GROUP: disturbed & debris (db)
DEFINITION: disturbed areas near structures or >10% cover of anthropogenic debris, abandoned or small (<5m/unmapped) earth or sealed structures or pits, mixed small USE patches, usually <30m in size. Disturbance may include livestock grazing if grazing is>25% of year AND is not managed using fencing or formal agreements or management plan by the landowner (land managed as a “commons”). USE = Disturbed. COVER varies, may be Sealed for some construction site and abandoned solid structures with <50% of roof or sealed surface remaining features.

Table of Contents

Classification

Return
  1. Object
    1. bare earth area
    2. regrowth area
    3. grave regrowth vegetation = >10% cover of vegetation growing within feature.
    4. construction site = area currently disturbed by ongoing construction activities such that final feature boundary and use cannot be precisely determined.
    5. abandoned earth/plastic horticulture structures with <50% of original roof remaining.
    6. abandoned solid structures with <50% of roof or sealed surface remaining = mostly abandoned buildings with so little roof or structure remaining (<50%) that it is nearly impossible to use the building again, and vegetation will eventually start growing in it.  May include other abandoned structures in similar condition, including abandoned sealed drying areas.
  2. Modifier 1 (degree of disturbance: only bare earth + regrowth area)
    1. no structures or debris = opposite of with structures or debris.
    2. with structures or debris = includes small buildings, small pits and mounds, heavily compacted areas, trash, building debris, or abandoned agricultural land with field borders, leveling and other anthropogenic earthen structures visible.
  3. Vegetation (of building footprint)
    1. regrowth area + abandoned solid structures
      1. non-woody
      2. woody/some trees
      3. tree covered (>60%) = may be primarily >3m tall bamboo cover, planted or regrowth.
    2. abandoned solid structures
      1. 40% vegetation cover all year.

Key

Return
  1. bare earth area
    1. no structures or debris = db01
    2. with structures or debris = db02
  2. regrowth area
    1. no structures or debris
      1. non-woody = db03
      2. woody/some trees = db04
      3. tree covered (>60%) = db05
    2. with structures or debris
      1. non-woody = db06
      2. woody/some trees = db07
      3. tree covered (>60%) = db08
  3. regrowth area
    1. non-woody = db09
    2. woody/some trees = db10
    3. tree covered (>60%) = db11
  4. construction site = db12
  5. abandoned earth/plastic horticulture structures with <50% of original roof remaining = db13
  6. abandoned solid structures with <50% of roof or sealed surface remaining
    1. non-woody = db14
    2. woody/some trees = db15
    3. tree covered (>60%) = db16
    4. mostly bare = db17

Dominance Rules

Return
  1. IF TYPE with greater area is very similar or otherwise unclear:
    1. Choose bare earth area over regrowth area.
    2. Choose with structures or debris over no structures or debris.
  2. IF unclear whether a field border or other anthropogenic boundary or earthwork is used as a path (tr01) or is just a disturbed feature (significant vegetation growth, etc.):
    1. Choose disturbed & debris over transportation.

Factors

Return
Leaf Type: mixed
Leaf Time: mixed
Tree Cover: mixed
Vegetation Cover: >10%
Height: mixed
IGBP_DIS: ?Urban and built-up
Identification:
L1 Minimum: >2m linear, >10m polygon
L2 Minimum: >0.2m linear, >5m polygon

Compatible Classes

Return

FORM:

Anthropogenic Mounded Excavated Terraced Slope Floodplain Foot Slope Bench Plateau Summit Sloping Steep Slope Marsh Flowing Marsh Shallow Stream Seasonal Stream Seasonal River Water Margin Canal Margin River Margin

USE:

Disturbed

COVER:

Sealed Bare soil Annual Mixed Perennial

TYPE:

CodeDescription
db00unknown disturbed & debris type.
db01bare earth area, no structures or debris.
db02bare earth area, with structures or debris.
db03non-woody regrowth area, no structures or debris.
db04woody/some trees regrowth area, no structures or debris.
db05tree covered regrowth area, no structures or debris.
db06non-woody regrowth area, with structures or debris.
db07woody/some trees regrowth area, with structures or debris.
db08tree covered regrowth area, with structures or debris.
db09non-woody grave regrowth vegetation.
db10woody/some trees grave regrowth vegetation.
db11tree covered (>60%) grave regrowth vegetation.
db12construction site.
db13abandoned earth/plastic horticulture structures with <50% of original roof remaining.
db14non-woody abandoned solid structures with <50% of roof & sealed surface remaining.
db15woody/some trees abandoned solid structures with <50% of roof & sealed surface remaining.
db16tree covered (>60%) abandoned solid structures with <50% of roof & sealed surface remaining.
db17mostly bare abandoned solid structures with <50% of roof & sealed surface remaining.

Mapped Ecotopes

Return
ANDAdb03 ANDAdb06 ANDAdb09 ANDAdb14 ANDEdb01 ANDEdb02 ANDMdb04 ANDMdb07 ANDMdb10 ANDMdb12 ANDMdb13 ANDMdb15 ANDPdb05 ANDPdb08 ANDPdb11 ANDPdb16 BPDAdb03 BPDAdb06 BPDMdb04 BPDMdb07 BPDPdb05 BPDPdb08 EXDMdb07 FMDMdb07 FPDAdb03 FPDAdb06 FPDEdb02 FPDMdb04 FPDMdb07 FPDPdb08 FSDAdb03 FSDAdb06 FSDMdb04 FSDMdb07 FSDPdb05 FSDPdb08 MADAdb06 MSDAdb03 MSDMdb04 SLDAdb03 SLDAdb06 SLDEdb01 SLDEdb02 SLDMdb04 SLDMdb07 SLDMdb12 SLDPdb05 SLDPdb08 SSDAdb03 SSDAdb06 SSDMdb04 SSDMdb07 SSDPdb05 SSDPdb08 SUDAdb03 SUDMdb04 WMDAdb06 ANDSdb17  

Citation for AEM: Ellis E. C., H. Wang, H. Xiao, K. Peng, X. P. Liu, S. C. Li, H. Ouyang, X. Cheng, and L. Z. Yang. 2006. Measuring long-term ecological changes in densely populated landscapes using current and historical high resolution imagery. Remote Sensing of Environment 100(4):457-473.