Matti Kummu
Dados Biográficos
| ID | 347073 |
|---|---|
| NOME | Matti Kummu |
| PRENOMES | Matti |
| SOBRENOME | Kummu |
| ASSINATURA | KUMMU M |
| AFILIAÇÕES | Aalto University |
| ORCID | 0000-0001-5096-0163 |
| VERIFICADO | Sim |
| TOTAL DE OBRAS | 43 |
| TOTAL DE CITAÇÕES | 82 |
| TOTAL COMO AUTOR | 43 |
| TOTAL COMO EDITOR | 0 |
| PRIMEIRO ANO DE PUBLICAÇÃO | 2008 |
| ANO MAIS RECENTE DE PUBLICAÇÃO | 2025 |
| ÍNDICE H | 5 |
A review of open data for studying global groundwater in social–ecological systems
Global data have served an integral role in characterizing large-scale groundwater systems, identifying their sustainability challenges, and informing on socioeconomic and ecological dimensions of groundwater. These insights have revealed groundwater as a dynamic component of the water cycle and social–ecological systems, leading to an expansion in groundwater science that increasingly focuses on groundwater’s interactions with ecological, socioe…
Rising income inequality across half of global population and socioecological implications
Income inequality is one of the most important measures to indicate socioeconomic welfare and quality of life, and has implications for the environment. Yet, especially at the subnational level, comprehensive global data on income distribution are widely missing. Such data are essential for assessing patterns of inequality within countries and their development over time. Here we created seamless global subnational Gini coefficient and gross nati…
The potential to increase food system resilience by replacing feed imports with domestic food system byproducts
Many key feed commodities used in livestock and aquaculture production are highly traded in global agricultural markets. The dependence on these imported inputs may create vulnerabilities for importing countries when disturbances in global trade flows occur. Replacing feed imports with domestic food system byproducts—i.e. secondary products from crop, livestock and aquaculture processing—offers a solution to decrease trade dependency, increase fo…
Scenario projections of South Asian migration patterns amidst environmental and socioeconomic change
Projecting migration is challenging, due to the context-specific and discontinuous relations between migration and the socioeconomic and environmental conditions that drive this process. Here, we investigate the usefulness of Machine Learning (ML) Random Forest (RF) models to develop three net migration scenarios in South Asia by 2050 based on historical patterns (2001–2019). The model for the direction of net migration reaches an accuracy of 75%…
Earth beyond six of nine planetary boundaries
This planetary boundaries framework update finds that six of the nine boundaries are transgressed, suggesting that Earth is now well outside of the safe operating space for humanity. Ocean acidification is close to being breached, while aerosol loading regionally exceeds the boundary. Stratospheric ozone levels have slightly recovered. The transgression level has increased for all boundaries earlier identified as overstepped. As primary productio…
World's human migration patterns in 2000-2019 unveiled by high-resolution data
Despite being a topical issue in public debate and on the political agenda for many countries, a global-scale, high-resolution quantification of migration and its major drivers for the recent decades remained missing. We created a global dataset of annual net migration between 2000 and 2019 (~10 km grid, covering the areas of 216 countries or sovereign states), based on reported and downscaled subnational birth (2,555 administrative units) and de…
Beyond the Green Revolution
Non peer reviewed
Quantifying Earth system interactions for sustainable food production via expert elicitation
Several safe boundaries of critical Earth system processes have already been crossed due to human perturbations; not accounting for their interactions may further narrow the safe operating space for humanity. Using expert knowledge elicitation, we explored interactions among seven variables representing Earth system processes relevant to food production, identifying many interactions little explored in Earth system literature. We found that green…
Feeding the world in a narrowing safe operating space
Climate change risks pushing one-third of global food production outside the safe climatic space
Food production on our planet is dominantly based on agricultural practices developed during stable Holocene climatic conditions. Although it is widely accepted that climate change perturbs these conditions, no systematic understanding exists on where and how the major risks for entering unprecedented conditions may occur. Here, we address this gap by introducing the concept of safe climatic space (SCS), which incorporates the decisive climatic f…
Global migration is driven by the complex interplay between environmental and social factors
Migration manifests an important response and adaptation measure to changes in the environment and socioeconomic conditions. In a time when environmental stressors and risks are unprecedentedly increasing, understanding the interplay between the underlying factors driving migration is of high importance. While the relationships between environmental and socioeconomic drivers have been identified conceptually, the comprehensive global-scale spatia…
The Water Planetary Boundary
Impact of green water anomalies on global rainfed crop yields
The importance of green water (moisture from rain stored in soils) for global food and water security is widely recognized, with process-based simulation models and field-level studies demonstrating its role in supporting rainfed agriculture. Despite this evidence, the relationship between green water anomalies and rainfed agriculture has not yet been investigated using statistical models that identify a causal relationship between the variables.…
Feeding ten billion people is possible within four terrestrial planetary boundaries
Increasing dependence of lowland populations on mountain water resources
The demanding quest for harmony
China’s millennial quest for harmony between nature and humanity is as important today as it has always been. Today’s challenges are momentous; but at the same time, China’s capacity to cope with them is strengthening rapidly. We analyse China’s freshwaters using the social-ecological systems approach in a novel way. Quantitative, globally-scaled indicators for freshwater vulnerability, adaptive capacity (AC) and resilience, and their temporal ev…
Gridded global datasets for Gross Domestic Product and Human Development Index over 1990–2015
An increasing amount of high-resolution global spatial data are available, and used for various assessments. However, key economic and human development indicators are still mainly provided only at national level, and downscaled by users for gridded spatial analyses. Instead, it would be beneficial to adopt data for sub-national administrative units where available, supplemented by national data where necessary. To this end, we present gap-filled…
Greenhouse gas emissions of hydropower in the Mekong River Basin
The Mekong River Basin in Southeast Asia is undergoing extensive hydropower development, but the magnitudes of related greenhouse gas emissions (GHG) are not well known. We provide the first screening of GHG emissions of 141 existing and planned reservoirs in the basin, with a focus on atmospheric gross emissions through the reservoir water surface. The emissions were estimated using statistical models that are based on global emission measuremen…
A developing food crisis and potential refugee movements
Managing flood risks in the Mekong Delta
Climate change and accelerating socioeconomic developments increasingly challenge flood-risk management in the Vietnamese Mekong River Delta-a typical large, economically dynamic and highly vulnerable delta. This study identifies and addresses the emerging challenges for flood-risk management. Furthermore, we identify and analyse response solutions, focusing on meaningful configurations of the individual solutions and how they can be tailored to …
Water scarcity assessments in the past, present, and future
Water scarcity has become a major constraint to socio‐economic development and a threat to livelihood in increasing parts of the world. Since the late 1980s, water scarcity research has attracted much political and public attention. We here review a variety of indicators that have been developed to capture different characteristics of water scarcity. Population, water availability, and water use are the key elements of these indicators. Most of t…
Resilience in the global food system
Ensuring food security requires food production and distribution systems function throughout disruptions. Understanding the factors that contribute to the global food system's ability to respond and adapt to such disruptions (i.e. resilience) is critical for understanding the long-term sustainability of human populations. Variable impacts of production shocks on food supply between countries indicate a need for national-scale resilience indicator…
Bringing it all together
Spatial Variation in Seasonal Water Poverty Index for Laos
Reserves and trade jointly determine exposure to food supply shocks
While a growing proportion of global food consumption is obtained through international trade, there is an ongoing debate on whether this increased reliance on trade benefits or hinders food security, and specifically, the ability of global food systems to absorb shocks due to local or regional losses of production. This paper introduces a model that simulates the short-term response to a food supply shock originating in a single country, which i…
The water management network of Angkor, Cambodia
Meticulous survey of the banks, channels and reservoirs at Angkor shows them to have been part of a large scale water management network instigated in the ninth century AD. Water collected from the hills was stored and could have been distributed for a wide variety of purposes including flood control, agriculture and ritual while a system of overflows and bypasses carried surplus water away to the lake, the Tonle Sap, to the south. The network ha…
Impact of the Mekong River Flow Alteration on the Tonle Sap Flood Pulse
Rapid development in the upper reaches of the Mekong River, in the form of construction of large hydropower dams and reservoirs, large irrigation schemes, and rapid urban development, is putting water resources under stress. Recent studies have concluded that these developments will lead to flow alterations in the Mekong River. These flow alterations would threaten the sensitive ecosystems downstream, particularly Tonle Sap River, Tonle Sap Lake,…
Feeding ten billion people is possible within four terrestrial planetary boundaries
Towards a revised planetary boundary for consumptive freshwater use
Sediment
It has been claimed that Tonle Sap Lake is rapidly filling with sediment as a result of increasing sediment yields from the catchment. Infilling of the lake basin would have serious implications for the magnitude of flooding in central Cambodia and the Mekong Delta region and threaten the lake's unique ecosystem. In this article, we synthesize the results of radiocarbon dating of sediment cores and hydrodynamic modeling results to provide an empi…
World's human migration patterns in 2000-2019 unveiled by high-resolution data
Despite being a topical issue in public debate and on the political agenda for many countries, a global-scale, high-resolution quantification of migration and its major drivers for the recent decades remained missing. We created a global dataset of annual net migration between 2000 and 2019 (~10 km grid, covering the areas of 216 countries or sovereign states), based on reported and downscaled subnational birth (2,555 administrative units) and de…
Increasing dependence of lowland populations on mountain water resources
Changing mechanism of global water scarcity events
The development of the water management system of Angkor
International audience
Spatial Variation in Seasonal Water Poverty Index for Laos
Mekong at the Crossroads
The Mekong region is undergoing rapid transitions, socially, economically, and environmentally. Economies are stabilizing after the political turbulence of the last several decades, and development pressures as well as ambitions are vast. Water is related to these social, economic, and environmental changes in many ways and in a very profound manner. This article summarizes the approach and major conclusions of the research project title "Integra…
Managing flood risks in the Mekong Delta
Climate change and accelerating socioeconomic developments increasingly challenge flood-risk management in the Vietnamese Mekong River Delta-a typical large, economically dynamic and highly vulnerable delta. This study identifies and addresses the emerging challenges for flood-risk management. Furthermore, we identify and analyse response solutions, focusing on meaningful configurations of the individual solutions and how they can be tailored to …
Mekong at the Crossroads
Quantifying Earth system interactions for sustainable food production via expert elicitation
Several safe boundaries of critical Earth system processes have already been crossed due to human perturbations; not accounting for their interactions may further narrow the safe operating space for humanity. Using expert knowledge elicitation, we explored interactions among seven variables representing Earth system processes relevant to food production, identifying many interactions little explored in Earth system literature. We found that green…
Bringing it all together
Riverbank changes along the Mekong River
The development of the water management system of Angkor
International audience
Impact of the Mekong River Flow Alteration on the Tonle Sap Flood Pulse
Rapid development in the upper reaches of the Mekong River, in the form of construction of large hydropower dams and reservoirs, large irrigation schemes, and rapid urban development, is putting water resources under stress. Recent studies have concluded that these developments will lead to flow alterations in the Mekong River. These flow alterations would threaten the sensitive ecosystems downstream, particularly Tonle Sap River, Tonle Sap Lake,…
Sediment
It has been claimed that Tonle Sap Lake is rapidly filling with sediment as a result of increasing sediment yields from the catchment. Infilling of the lake basin would have serious implications for the magnitude of flooding in central Cambodia and the Mekong Delta region and threaten the lake's unique ecosystem. In this article, we synthesize the results of radiocarbon dating of sediment cores and hydrodynamic modeling results to provide an empi…
Mekong at the Crossroads
The Mekong region is undergoing rapid transitions, socially, economically, and environmentally. Economies are stabilizing after the political turbulence of the last several decades, and development pressures as well as ambitions are vast. Water is related to these social, economic, and environmental changes in many ways and in a very profound manner. This article summarizes the approach and major conclusions of the research project title "Integra…
The water management network of Angkor, Cambodia
Meticulous survey of the banks, channels and reservoirs at Angkor shows them to have been part of a large scale water management network instigated in the ninth century AD. Water collected from the hills was stored and could have been distributed for a wide variety of purposes including flood control, agriculture and ritual while a system of overflows and bypasses carried surplus water away to the lake, the Tonle Sap, to the south. The network ha…
Is physical water scarcity a new phenomenon? Global assessment of water shortage over the last two millennia
In this letter we analyse the temporal development of physical population-driven water scarcity, i.e. water shortage, over the period 0 AD to 2005 AD. This was done using population data derived from the HYDE dataset, and water resource availability based on the WaterGAP model results for the period 1961-90. Changes in historical water resources availability were simulated with the STREAM model, forced by climate output data of the ECBilt-CLIO-VE…
Lost food, wasted resources
Reducing food losses and waste is considered to be one of the most promising measures to improve food security in the coming decades. Food losses also affect our use of resources, such as freshwater, cropland, and fertilisers. In this paper we estimate the global food supply losses due to lost and wasted food crops, and the resources used to produce them. We also quantify the potential food supply and resource savings that could be made by reduci…
Mekong at the Crossroads
From Food Insufficiency towards Trade Dependency
Achieving global food security is one of the major challenges of the coming decades. In order to tackle future food security challenges we must understand the past. This study presents a historical analysis of global food availability, one of the key elements of food security. By calculating national level dietary energy supply and production for nine time steps during 1965-2005 we classify countries based on their food availability, food self-su…
Towards a revised planetary boundary for consumptive freshwater use
Diet change—a solution to reduce water use
VK: T20702
Observed changes in the water flow at Chiang Saen in the lower Mekong
Changing mechanism of global water scarcity events
Reserves and trade jointly determine exposure to food supply shocks
While a growing proportion of global food consumption is obtained through international trade, there is an ongoing debate on whether this increased reliance on trade benefits or hinders food security, and specifically, the ability of global food systems to absorb shocks due to local or regional losses of production. This paper introduces a model that simulates the short-term response to a food supply shock originating in a single country, which i…
Water stress in global transboundary river basins
Growing population and water demand have increased pressure on water resources in various parts of the globe, including many transboundary river basins. While the impacts of upstream water use on downstream water availability have been analysed in many of these international river basins, this has not been systematically done at the global scale using coherent and comparable datasets. In this study, we aim to assess the change in downstream water…
Causes and trends of water scarcity in food production
The insufficiency of water resources to meet the needs of food production is a pressing issue that is likely to increase in importance in the future. Improved understanding of historical developments can provide a basis for addressing future challenges. In this study we analyse how hydroclimatic variation, cropland expansion and evolving agricultural practices have influenced the potential for food self-sufficiency within the last century. We con…
Past and present biophysical redundancy of countries as a buffer to changes in food supply
Spatially diverse trends in population growth, climate change, industrialization, urbanization and \neconomic development are expected to change future food supply and demand. These changes may \naffect the suitability of land for food production, implying elevated risks especially for resourceconstrained, \nfood-importing countries. We present the evolution of biophysical redundancy for \nagricultural production at country level, from 1992 to 20…
Over the hills and further away from coast
Proximity to the coast and elevation are important geographical considerations for human settlement. Little is known, however, about how spatial variation in these factors exactly relates to human settlements and activities, and how this has developed over time. Such knowledge is important for identifying vulnerable regions that are at risk from phenomena such as food shortages and water stress. Human activities are a key driving force in global …
Water scarcity assessments in the past, present, and future
Water scarcity has become a major constraint to socio‐economic development and a threat to livelihood in increasing parts of the world. Since the late 1980s, water scarcity research has attracted much political and public attention. We here review a variety of indicators that have been developed to capture different characteristics of water scarcity. Population, water availability, and water use are the key elements of these indicators. Most of t…
Resilience in the global food system
Ensuring food security requires food production and distribution systems function throughout disruptions. Understanding the factors that contribute to the global food system's ability to respond and adapt to such disruptions (i.e. resilience) is critical for understanding the long-term sustainability of human populations. Variable impacts of production shocks on food supply between countries indicate a need for national-scale resilience indicator…
Bringing it all together
Spatial Variation in Seasonal Water Poverty Index for Laos
Gridded global datasets for Gross Domestic Product and Human Development Index over 1990–2015
An increasing amount of high-resolution global spatial data are available, and used for various assessments. However, key economic and human development indicators are still mainly provided only at national level, and downscaled by users for gridded spatial analyses. Instead, it would be beneficial to adopt data for sub-national administrative units where available, supplemented by national data where necessary. To this end, we present gap-filled…
Greenhouse gas emissions of hydropower in the Mekong River Basin
The Mekong River Basin in Southeast Asia is undergoing extensive hydropower development, but the magnitudes of related greenhouse gas emissions (GHG) are not well known. We provide the first screening of GHG emissions of 141 existing and planned reservoirs in the basin, with a focus on atmospheric gross emissions through the reservoir water surface. The emissions were estimated using statistical models that are based on global emission measuremen…
Geography (34 obras) · Environmental Science (30 obras) · Ecology (26 obras) · Economics (20 obras) · Agriculture (18 obras) · Biology (16 obras) · Population (16 obras) · Natural resource economics (15 obras) · Food security (14 obras) · Environmental resource management (12 obras)