Erik Van den Elsen

Erik Van den Elsen
Wageningen University & Research | WUR · Soil Sciences

About

413
Publications
13,907
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1,351
Citations
Citations since 2016
7 Research Items
404 Citations
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20162017201820192020202120220204060
20162017201820192020202120220204060
20162017201820192020202120220204060

Publications

Publications (413)
Preprint
Full-text available
PurposeIncreasing wildfire frequency in Mediterranean-basin together with drought periods expansion could affect plant-soil-water dynamics processes. The goal is to assess the effects of wildfire frequency on plant recovery, soil properties, soil moisture content (SMC; %) and effective soil water content (ESWC; %) during the first hydrological year...
Article
Full-text available
One of the most challenging issues in Mediterranean ecosystems to date has been to understand the emergence of discontinuous changes or catastrophic shifts. In the era of the 2030 Sustainable Development Goals, which encompass ideas around Land Degradation Neutrality, advancing this understanding has become even more critical and urgent. The aim of...
Article
Full-text available
Under arid conditions, where water availability is the limiting factor for plant survival, water balance models can be used to explain vegetation dynamics. [...]
Poster
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Under arid conditions, where water availability is the limiting factor for plant survival, water balance models can be used to explain vegetation dynamics. Here we analyze for the first time measurements from the precipitation exclusion experiment of the CASCADE Project [1] study site of Messara Valley, in Crete, Greece. The site is located in a ma...
Conference Paper
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Drylands cover about 31% of the European landmass, and are the home of around 25% of its population, thereby making the lives of a substantial part of the European population directly or indirectly dependent on the wellbeing of these drylands. Research done by the European Environmental Agency (EEA), shows that especially the area around the Medite...
Article
Full-text available
In this study we examined the efficiency of a kaolinite clayey soil to mitigate water repellency of a sandy soil with olive trees. The treatment was applied to the soil zone below the tree canopy, which displayed the highest degree of water repellency (average Water Drop Penetration Time (WDPT) value = 820 s). Both dry (incorporated onto the top so...
Article
The averaging behavior of two capacitance water content sensors in nonuniform wetted sand samples was assessed and compared with the averaging behavior of a time domain reflectometry (TDR) water content sensor in identical samples. Four different nonuniform wetting situations were assessed. In one of the four experiments, the orientation of the cap...
Article
Full-text available
It has become increasingly clear that desertification can only be tackled through amulti-disciplinary approach that not only involves scientists but also stakeholders. In the DESIRE project such an approach was taken. As a first step, a conceptual framework was developed inwhich the factors and processes thatmay lead to land degradation and deserti...
Article
In the last twenty years the advent of the internet has made it much easier to share the results of scientific research with a wider range of audiences. Where once there were only scientific journals and books, it is now possible to deliver messages and dissemination products instantly, by email or other media, to huge circulation lists; thereby al...
Article
Full-text available
Fire can considerably change hydrological processes, increasing the risk of extreme flooding and erosion events. Although hydrological processes are largely affected by scale, catchment-scale studies on the hydrological impact of fire in Europe are scarce, and nested approaches are rarely used. We performed a catchment-scale experimental fire to im...
Article
Full-text available
Fire can considerably change hydrological processes, increasing the risk of extreme flooding and erosion events. Although hydrological processes are largely affected by scale, catchment-scale studies on the hydrological impact of fire are scarce, and nested approaches are rarely used. Taking a unique approach, we performed a catchment-scale experim...
Article
Full-text available
Advances in knowledge and technologies during the last decades have led to considerable water savings in many irrigated areas around the world. These have often been achieved through modern water supply methodologies involving, for example, advanced drip and sprinkler irrigation. These methods, however, are costly and socio-economically not always...
Article
Full-text available
Project co-funded by the European Commission within the Sixth Framework Programme (2002-2006) Dissemination Level PU Public PU PP Restricted to other programme participants (including the Commission Services) RE Restricted to a group specified by the consortium (including the Commission Services) CO Confidential, only for members of the consortium...
Article
Full-text available
In arid and semiarid zones of the Mediterranean regions a shortage of fresh water resources constitutes some time dramatic problem. In these regions with growing population and the scarce of rainfall irregularity in time during growing season an efficient use of water irrigation became a main challenge for future extensive agriculture development....
Article
Full-text available
A new stand-alone wireless embedded network system has been developed recently for continuous monitoring of soil water contents at multiple depths. This paper presents information on the technical aspects of the system, including the applied sensor technology, the wireless communication protocols, the gateway station for data collection, and data t...
Article
In irrigated areas in the New Independent States (NIS) and southern European States, inefficient use of conventional water resources occurs through incomplete wetting of soils, which causes accelerated runoff and preferential flow, and also through excessive evaporation associated with unhindered capillary rise. Furthermore, a largely unexploited p...
Article
Nowadays more and more measurement sites are installed in the field to gain insight in the process of 2-dimensional moisture flow in topsoils in dependence of the weather conditions. As these measurements yield a large amount of data, visualization is essential and therefore a software package was developed consisting of several tools to process th...
Article
The Himalayan region is an ecologically fragile region, in which degradation of the environment is a serious threat. Degradation and hydrology are linked, since rainfall and runoff influence erosion, and soil moisture content influences ecosystems and plant growth. Thus, it is important to get insight into the hydrological system in order to combat...
Article
Praktisch alle golfbanen in de wereld zijn voorzien van een meer of minder geavanceerde beregeningsinstallatie om in tijden van neerslagtekort extra water toe te dienen aan de baan waar dat nodig is. De meeste banen in Nederland zijn voorzien van pop-up sprinklersystemen die radiaal sproeien, of soms ook sectoraal zijn aan te sturen middels de comp...
Article
Er is in Nederland vooral wateroverlast. De drainagecapaciteit op golfbanen is dan ook meestal wel op orde. Maar wat te doen in een droge periode als er strenge regels voor het waterverbruik gelden? Dan is schuim een oplossing
Article
De opbouw van greens en tees bestaat veelal uit gemiddeld tot grofkorrelig zand met een laag organische stofgehalte. Dit relatieve grove materiaal zorgt voor voldoende drainagecapaciteit in natte periodes, maar heeft als groot nadeel een gering vochtvasthoudend vermogen. Vooral in Zuid-Europese landen waar water schaars is, kan dit leiden tot een o...
Article
Full-text available
A single gully system was selected in a small agricultural watershed on the Loess Plateau of China with the objective of measuring and then simulating water and sediment transport and defining alternative land uses to reduce discharge and soil loss. The gully had a total length of about 40 m and was about 30 m wide. The watershed feeding the gully...
Article
An automatic monitoring system was constructed to intensively study the water–profile–runoff interactions during rain events, of a hillslope gully. The system was installed on the Loess plateau in the Shaanxi province in northern China. The primary goal was to obtain a better understanding of soil erosion processes in this district to aid in better...
Article
A dam and weir system was constructed to measure the discharge of water and sediment from a selected small catchment on the Loess plateau in China. The aim of the system described here was to collect data on discharge and sediment content during occasional summer storms. These data can be used for calibrating and validating the LISEM erosion model....
Article
Full-text available
The continuous degradation by soil erosion is threatening the agricultural production and thus the livelihoods of many farmers on the Chinese Loess Plateau. In 1997 the EROCHINA project (funded by the European Union and the Dutch Ministry of Agriculture, Nature Management and Fisheries) started with an unique approach to find acceptable and effecti...
Article
Full-text available
An automatic monitoring system was constructed to intensively study the water¿profile¿runoff interactions during rain events, of a hillslope gully. The system was installed on the Loess plateau in the Shaanxi province in northern China. The primary goal was to obtain a better understanding of soil erosion processes in this district to aid in better...
Article
Presentation of an EU funded project, An interdisciplinary approach to analyse the dynamics of forest and soil degradation and to develop a sustainable agro-ecological strategy for fragile Himalayan watersheds. 'Himalayan Degradation'
Article
Full-text available
In het kader van het reductieplan overige broeikasgassen (ROB Landbouw) zijn de mogelijkheden voor het verminderen van de emissie van lachgas (N2O) uit gescheurd en opnieuw ingezaaid grasland bestudeerd. In de periode tussen augustus 2000 en juli 2002zijn door middel van incubatie- en veldproeven de effecten van het tijdstip van scheuren van grasla...
Article
De landbouw kan worden getypeerd met vier ontwikkelingsrichtingen: grootschalige grondgebonden productie, geconcentreerde agroproductieparken, belevingslandbouw en agrarisch natuur- en landschapsbeheer. De richtingen hebben uiteenlopende perspectieven en ruimtelijke effecten: deze worden beschreven. Tevens zijn kaarten opgenomen met kansrijke locat...
Article
The Mount Malindang researches on vegetation and policies, which are carried out in the context of the Biodiversity Research Programme, are transforming to `second-generation research'. They therefore search for new methods as compared to what was done in the `first generation'. The mission in January 2002 focused on this transformation. For the ve...
Article
Full-text available
Gullies are severe stages of water erosion and gully erosion is a very serious problem on the loess plateau of China. So far very few soil erosion models can predict gully erosion. To develop and validate a gully erosion model, it is necessary to understand the relationship between soil moisture and runoff generation that affects the gully erosion....
Article
An automatic monitoring system was constructed to intensively study the water-profile-runoff interactions during rain events, of a representative hillslope gully. The system was installed on the Loess plateau in the Shaanxi province in northern China. The system consisted of 29 TDR sensors that monitored the water content variation in time througho...
Article
Full-text available
Dit rapport is een verslag van het tot stand komen van een database met naamlijst en codering van Nederlandse aquatische organismen. De codering richt zich op de zoete en brakke (semi-)aquatische macrofauna. Ten behoeve van deze categorie van organismen zijn activiteiten beschreven die leiden tot de inhoudelijke invulling van de beoogde database. D...
Article
In dit rapport worden ideeën uit verschillende rapporten over de Groningse Veenkoloniën verzameld en geanalyseerd. De analyse van deze ideeën is met behulp van methodes uit het gedachtegoed van duurzame ruimtelijke ontwikkeling en kwaliteit van de leefomgeving uitgevoerd. Hierbij zijn vier thema's onderscheiden: de kamstad, de wateras, multifunctio...
Article
De Marina Muiderzand, gemeente Almere, is buitendijks gelegen, grenzend aan het Vogelrichtlijngebied IJmeer. Bij de Marina heeft de gemeente Almere drie woontorens gebouwd. Op grond van verspreidingsgegevens van watervogels en gedragswaarnemingen aan watervogels blijkt dat de woontorens geen significant effect hebben op het voorkomen en het gedrag...
Article
"Stellingen" inserted. Thesis (doctoral)--Wageningen Universiteit, 2000. Includes bibliographical references.
Article
Het optimale oogsttijdstip van GPS is in het deegrijpe stadium van de korrel; het drogestofgehalte van de gehele plant ligt dan rond de 40%.
Article
In deze verkennende studie zijn de technische en economische mogelijkheden en beperkingen van de teelt van GPS als vervanging voor maos in de provincie Limburg in kaart gebracht. Hierbij is de gehele provincie in ogenschouw genomen. Er is echter in het bijzonder aandacht besteed aan mogelijkheden op lössgronden in Zuid-Limburg vanwege de erosieprob...
Article
Dit rapport beschrijft de resultaten van de multivariatieanalyse van twee onderzoeken uitgevoerd door het Rijksinstituut voor Kust en Zee. In het Waddenonderzoek zijn sedimenten van zestien plaatsen in de Waddenzee zowel chemisch als biologisch beoordeeld met behulp van chemische metingen en een aantal laboratoriumbiotests in vitro en in vivo. De g...
Article
Full-text available
Presentatie van de eerste resultaten van een belevingsonderzoek van deelnemers die via internet met 3-dimensionale visualisaties aan een boswandeling konden meedoen
Article
In a first part of this study van den Ham reacts to the increased free-market thinking and makes in chapter 1 a plea for continued efforts in active, public socio-spatial development policies in order to contribute to sustainable poverty alleviation in remote areas. This policy should aim at lifting restrictions, both material and socio-cultural, o...
Article
Met het nieuwe stikstofadvies is op veel bedrijven een vermindering van de stikstofbemesting mogelijk van circa 50 kg N/ha met vrijwel behoud van opbrengsten. In 1998 is het nieuwe advies in de praktijk getoetst
Article
The Wageningen international course: some backgrounds on a twelf week course
Article
IntroductionMethane (CH 4 ) is an important greenhouse gas. The concentration of greenhouse gases in the atmosphere has been increasing since pre-industrial times, mainly due to human activities. This increase gives concern, because it may cause global warming due to an enhanced greenhouse effect.In the soil, CH 4 may be produced under anaerobic co...
Article
Field evidence of finger formation and reformation during Successive rain events over an eight months' observation period from June 1994 until January 1995 is presented. Fingered flow pathways were monitored in a no-tilled, grass-covered water repellent sandy field soil using an automated, stand-alone TDR device. Within a 2 m long and 0.7 m deep tr...
Article
Full-text available
Field evidence of finger formation and reformation during Successive rain events over an eight months' observation period from June 1994 until January 1995 is presented. Fingered flow pathways were monitored in a no-tilled, grass-covered water repellent sandy field soil using an automated, stand-alone TDR device. Within a 2 m long and 0.7 m deep tr...
Article
The theoretical and empirical scope of this study thus clarified, an outline of the chapters which follow can now be presented.In Chapter II 1 shall systematically compare Fleck's theories with the approaches adopted by contemporary constructivists. My strategy is partly to use modern forms of constructivism as a foil for extracting relevant and va...
Article
Surface runoff may be generated when the rainfall intensity exceeds the infiltration capacity, or when the soil profile is saturated with water. Indications exist that both types of overland flow may occur in hilly agricultural loess regions. Here, for a loessial hillslope under maize in the southern part of The Netherlands, it was shown, with pres...