0011157: Maximum number of trees seems absolutely unrelated to the initial amount of trees on the map. - Dwarf Fortress Bug Tracker

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ID

Project

Category

View Status

Date Submitted

Last Update

0011157

Dwarf Fortress

Dwarf Mode -- Environment

public

2019-10-03 12:29

2019-10-06 09:29

Reporter

Urist McuristUrist

Assigned To

Loci

Priority

normal

Severity

minor

Reproducibility

have not tried

Status

resolved

Resolution

duplicate

Platform

Personal Computer

OS

Windows 10 PC

OS Version

10.0.18362

Product Version

0.44.12

Target Version

Fixed in Version

Summary

0011157: Maximum number of trees seems absolutely unrelated to the initial amount of trees on the map.

Description

Basically I embarked on a Savage Temperate Sand Desert biome with Scarce trees and within three years it became more forested than most Heavily Forested regions are on embark. I don't think that's the intended behavior.

Steps To Reproduce

1. Embark on a Sand Desert (or, most likely, any desert with soil)
2. Wait unthil trees start to appear
3. Trees will cover everything

Additional Information

Might be just the lack of a feature and not a "true" bug.

Embark biome is a pure unmixed Savage Temperate Sand Desert, no river or ocean.

Caverns have been breached before I noticed this.

File:
http://dffd.bay12games.com/file.php?id=14551 [^]

Tags

No tags attached.

Relationships

duplicate of

acknowledged

Sparsely forested/vegetated biomes will get lush in some years

Notes
(0039523) PatrikLundell (reporter) 2019-10-04 02:17	It's a lack of features. As far as I've been able to determine (a thread a number of years ago), the criterion for whether a sapling can mature to a tree is that there is nothing blocking its access to the sky (above ground trees only, naturally), and that there is nothing blocking access to the tile above (i.e. a 2Z headroom [and bridges don't count: trees readily grow through those on maturation]). The biome (or possibly the Vegetation parameter) determines the rate at which saplings are spawned, and so the rate at which the junglification happens. I don't know if there is any variation in sapling withering rates between biomes. Stockpiles block maturation for as long as they cover a sapling, with withering/maturation determination happening shortly after the stockpile is removed.

Issue History
Date Modified	Username	Field	Change
2019-10-03 12:29	Urist McuristUrist	New Issue
2019-10-04 02:17	PatrikLundell	Note Added: 0039523
2019-10-06 09:29	Loci	Relationship added	duplicate of 0009581
2019-10-06 09:29	Loci	Status	new => resolved
2019-10-06 09:29	Loci	Resolution	open => duplicate
2019-10-06 09:29	Loci	Assigned To	=> Loci

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