Ulf Helldén
Impact in
- Global and Planetary Change top 2%
- Land Use and Ecosystem Services
- Plant Water Relations and Carbon Dynamics
- Climate variability and models
- Forestry top 2%
Papers in
- Ecology 13
- Remote Sensing in Agriculture 11
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- Science and Climate Studies 3
- Co-authors
- Christian Tøttrup (2 shared papers)Howard E. Epstein (1 shared paper)Robert J. Scholes (1 shared paper)Stephen D. Prince (1 shared paper)Lennart Olsson (1 shared paper)José M. Paruelo (1 shared paper)Jonathan Seaquist (1 shared paper)Kjeld Rasmussen (1 shared paper)
- Journals
- Global and Planetary Change (2 papers)Geografiska Annaler Series A Physical Geography (2 papers)International Journal of Remote Sensing (1 paper)Norsk Geografisk Tidsskrift - Norwegian Journal of Geography (1 paper)Advances in Space Research (1 paper)
- Partner nations
- SwedenUnited StatesDenmark
In The Last Decade
Ulf Helldén
26 papers receiving 1.4k citations
Ulf Helldén's Hit Papers
Peers
Comparison fields: 5 of 69
- Global and Planetary Change 941
- Forestry 127
- Ecology 782
- Ecological Modeling 123
- Management, Monitoring, Policy and Law 337
Countries citing papers authored by Ulf Helldén
This map shows the geographic impact of Ulf Helldén's research. It shows the number of citations coming from papers published by authors working in each country. You can also color the map by specialization and compare the number of citations received by Ulf Helldén with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites Ulf Helldén more than expected).
Fields of papers citing papers by Ulf Helldén
This network shows the impact of papers produced by Ulf Helldén. Nodes represent research fields, and links connect fields that are likely to share authors. Colored nodes show fields that tend to cite the papers produced by Ulf Helldén. The network helps show where Ulf Helldén may publish in the future.
Co-authors
The 25 scholars most cited alongside Ulf Helldén, linked wherever they have co-authored with each other. Click a name or a connecting line to browse the papers they share.
All Works
Showing the 20 most-cited of 28 papers — load more, or switch the sort, to bring in the rest.
| # | Work | ||
|---|---|---|---|
| 1 | Greenness in semi-arid areas across the globe 1981–2007 — an Earth Observing Satellite based analysis of trends and drivers Hit paper breakdown → | 2012 | 685 |
| 2 | 2008 | 279 | |
| 3 | Desertification - time for an assessment? | 1991 | 204 |
| 4 | Desertification monitoring: is the desert encroaching? | 1988 | 54 |
| 5 | 2008 | 48 | |
| 6 | 2013 | 45 | |
| 7 | An assessment of woody biomass, community forests, land use and soil erosion in Ethiopia. A feasibility study on the use of remote sensing and GIS-analysis for planning purposes in developing countries | 1987 | 36 |
| 8 | National Drought Impact Monitoring: a NOAA NDVI and Precipitation Data Study of Ethiopia | 1989 | 26 |
| 9 | Drought impact monitoring. A remote sensing study of desertification in Kordofan, Sudan | 1984 | 24 |
| 10 | A test of landsat-2 imagery and digital data for thematic mapping illustrated by an environmental study in northern Kenya, Lund University | 1980 | 21 |
| 11 | An assessment of woody biomass, community forests, land use and soil erosion in Ethiopia. A feasibility study on the use of remote sensing and GIS [geographical information system]-analysis for planning purposes in developing countries. | 1987 | 16 |
| 12 | Desertification and Theories of Desertification Control: A discussion of Chinese and European concepts | 2003 | 6 |
| 13 | Monitoring land degradation in southern Tunisia: A test of LANDSAT imagery and digital data | 1980 | 5 |
| 14 | Long term NOAA-AVHRR GIMMS-NDVI - rainfall relationships and trends 1981 to 2003 for entire DeSurvey area of interest | 2007 | 4 |
| 15 | Land degradation in NE Iceland : an assessment of extent, causes and consequences | 1999 | 4 |
| 16 | 1973 | 4 | |
| 17 | 1973 | 4 | |
| 18 | Evaluation of Landsat-2 imagery for desertification studies in northern Kordofan, Sudan | 1978 | 3 |
| 19 | LU-CDM, A Conceptual Model of Desertification | 2008 | 2 |
| 20 | The potential of Landsat MSS data for wood resources monitoring : a study in arid and semi-arid environment in Kordofan, the Sudan | 1982 | 2 |
About Ulf Helldén
Ulf Helldén is a scholar working on Ecology, Global and Planetary Change, Management, Monitoring, Policy and Law, Atmospheric Science and Ecology, Evolution, Behavior and Systematics, having authored 28 papers that have together received 1.5k indexed citations. Recurring topics across this work include Remote Sensing in Agriculture (11 papers), Rangeland Management and Livestock Ecology (5 papers), Remote Sensing and Land Use (4 papers), Climate change impacts on agriculture (4 papers), Science and Climate Studies (3 papers), Remote Sensing and LiDAR Applications (3 papers), African Botany and Ecology Studies (3 papers) and Soil and Land Suitability Analysis (3 papers). The work is most often cited by research in Global and Planetary Change (941 citations), Forestry (127 citations), Ecology (782 citations), Ecological Modeling (123 citations) and Management, Monitoring, Policy and Law (337 citations). Ulf Helldén has collaborated with scholars based in Sweden, United States and Denmark. Frequent co-authors include Christian Tøttrup, Howard E. Epstein, Robert J. Scholes, Stephen D. Prince, Lennart Olsson, José M. Paruelo, Jonathan Seaquist, Kjeld Rasmussen, Alberte Bondeau and Christian Schweitzer. Their work appears in journals such as Global and Planetary Change, Geografiska Annaler Series A Physical Geography, International Journal of Remote Sensing, Norsk Geografisk Tidsskrift - Norwegian Journal of Geography and Advances in Space Research.
Rankless uses publication and citation data sourced from OpenAlex, an open and comprehensive bibliographic database. While OpenAlex provides broad and valuable coverage of the global research landscape, it—like all bibliographic datasets—has inherent limitations. These include incomplete records, variations in author disambiguation, differences in journal indexing, and delays in data updates. As a result, some metrics and network relationships displayed in Rankless may not fully capture the entirety of a scholar's output or impact.