Ulf Helldén
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- 2013
-
Mark
Assessing woody biomass in African tropical savannahs by multiscale remote sensing
(
- Contribution to journal › Article
- 2012
-
Mark
Greenness in semi-arid areas across the globe 1981-2007 - an Earth Observing Satellite based analysis of trends and drivers
(
- Contribution to journal › Article
- 2008
-
Mark
A coupled human-environment model for desertification simulation and impact studies
(
- Contribution to journal › Article
-
Mark
LU-CDM, A Conceptual Model of Desertification
2008) In FP6, DeSurvey IP, Sub-deliverable 1.3.3.8 (1), Deliverables data base(
- Book/Report › Report
-
Mark
LU-CDM, A Conceptual Model of Desertification
2008) Wengen Workshop on Global Change Research: Edition 2007; Climate Change and Desertification: Monitoring, Modelling and Forecasting(
- Contribution to conference › Paper, not in proceeding
-
Mark
Desertification-A global monitoring approach
2008) Wengen Workshop on Global Change Research: Edition 2007; Climate Change and Desertification: Monitoring, Modelling and Forecasting(
- Contribution to conference › Paper, not in proceeding
-
Mark
Regional desertification: A global synthesis
(
- Contribution to journal › Article
- 2007
-
Mark
Long term NOAA-AVHRR GIMMS-NDVI - rainfall relationships and trends 1981 to 2003 for entire DeSurvey area of interest
2007) In FP6, DeSurvey IP, Sub-deliverable 1.5.1.17 (1), Deliverables data base(
- Book/Report › Report
- 2006
-
Mark
Deliverable 1.3.3.1.: Desertification syndromes for the target & validation DeSurvey areas
2006) In EU,FP6, DeSurvey IP, Deliverable 1.3.3.1, Deliverables data base(
- Book/Report › Report
- 2005
-
Mark
Remote Sensing and Geomatics Strategies for Desertification and Land Degradation Monitoring and Assessment
2005) Local & Regional Desertification Indicators in a Global Perspective.-AIDCCD-Active exchange of experience on indicators and development of prespectives in the context of UNCCD p.113-124(
- Chapter in Book/Report/Conference proceeding › Paper in conference proceeding
-
Mark
CASE STUDIES OF DESERTIFICATION MONITORING. -A DISCUSSION OF EU INITIATIVES
2005) Local & Regional Desertification Indicators in a Global Perspective.-AIDCCD-Active exchange of experience on indicators and development of prespectives in the context of UNCCD p.195-203(
- Chapter in Book/Report/Conference proceeding › Paper in conference proceeding
- 2003
-
Mark
Desertification and Theories of Desertification Control: A discussion of Chinese and European concepts
(
- Chapter in Book/Report/Conference proceeding › Paper in conference proceeding
- 2001
-
Mark
Climate Change and Land Degradation in Iceland
2001) p.78-79(
- Chapter in Book/Report/Conference proceeding › Book chapter
- 1999
-
Mark
Desertification and global climate change – Little Ice Age desertification in Iceland?
1999) 2nd International Conference on Land Degradation; International Union of Soil Sciences (IUSS)(
- Chapter in Book/Report/Conference proceeding › Paper in conference proceeding
-
Mark
Land degradation in NE Iceland : an assessment of extent, causes and consequences
1999) In Lund electronic reports in physical geography(
- Book/Report › Report
- 1998
-
Mark
Comments on dryland degradation assessment; In:Drylands-Sustainable Use of Rangelands into the Twenty-first Century
1998) p.25-30(
- Chapter in Book/Report/Conference proceeding › Book chapter
- 1995
-
Mark
Ökenspridning-ett lokalt problem?
1995) In Naturvetenskapliga forskningsrådet. Årsbok 1995 “Det evigt rinnande vattnet”. ss 131-142. p.131-142(
- Contribution to journal › Article
- 1994
-
Mark
Desertification, fact or fiction?
1994) In Our Planet. -The United Nations Environment Programme Magazine for Sustainable Development, 6(No. 5). p.33-33(
- Contribution to journal › Article
- 1993
-
Mark
Land Cover Conversion, Land Degradation and Desertification in Africa and Asian Drylands-An Assessment of Regional and Continental Change
1993) Int. Symp. on Remote Sensing in Arid and Semi-arid Regions-(
- Chapter in Book/Report/Conference proceeding › Paper in conference proceeding
-
Mark
An Approach to Monitoring and Assessment for Planning and Management in African Drylands
1993) Int. Symp. on "Natural Resource Inventory and Sustainable Management of Forested Areas in Africa" p.9-14(
- Chapter in Book/Report/Conference proceeding › Paper in conference proceeding
- 1992
-
Mark
Estimation of the forest cover and its changes over time by means of remote sensing in semi-arid Africa.
1992) p.47-68(
- Chapter in Book/Report/Conference proceeding › Book chapter
- 1991
-
Mark
Desertification-Time for an Assessment?
(
- Contribution to journal › Article
-
Mark
Rapport från ett internationellt möte om ökenspridning
(
- Contribution to journal › Article
- 1988
-
Mark
National Drought Impact Monitoring- A NOAA NDVI and precipitation data study of Ethiopia
1988) In Lund Studies in Geography, Ser. C. General, Mathematical and Regional Geography(
- Book/Report › Report