Eleanor M Harris Profile picture
Oct 1, 2021 13 tweets 5 min read Read on X
This is a really important insight by @andyheald on how restocking figures can give a clearer idea of how our woodlands are really expanding and changing. Let me try to visualise and explain it... 1/ Image
🌲 It's rare for broadleaf to be felled and restocked, so restocking can be assumed to be on former conifer.
🌲 Much conifer restocking isn't grant-funded, so its statistics aren't reliable, but replacing it with broadleaf often is. 2/
So 'broadleaf restocking' represents broadleaf woodland creation, over and above what's in the 'new woodland' statistics, but on former conifer instead of former open land. 3/
🌳We can add broadleaf restock to new woodland to get total increase in broadleaf area,
🌲And subtract broadleaf restock from new conifer planting to get net increase (or decrease) in conifer area. 4/
So we can see:
🌳In England and Wales, broadleaf woodland increased significantly more than the 'new woodland' statistics tell you;
🌲While conifer area decreased by just over 1000 hectares. 5/ Image
In Scotland, both types of woodland expanded, but broadleaf accounted for over half (54%) of net expansion, not the 35% often quoted. ImageImage
Across the UK as a whole, conifers (usually for wood production🏗️) only accounted for 30% of net expansion, the vast majority was broadleaf (usually for wildlife/amenity🐾). 7/ ImageImage
Why are broadleaves replacing conifers? Good reasons!
🌳Restoring Plantations on Ancient Woodland - where conifers historically replaced broadleaves,
🌳Restructuring - diversifying old conifer plantations with native trees at harvest, to enhance the whole forest for wildlife.
Why is it concerning?
Later in Forestry Statistics we read that the UK remains the second biggest net importer of wood products in the world, after China, and imports 80% of the wood products we need. Yet England and Wales are reducing their timber producting capacity. /9 ImageImage
We also read in Forestry Statistics that carbon sequestration by the UK's forests is projected to fall.

We are not planting as many conifers - which capture carbon faster and produce the timber we need - as we might have thought - and as we need. /10 Image
Conclusion: It's vital we delve beyond headlines to understand how our forests are changing. Native broadleaves are replacing conifers for good reason, but it's vital they're compensated, by prioritising new conifers on suitable ground, for timber, carbon, and farm income. 11/11 Image
Full link to @Forest_Research's Forestry Statistics 2021, graphs, explanatory text, data downloads for you to play with, can be found here: forestresearch.gov.uk/tools-and-reso… Image

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More from @eleanormharris

Apr 18, 2023
A robust tradeable natural capital unit (carbon offset, nature credit) possesses:

🔴Monitoring, reporting, verification (MRV)
🟡Permanence
🟢Additionality
🔵Hermeticality
galbraithgroup.com/insights-news/… Image
🔴MRV
This is why you need metrics, codes, and auditors. James and I are currently on the sharp end of Woodland Carbon Code auditing, and are wearily conscious of how rigorous it is.
🟡Permanence
Easy for an 'avoidance' offset: if in 2023 you protect a peatland from degradation, or displace coal with solar, that's off the 2023 record for ever. But if you grow trees, or enhance soil and in 2030 they burn down or erode - that carbon's back on your books.
Read 7 tweets
Apr 17, 2023
One of our most important habitat indicators, the @_BTO bird index, has recently been updated. I'm pleased to see that UK and England data are now disagreggated. The picture shows no room for complacency. 🧵 ImageImage
Woodland birds🌲🌳have seen long decline in England, stabilising slightly. They enjoyed long growth in Scotland (green line) but recently declined.

What are the causes? Creating? Harvesting? Native management? Woodland moves slowly, and intervention impacts over decades. ImageImage
Farmland🌽🚜birds haven't seen the crash in Scotland that they have in England - but is that because there has been less intensification, or for other reasons - like fewer farmland birds to start with? ImageImage
Read 6 tweets
Feb 8, 2023
Today 8 February is the birthday (the 204th) of my favourite philosopher John Ruskin. It's hard to articulate the scale of the influence he's had on my life - never mind society - but here's an appropriately chaotic thread to try. 🧵
I discovered Ruskin visiting his museum-home Brantwood in my early 20s. I noted the famous quotes, haunted the gardens with my sketchbook, bought a cheap paperback edition of selected writings in the shop. Here was someone telling the truth across the centuries to me.
For many years after that, I worked to see the world like Ruskin. I read his writings - but didn't study them. I was too busy looking and sketching like Ruskin; trying to write in the captivating style of Ruskin. I aspired to be a polymath like Ruskin.
Read 18 tweets
Jan 1, 2023
How could you be happier, healthier, wealthier and above all greener? I spend a lot of time thinking about a better relationship with material things - so here are my top lifestyle tips for 2023... 🧵 #Resolutions
1. Get a hot water bottle. Instantly turn any slightly chilly situation into a cozy delicious one. I'm always amazed to find how many people think they're historic artefacts.
2. Turn some of your lawn into a flower bed/ vegetable patch. Too many benefits of this to yourself and nature to fit in a tweet.
Read 24 tweets
Dec 10, 2022
I look like a chartered forester! It's been a six year process to pass my @TheICF entry, but I'm now Dr Eleanor Harris MICFor.
Why did I do it? I started for reasons of confidence and identity: as a historian and environmentalist who has never wielded a chainsaw or successfully shot a deer, I wanted to be able to demonstrate I belonged in this tribe. But it turned out much more substantive 2/
A professional qualification is completely different from a PhD. The work record is just "doing your job" - but having to categorise it and have it signed off by your manager for 3 years really makes you consider your skills and what you are competent in (and what you aren't). 3/
Read 11 tweets
Aug 4, 2022
The news of the proposed closure of BSW's smallest and oldest mill is sad news, and should get the cogs turning in the brains of anyone interested in the low-carbon economy. 1/ strathspey-herald.co.uk/news/blow-to-4…
It's no surprise- without major investment it struggles to compete on efficiency with bigger and more modern mills; but as an industrial softwood mill it doesn't appeal to the artisan wood user market. Over the years the timber industry has developed a big hole in the middle. 2/
Does it matter? Yes - 40 people's jobs are on the line today. 👱🏽👨‍🦳👨‍🦱🧔🏻👱🏻‍♀️🧑‍🦰👩🏼‍🦲 But I think it goes deeper than that. 3/
Read 8 tweets

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