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Ronald Rovers
articles with visions, concepts and explorations about sustainability
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landuse

From EROI to EROLI: energy return on Land investment ? 2/2

8 mei 2022admin
landschap

In the agricultural project that I described in my previous contribution [1], which was initially about the EROI, the energy return on energy investment, I subsequently calculated the effects back to land’input’. But then the thought soon arised: would is… Continue Reading →

agriculture, assessment, biobased, biomass, Embodied Land, EROI, EROLI, food, labor, land, landuse, system boundaries

EROI and land use of potato crop – a pilot 1/2

25 april 2022admin
aardappeleters

In a recent project , ‘Verrijkende Landbouw’ ( Enriching Agriculture) [1], I was able to refine the theory and methodology of MAXergy, using Embodied Land as an indicator [2], thanks to a practical pilot. As follows. Agriculture needs to change.… Continue Reading →

agriculture, biomass, Embodied Land, EROI, food, labor, land, landuse, MAXergy

The Bionological House

7 maart 2022admin
treehouses

With vegetables, we’ve been doing it for years: most current vegetables never existed, in an autonomous evolutionary process. We as humans have slowly transformed them so that they grow the way we appreciate them, and want them on our plates.… Continue Reading →

agriculture, architecture, biobased, bionology, building, Embodied Land, future, housing stock, land, landuse, materials, prefab, technology

Carbon storage: the land-time relation 2/2

20 februari 2022admin
1-tree-island-lone-palm-tree-on-small-island-john-lund

There are many ways you can start “accounting” for CO2 (as comments on the previous article also showed), but at the end of the day what matters are absolute CO2 emissions, from whatever activity. And cutting down a tree and… Continue Reading →

agriculture, assessment, biobased, climate, CO2, Embodied Land, forests, future, housing stock, land, landuse, materials, resources

Golf – the decadence in our use of space

5 december 2021admin
golf-coesfeld-gc-duitsland-golfreizen-overzicht-holes

For a new book, I explore the space-time relationship of many human activities, as a measure of our system impact, and to see if there are alternatives that can do with less. Space time in the sense that the conversion… Continue Reading →

Embodied Land, future, land, landuse, policies, society, sports

DELY : Disabled Earth Life Years

9 oktober 2021admin
worm

We can develop beautiful so-called scientific methods to calculate all the effects of our impact, but in the end only two data are relevant: energy and material use, and the rest is derived from that: all emissions, to air or… Continue Reading →

agriculture, assessment, biodiversity, biomass, ecology, future, health, landuse, people, resources, society

The renewal time of all resources- Maxergy 3.0

2 augustus 2021admin
regeneratie-volhoudbaar-landgebruik-2b

Everything is renewable – classification after growth rate – renewal time, flow rate . As a result of some recent projects new insights developed over resources, that any resource is renewed. Its only a matter of time. But that implies… Continue Reading →

agriculture, embodied energy, Embodied Land, exergy, land, landuse, materials, resources, solar energy

Half the agricultural land for biobased materials…

16 mei 2021admin
koolzaad4

Last week I published a letter in the Netherlands, in which I indicated that about 800,000 hectares of land would be needed for the construction of new homes. That’s how it works in a transition: We have to significantly reduce… Continue Reading →

biobased, building, embodied energy, Embodied Land, future, landuse, resources

Land, between heaven and earth

8 februari 2021admin
land-air

It is intriguing how the world fundamentally works, with its cycles, driven mainly by solar energy. Which can be traced back mainly to the yields of land, as I found out earlier. [1,2] (Land that has virtually disappeared from economic… Continue Reading →

agriculture, biobased, biomass, capital, commons, Embodied Land, food, forests, land, landuse, society

land (-potential) as the new money standard

22 november 2020admin
27

Someone suggested recently to think about a new money standard. Well, thats a challenge, so I did. Since money is a virtual unit of trade, not based on any actual value. Not anymore, at least, since we left the barter… Continue Reading →

agriculture, biomass, capital, economy, Embodied Land, future, land, landuse, money, policies, solar energy, value

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Happy New Year 2022 !

Form Follows Fysics - reinventing the built environment (2021)
People vs Resources - restoring a world out of balance (2019)
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most recent blogs

  • A ‘ New Bauhaus’ ? Or Solar Decathlon ?
  • MNB1: 0-CO2 per 2030, MNB2: max 550 kg/m2
  • From EROI to EROLI: energy return on Land investment ? 2/2
  • EROI and land use of potato crop – a pilot 1/2
  • Continue partying, or (CO2) lockdown ?
  • Critical look at graphics illustrations.
  • The Bionological House
  • Carbon storage: the land-time relation 2/2
  • Carbon storage in wood-timber 1/2
  • a CO2 budget for a municipality
  • Environment and climate checklist for journalists
  • Change, back then and now
  • the creating-debtors-theory of money…
  • The future country of the Netherlands
  • Golf – the decadence in our use of space

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