Conservation is the careful management of change
it’s time for wood
Rob Jarman Head of Environmental Practices National Trust firstname.lastname@example.org
Alfriston Clergy House 1895
Alfriston Clergy House 1995
Reducing our environmental footprint
Doing more whilst using less
Our „environmental footprint‟
• • • • • Energy Water Carbon Materials, waste Compliance
– Water – Sewerage – Fuel & oil stores
• reduce our emissions (CO2 and methane) • increase our capture and storage of carbon – in land, biomass and structures • carbon stewardship – Wallington pilot • peatlands • soils • wood • Country house technologies…
Typical woodland carbon dynamics
Product displacement - spoons
W o o d en Spoon S tain less S teel Spoon P lastic Spoon
E nergy required (M J) CO2 em issions (g C O 2 ) P otential em issions saved
0 .2 17 g CO2 % -
5 .9 460 443 96
6 .3 200 183 92
Non-compliant oil tanks on NT properties
• • • • • • • • • • • • • • • • • • • • • • • • • •
Biomass (woodchip/pellet/log) Boilers: 25 Sudbury Hall [mansion/vis facils] Dudmaston [estate office] Croome Park [visitor recep/tea room] Upton House [holiday cottage] Brownsea [activity centre] Borrowdale [Bowe Barn estate base] Duddon [Low Hollins House] Malham [Mount Pleasant Farm] Gibson Mill [info centre] Scotney Castle [mansion/vis facils] Greenway Penrose [estate office/hol cott] Arlington [Coombeshead farm] N Devon [East Titchbury Farm] Bedfordshire [Chilterns Gateway centre] Sheringham [visitor centre] Westley Bottom [regional office] Dinefwr [accomm] Dinas [offices/accomm] Hafod y Llan [offices] Pontbrynmydyr [holiday cottage] Gilfach Goch [basecamp] Penlanwen (holiday cottage) Cefngaros (holiday cottage) Mathry (wardens base)
EM WM WM WM WX NW NW Y&NE Y&NE SE D&C D&C D&C D&C EE [not NT?] EE EE Wales Wales Wales Wales Wales Wales Wales Wales
Penrose estate woodfuel
Gibson Mill power station solar thermal & PV on listed building
The chimney now serves the log fired boiler – the mill pond serves the hydro-electric generators
60kW output downdraught log boiler with hopper feed to supply 1200litre stainless steel accumulator tank
Stourhead timber, sawn and strength graded, for use in the restoration of Barrington Model Farm Buildings, without any loss of custody, for FSC purposes
“We were looking to source the timber from NT High Peak estate, but were unable to obtain in time”…
• all the wood used was FSC certified
• Shingles were From CSSB Cedar Shake and Shingle Bureau Supplied by Rawnsley Woodland Products, Wadebridge Cornwall • Structural timbers and larch cladding provided by Arnold Lavers, Chesterfield; and Timber Specialists, Sheffield.
SUSTAINABLE USE OF WOOD
• Wood products from reclaimed and/or recycled sources will be preferred to new wood products when appropriate. • All new wood and wood products to be used in NT operations/retailing must come from certified Forest Stewardship Council (FSC) or equivalent sources.
• NT estate-grown wood will be preferred to other sources (all NT woodlands are FSC certified).
• NT wood energy schemes will be based primarily on properties which can provide their own wood (security of supply) • Locally grown FSC/equivalent certified wood will be preferred, to avoid transport impacts.
• Use of hardwoods grown in the UK, i.e. indigenous species and long established species such as sweet chestnut and sycamore, will be promoted. • Use of durable softwoods grown in the UK will be promoted for construction projects. • Imported wood will only be used when there is no viable UK-grown alternative.
• New wood supplied from rare or declining species or forests will not be used other than in the most exceptional circumstances e.g. restoration of rare joinery etc.
• All wood products used by the NT must have been processed in such a way as to minimise energy use, pollution and waste. • Wood products used by the NT must be capable of being re-used or recycled i.e. not have been treated with toxic/hazardous chemicals such as CCA (unless absolutely necessary), not glued or not nailed in ways that would prevent re-use. • Imaginative use of wood for solid and/or processed products will be promoted, as alternative to artificial/highly processed materials.
• • • • • • • • • • • • • Regional wood strategies – adaptation compliant Stock maps (Plans of Ops!!) NT Conservation Plans Site sensitivities – +/- constraints = resource mapping Out-turn forecasts – primary + by-products Product displacement – procurement skills/info Internal trading – within/between estates/regions Energy strategies, case studies, trusted info Skills & training – specs, management, fuel quality Plant & equipment – technol innovation, maintenance Contractors, farm tenants… Approved plans, certification, monitoring, reporting Green Dragon EMS…
Wallington Carbon Footprint Project
Optimising Carbon storage by land management
Supervisor: Dr. Fred Worrall
Wallington Estate: 15 farm tenancies + Harwood Forest
Harwood Head fairnley Dyke Head Rothley West Shield Fallowlees Donkin Rigg Greenleighton Harwood Forest
Ralph Shield Gallows Hill Catcherside Chesters Tuthill Rugley Walls Newbiggen Elf Hills Prior Hall Broom House WALD EXTERNAL BOUNDARY_region
Moorland pasture Lowland arable
Initial land management suggestions:
Convert arable to pasture
Increase area of set-aside
Introduce field margins Allow improved pasture to revert to rough pasture Increase area of forestry (on mineral soils)
But…all of these are not realistic
How can we increase carbon store in arable soils? How can we increase carbon store in improved pasture? How can we limit loss of carbon from rough pasture? There is a lot of variation in TOC within land-uses: Land management change rather than land-use change?
Current work and Year 2 : Trials
Current: Identification of target sites for further investigation
Year 2: Combination of field and lab trials;
Possible trials: Investigate target sites
Field: Monitor flux from Greenleighton mire under different land-uses
Field: Monitor impact of Short-rotation Coppice plantations Lab: Monitor impact of adding biochar to soils Field: Monitor the impact of grazing on mineral soils
Monitoring of Peat carbon flux:
Currently ungrazed: Monitor CO2 flux and water table depth
Currently forested: Monitor CO2 flux and water table depth
8 ½ hectares due to be deforested: Monitor CO2 flux and water table depth Introduce grazing?? :Monitor CO2 flux and water table depth
Biochar lab trials:
Pyrolysis: biomass heated in absence of oxygen: produces Char (Biochar)
Biochar: Used as a soil ammendment Biochar: More stable than unchared biomass. (less decomposition)
Shown to enhance plant growth
(more photosynthesis) Increases crop yields Lower fertiliser input needed
Growth of bioenergy crops for biofuel: Offsets fossil fuel use Sequesters C in biomass
Char improves crop yield, therefore increases soil carbon sequestration Char stored in soil for 1000’s of years
Short- rotation Coppice plantations.
Monitoring of soil carbon flux under stands of varying ages and adjacent unplanted arable land. SRC grown and used as bioenergy. C emitted is carbon that has previously been sequestered, therefore carbon neutral Biochar (stable C) can be produced in the process Can SRC be planted on arable or improved pasture land and increase soil carbon stocks? Contacts made with Newcastle University to monitor plantations at Cockle Park.