and as such publications are being published. Below is a list of recent publications made by researchers within the SPECTRA – Karst team (Project 3) within the UK- China CZO Programme. Publications: Dandan, L., Zhang, X., Green, S.M., Dungait, J.A.J, Wen, X., Tang, Y., Guo, Zhiming, Yang, Y., sun, Xiaomin, Quine, T.A. 2018. Natural vegetation recovery of abandoned sloping farmland influences nitrogen functional genes within soil profiles at the Puding Karst Critical Zone observatory, SW China. Soil Biology and Biochemistry, 125, 93-102. PDF   Ma, M.,…

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Recent SPECTRA-Karst conference presentations

The programme is in its third year and as such the teams are busy presenting results and work at conferences. Below is a list of recent conference presentation made by researchers within the SPECTRA-Karst team (Project 3) within the UK- China Programme.     Conferences: Li, D.D., Zhang, X.Y., Green, S.M., Dungait, J.A.J., Quine, T.A., Wen, X.F., Wang, Q.B. 2018. The Linking of denitrification rates and environmental variables and microbial abundance across natural vegetation recovery after abandonment of agriculture in karst region. The 11th International Symposium on Agriculture and the Environment, Nanjing, China. Guo, Z., Zhang, X., Green, S.M., Dungait, J.A.J, Wen,…

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