The role of modelling in adapting and building the climate resilience of cropping systems.

Author(s):  
H. Kahiluoto ◽  
R. Rötter ◽  
H. Webber ◽  
F. Ewert
2021 ◽  
Vol 41 (2) ◽  
Author(s):  
Blessing Mhlanga ◽  
Laura Ercoli ◽  
Elisa Pellegrino ◽  
Andrea Onofri ◽  
Christian Thierfelder

AbstractConservation agriculture has been promoted to sustainably intensify food production in smallholder farming systems in southern Africa. However, farmers have rarely fully implemented all its components, resulting in different combinations of no-tillage, crop rotation, and permanent soil cover being practiced, thus resulting in variable yield responses depending on climatic and soil conditions. Therefore, it is crucial to assess the effect of conservation agriculture components on yield stability. We hypothesized that the use of all three conservation agriculture components would perform the best, resulting in more stable production in all environments. We evaluated at, eight trial locations across southern Africa, how partial and full implementation of these components affected crop yield and yield stability compared with conventional tillage alone or combined with mulching and/or crop rotation. Grain yield and shoot biomass of maize and cowpea were recorded along with precipitation for 2 to 5 years. Across different environments, the addition of crop rotation and mulch to no-tillage increased maize grain by 6%, and the same practices added to conventional tillage led to 13% yield increase. Conversely, adding only mulch or crop rotation to no-tillage or conventional tillage led to lower or equal maize yield. Stability analyses based on Shukla’s index showed for the first time that the most stable systems are those in which mulch is added without crop rotation. Moreover, the highest yielding systems were the least stable. Finally, additive main effects and multiplicative interaction analysis allowed clarifying that mulch added to no-tillage gives stable yields on sandy soil with high rainfall. Similarly, mulch added to conventional tillage gives stable yield on sandy soil, but under low rainfall. This is the first study that highlighted the crucial role of mulch to enhance the stability and resilience of cropping systems in southern Africa, supporting their adaptability to climate change.


2021 ◽  
Vol 13 (9) ◽  
pp. 5033
Author(s):  
Linda Novosadová ◽  
Wim van der Knaap

The present research offers an exploration into the biophilic approach and the role of its agents in urban planning in questions of building a green, resilient urban environment. Biophilia, the innate need of humans to connect with nature, coined by Edgar O. Wilson in 1984, is a concept that has been used in urban governance through institutions, agents’ behaviours, activities and systems to make the environment nature-inclusive. Therefore, it leads to green, resilient environments and to making cities more sustainable. Due to an increasing population, space within and around cities keeps on being urbanised, replacing natural land cover with concrete surfaces. These changes to land use influence and stress the environment, its components, and consequently impact the overall resilience of the space. To understand the interactions and address the adverse impacts these changes might have, it is necessary to identify and define the environment’s components: the institutions, systems, and agents. This paper exemplifies the biophilic approach through a case study in the city of Birmingham, United Kingdom and its biophilic agents. Using the categorisation of agents, the data obtained through in-situ interviews with local professionals provided details on the agent fabric and their dynamics with the other two environments’ components within the climate resilience framework. The qualitative analysis demonstrates the ways biophilic agents act upon and interact within the environment in the realm of urban planning and influence building a climate-resilient city. Their activities range from small-scale community projects for improving their neighbourhood to public administration programs focusing on regenerating and regreening the city. From individuals advocating for and educating on biophilic approach, to private organisations challenging the business-as-usual regulations, it appeared that in Birmingham the biophilic approach has found its representatives in every agent category. Overall, the activities they perform in the environment define their role in building resilience. Nonetheless, the role of biophilic agents appears to be one of the major challengers to the urban design’s status quo and the business-as-usual of urban governance. Researching the environment, focused on agents and their behaviour and activities based on nature as inspiration in addressing climate change on a city level, is an opposite approach to searching and addressing the negative impacts of human activity on the environment. This focus can provide visibility of the local human activities that enhance resilience, while these are becoming a valuable input to city governance and planning, with the potential of scaling it up to other cities and on to regional, national, and global levels.


Author(s):  
P. S. Carberry ◽  
M. E. Probert ◽  
J. P. Dimes ◽  
B. A. Keating ◽  
R. L. McCown

2021 ◽  
Author(s):  
Keira Webster

Climate change is a systemic issue embedded in and interconnected with the social and economic makeup of a city. Building urban climate resilience requires innovative, collaborative solutions that hinge upon the openness and availability of current and contextual data. Open data tools, in stimulating information sharing, civic engagement, and innovative products, can contribute to climate change planning, building lasting resilience. Through an exploratory research methodology, this paper explores 17 international use cases, providing a basis for the implementation of open data tools in the realm of urban climate resilience, through the following five themes: 1) risk and vulnerability assessment; 2) the inception of initiatives; 3) diverging approaches to preparedness; 4) community mobilization; and 5) mitigation and adaptation. This research aims to spark a dialogue on the intersection of open data tools in urban climate resilience strategies, demonstrating open data as an appropriate tool to cultivate shared understanding and collective action.


Author(s):  
Salil K. Sen ◽  
Junya Pookayaporn

The Sustainability value parity framework is proposed to deepen the understanding of the importance of ‘inter-relatedness' of water-energy-waste with the goal of balancing water usage, aligning energy intensity and optimizing waste utilization. Generic waste that is burgeoning is a deterrent to the practice of sustainability that aligns water, energy, infrastructure, health, food, and lifestyle (Sachs, 2007). This chapter delineates the gap between globalization at the macro-level and global citizenry at the grassroots-base and posits a value bridge assessed by appropriate thresholds of water - energy - waste. The emergent need to strengthen climate resilience and to usher into the sustainable pathway of climate-proofed development needs tuning of processes, lifestyle, hazardous substances and consumption. Climate change manifests as an over-arching risk that is strewn with unpredictability, multiple dimensions, uncertainties, spikes, imbalances leading to inequity.


Author(s):  
Salil K. Sen ◽  
Junya Pookayaporn

The Sustainability value parity framework is proposed to deepen the understanding of the importance of ‘inter-relatedness' of water-energy-waste with the goal of balancing water usage, aligning energy intensity and optimizing waste utilization. Generic waste that is burgeoning is a deterrent to the practice of sustainability that aligns water, energy, infrastructure, health, food, and lifestyle (Sachs, 2007). This chapter delineates the gap between globalization at the macro-level and global citizenry at the grassroots-base and posits a value bridge assessed by appropriate thresholds of water - energy - waste. The emergent need to strengthen climate resilience and to usher into the sustainable pathway of climate-proofed development needs tuning of processes, lifestyle, hazardous substances and consumption. Climate change manifests as an over-arching risk that is strewn with unpredictability, multiple dimensions, uncertainties, spikes, imbalances leading to inequity.


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