Sri Lanka decision proposal
Tell us what to change or add.
Archived decisions
Open a decision below. Check the area, period, inputs, result and proposed next step.
Use Change example to try different values. Use Data needed to check the fields and sources. The land-use change decision has its own comparison views.
Record your corrections below, then download your answers or print them.
Compare dated forest-class areas within the same mapped extent.
Validation required
Fictional default example · 2025.
What the selected record shows. The recorded Sample matching forest/land-use class area changes from 100 to 90 ha. Net change is -10 ha; supplied gross loss is 18 ha and gross gain is 8 ha.
Next step. Check the matching source records before interpreting the change. Prepare change comparison in the prototype creates a visible, downloadable draft. It is unassigned and not sent.
A mapped class change does not by itself establish clearing or illegal activity.
Net=later−earlier; percentage=100×net/earlier when earlier>0. Matched transitions must reproduce net=gain−loss. Net totals alone do not establish conversion.
Same boundary, definitions, observation basis and adequate map quality are required. Coverage changes and classification error are not proven land-use change. Example boundaries and transitions are fictional.
Other required records: Forest boundaries; class maps; dates; hectares; classification uncertainty.
Calculation appendix
Identify forest inventory plots with missing or unknown structural measurements.
What the selected record shows. 30 plots are known to be uncovered; 5 have unknown coverage. 65% are confirmed covered.
Next step. Check the records behind the uncovered and unknown groups. Prepare coverage follow-up in the prototype creates a visible, downloadable draft. It is unassigned and not sent.
A coverage percentage does not establish measurement quality.
100 × distinct covered eligible units / eligible frame. Known uncovered = frame − covered − unknown.
Count each eligible unit once for the selected service and period. Received messages, attendance, adoption and outcomes are separate measures.
Other required records: Plot frame; measured plots; diameter; height; species; measurement dates.
Check surviving, failed and unvisited members of the original planting cohort.
What the selected record shows. Confirmed survival lower bound: 78 %.
Next step. Check unknown follow-up separately from confirmed survival and failure. Prepare cohort follow-up in the prototype creates a visible, downloadable draft. It is unassigned and not sent.
Unknown follow-up is not death, and replacement plants are a separate cohort.
Lower =100 × known survivors / original cohort. Upper =100 × (known survivors + unknown) / original cohort. Survivors + known failures + unknown = original cohort; replacements do not enter it.
These bounds account for unknown status; they are not statistical confidence intervals. Use actual follow-up dates and distinguish cohort membership from repeated visits.
Other required records: Cohort ID; planted count; surviving count; replacement count; follow-up date.
Identify open forest-disturbance cases past their response date.
What the selected record shows. Open days past due: 29 days. Follow up overdue case.
Next step. Follow up overdue case; confirm the missing condition evidence. Prepare evidence request in the prototype creates a visible, downloadable draft. It is unassigned and not sent.
Days overdue do not determine the disturbance's severity.
Open age = assessment date − received date. Days past due = max(0, assessment date − recorded due date) for open cases. Show documented critical conditions separately.
Example due dates are not legal service standards. Do not alter statutory deadlines by silently subtracting pauses, or infer severity from age alone.
Other required records: Alert ID; location; detection date; verified disturbance; due date; investigator.
Check fire-preparedness evidence and the conditions requiring specialist review.
What the selected record shows. The required evidence is incomplete for this fire preparedness case. The items below identify what must be obtained or reconciled.
Next step. Obtain the missing evidence listed below. Prepare evidence request in the prototype creates a visible, downloadable draft. It is unassigned and not sent.
No fire probability, operational warning or automatic response is produced.
Check each required item and retain its reference. A documented item is not a scientific, legal or institutional approval.
Show the hazard, exposure and verified controls separately. No generic score, probability, diagnosis, site clearance or official warning is derived from a count.
Other required records: Fuel observations; weather; fire history; exposed assets; access; response capacity.
Check reported forest overlap before a field and rights investigation.
What the selected record shows. The supplied overlap is 18 ha within the 75 ha assessed footprint, or 24%. Check the cited boundary and source records before interpreting the overlap.
Next step. Check the matching footprint, source boundary and applicable conditions. Prepare overlap review in the prototype creates a visible, downloadable draft. It is unassigned and not sent.
A supplied overlap does not establish ownership or unlawful occupation.
100 × union of constraint overlap / proposal footprint. Count intersecting constraint areas once. The areas/counts are supplied records; this decision view does not calculate intersections, distances or locations.
Geometry preparation must use matching coordinate systems, dated boundary editions and valid spatial predicates. Overlap supports referral; it does not determine ownership, permission or site safety. A static reference image does not verify these supplied measurements or boundaries.
Other required records: Legal forest boundary; observed footprint; boundary edition; field evidence.
Compare regeneration and planting options using site, species, maintenance and cost evidence.
What the selected record shows. There is not enough information to choose this option. Obtain the records and evidence about conditions listed below. The supplied budget less cost is 300,000 LKR.
Next step. Obtain the missing records before choosing. Prepare evidence request in the prototype creates a visible, downloadable draft. It is unassigned and not sent.
A cheaper option is not automatically the best restoration method.
Compare each alternative's stated benefit, adverse effects, domain evidence and mandatory constraints. Where cost and budget are supplied, budget balance = budget − option cost. A budget balance alone does not determine domain feasibility or select an option.
Other required records: Site degradation; natural regeneration; tenure; species options; costs; maintenance.
Check species requirements against the restoration site's evidence.
What the selected record shows. The required evidence is incomplete for this species selection case. The items below identify what must be obtained or reconciled.
A complete checklist does not establish ecological suitability.
Evidence completeness alone cannot establish suitability, eligibility, safety, permission or method validity.
Other required records: Species traits; soil; rainfall; elevation; native range; site objectives.
Compare usable seedling stock and commitments with planting demand.
What the selected record shows. Uncommitted usable stock: 310 seedlings. Review replenishment gap.
Next step. Review replenishment gap. Prepare stock review in the prototype creates a visible, downloadable draft. It is unassigned and not sent.
Stock must match species, provenance, condition and planting window.
Usable = physical−quarantined−expired (non-overlapping groups). Available = usable−commitments. Additional gap = max(0, new demand−available).
Stock must be compatible by item, lot, condition, expiry and delivery window. Do not allocate quarantined/expired stock or silently erase overcommitment.
Other required records: Species; healthy seedlings; planned demand; growing time; mortality; planting window.
Check the source and suitability evidence for seed and seedling batches.
What the selected record shows. The required evidence is incomplete for this seed provenance case. The items below identify what must be obtained or reconciled.
Record completeness is not certification of planting material.
Other required records: Lot ID; species; provenance; collection permit; health test; planting site.
Check invasive-species observations, spread and control prerequisites.
What the selected record shows. The required evidence is incomplete for this invasive plants case. The items below identify what must be obtained or reconciled.
Presence records alone do not establish a safe or effective control treatment.
Other required records: Species observations; occupied area; spread; treatment history; ecological sensitivity.
Use the supplied soil-loss factors to identify catchments needing detailed assessment.
Verified published formula · USLE factor product
What the selected record shows. Estimated annual sheet/rill loss: 15.641 t/ha/year.
Next step. Check local factor and site evidence before selecting a detailed erosion assessment. Prepare assessment brief in the prototype creates a visible, downloadable draft. It is unassigned and not sent.
Sheet-and-rill estimates do not measure all catchment sediment processes.
R × K × LS × C × P, using a mutually consistent SI factor set.
This USLE factor product is not a full RUSLE2 run, measured loss, delivered sediment, gully loss or landslide forecast. Local factors and uncertainty need review.
Other required records: Catchment; erosion factors; downstream dependence; forest condition; current controls.
United States Department of Agriculture Forest Service · A Guide for Predicting Sheet and Rill Erosion on Forest LandGovernment publication · 1980 technical publication SA-TP 11; Universal Soil Loss Equation, printed page 2; metric conversion appendix, printed page 40
The historical source verifies the factor product. Local factor choice and suitability still need confirmation; this is not a full RUSLE2 implementation.
Compare carbon-stock records using matching pools, area and inventory conventions.
Verified published component · Carbon stock-difference component
What the selected record shows. Carbon stock change: -850 t C.
Next step. Review the matched pools, area and observation periods. Prepare carbon comparison in the prototype creates a visible, downloadable draft. It is unassigned and not sent.
Stock change is not automatically a verified emissions reduction or credit.
(Later carbon density − earlier carbon density) × same inventory area, with identical pools, method and boundaries.
Inventory plots, allometry and uncertainty remain required evidence. Stock change is not an issued carbon credit, additionality test or payable service.
Other required records: Tree measurements; allometry; carbon fractions; pool coverage; area; uncertainty.
Intergovernmental Panel on Climate Change · 2006 IPCC Guidelines Volume 4 Chapter 2Institution publication · Section 2.3.1.1, equation 2.8, stock-difference method
The screen reports the period total. IPCC annualisation requires elapsed years. Pools, inventory inputs and local application still need confirmation.
Identify communities with no confirmed forestry participation and those not yet checked.
What the selected record shows. 30 communities are known to be uncovered; 5 have unknown coverage. 65% are confirmed covered.
Participation coverage does not establish consent or benefit-sharing agreement.
Other required records: Eligible communities; agreements; participation; benefits; service delivery; period.
Check timber-use case records before formal determination.
What the selected record shows. The required evidence is incomplete for this timber authorization case. The items below identify what must be obtained or reconciled.
The prototype does not issue a permit or determine legality.
Other required records: Permit request; species; quantity; provenance; forest plan; current conditions.
Check silvicultural task windows, resources and prerequisites.
What the selected record shows. Planned duration: 3 days. Resolve overlapping resource bookings.
Next step. Resolve overlapping resource bookings. Prepare schedule review in the prototype creates a visible, downloadable draft. It is unassigned and not sent.
The example schedule does not authorise operations in a forest stand.
Check start/end order, operating window, effort, predecessor completion and overlapping bookings for the same resource. A conflict is flagged; no optimal schedule is invented.
Other required records: Stand age; stocking; condition; treatment prescriptions; crew capacity; season.
Compare visitor demand with the supplied usable site-capacity assumption.
What the selected record shows. Usable capacity minus demand: -15 visitors/day. Review capacity shortfall.
Next step. Review capacity shortfall. Prepare capacity review in the prototype creates a visible, downloadable draft. It is unassigned and not sent.
Safe capacity needs adopted site and safety evidence; the example does not set an admission limit.
Usable capacity = rated capacity − documented unavailable capacity. Surplus/shortfall = usable − matching demand.
Match peak/average basis, time window, skill, staffing, accessibility and other binding constraints. One aggregate capacity does not override a safety constraint.
Other required records: Visitor numbers; approved capacity; trail condition; facilities; habitat sensitivity.
Check biodiversity survey effort, season and protocol before comparing observations.
What the selected record shows. Observed richness: 28 species. Review survey comparability.
Next step. Review survey comparability. Prepare biodiversity comparison in the prototype creates a visible, downloadable draft. It is unassigned and not sent.
Different effort or detection conditions can change observed richness.
Show distinct observed species with survey effort, protocol, season and completed visits. No correction for detection is silently inferred.
Observed richness is not population size or occupancy. Comparable effort alone does not remove detection bias or establish a biodiversity trend.
Other required records: Survey events; species; method; effort; season; habitat; detection limits.
Compare documented patrol journeys, capacity and access conditions.
What the selected record shows. The supplied journey is 24 km and 65 minutes. Usable capacity is 18 against 15 required in the stated service units. Access and operating conditions: Unresolved.
The page does not calculate a route or establish patrol safety.
Compare supplied route times/distances, usable capacity and documented access/window constraints. Display feasible candidates; no route optimization is implied.
Straight-line distance is not a road route. Example routes establish no current road status, emergency clearance or safe evacuation instruction. This decision view compares supplied journeys. It does not calculate a route or run a coordinate-based analysis.
Other required records: Incident locations; patrol resources; terrain; permitted routes; travel times.
Identify forest or compartment classifications needing source-definition review.
What the selected record shows. The required evidence is incomplete for this forest records case. The items below identify what must be obtained or reconciled.
Classification matching does not change an authoritative forest record.
Other required records: Forest ID; compartment label; source definition; legal edition; steward mapping.
Source. International publication.
Data needed. Seed lot ID, scientific name, collection locality, collection date and supplier or collection record.
Method. Match the seed lot to its origin record and retain the link through nursery handling. Resolve missing or conflicting provenance before dispatch.
Worked example. A nursery tray of kumbuk seedlings has a species label but no seed collection locality. Keep the lot aside until its source can be traced.
Next step. Put the affected lot on review and request the missing collection or supplier record.
FAO, A Guide to Forest Seed Handling. Seed certification and provenance documentation.
Sri Lankan context on locally collected tree seed. Sri Lanka Forest Genetic Resources country report.
Confirm Forest Department collection zones, permitted transfer and nursery release authority.
Check which existing source fields can supply the decision inputs.
Existing form reference: d5264d82f6a69e87
Existing form reference: 4e74cc389edc2305
Existing form reference: 820f4db29f0a3679
Existing form reference: 5d4e57af1e6712f1
Your institution has its own document and image library. Use the same library for reports, photos and other evidence.
Open this screen for Forest DepartmentSee the presentation example
Files added in the prototype stay in this browser. Public sharing is an access preview. Existing public reference links already work online.
Data structure keeps the existing source tree, records, charts and map. Manage structure adds a place to propose changes to definitions.
An entity type means a kind of thing or event, such as a reservoir or an inspection. Drafts stay in this browser. A demo approval does not change real definitions, data, chart links or sharing rights.
User management shows example profiles for each institution. People and Roles and access let you review the proposed account screens.
These are interface previews only. They create no account, send no email and change no access. Use example details in the preview. Institution verification does not grant a real permission.
We currently use public data and published reports where available. Please confirm whether your institution can provide data directly, so we can avoid retyping or reading figures from PDFs.
Do not enter passwords, access keys or private account details.
Use the Download answers button at the top of this page. Share the downloaded file or printed copy through your agreed review channel. Nothing is sent automatically.