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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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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Recent Programme Publications from the Loess Plateau team.

The programme is in its third year and as such publications are being published. Below is a list of recent publication made by researchers within the Loess plateau team (Project 5) within the UK- China Programme. Comber A, Wang Y, Lü Y, Zhang X and Paul Harris (in press). Hyper-local geographically weighted regression: extending GWR through local model selection and local bandwidth optimization. Paper accepted for publication in the Journal of Spatial Information Science (July 2018) see http://www.josis.org/index.php/josis/article/view/422/217 Fu W, Lü Y, Harris P, Comber A and Wu L (2018). Peri-urbanization may vary with vegetation restoration: A large scale regional…

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Recent Publication on Faecal Indicators in the Karst region.

Sarah Buckerfield recently published her first paper. This paper provides (a) a review of the knowledge base underpinning E. coli as an indicator of microbial water contamination in mixed-land use karst systems, and (b) identification of research priorities to improve the utility of ​E. coli as a tool for understanding microbial contamination sources, transport mechanisms, and fate in the southwest China karst region. authors.elsevier.com/a/1XSHSB8ccgcfk Sarah is a a PhD student at Glasgow University, aligned with Karst Project (Project 1) as part of the UK- China CZO Programme and funded by IAPETUS DTP (@IapetusDTP).

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