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GROUP: excavation (ex)
DEFINITION: excavations & mines in use or <40% annual vegetation cover.

Table of Contents

Classification

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  1. Object
    1. generic mine or pit (not clay or mixing)
    2. mixing pit
    3. clay pit/mine, may include brickyard
  2. Modifier 1 (exposed surface type)
    1. generic mine or pit
      1. exposed earth = >25% cover by surface soil horizons above subsoil.
      2. exposed rock or other parent material = <25% cover by surface soil horizons above subsoil: cover is minerals exposed by excavation.
  3. Scale (of facility)
    1. small <30 m
    2. large >30m

Key

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  1. generic mine or pit (not clay or mixing)
    1. Exposed Earth
      1. small <30 m = ex01
      2. large >30 m = ex02
    2. exposed rock or other parent material
      1. small <30 m = ex03
      2. large >30 m = ex04
    3. Mixing Pit
      1. small <30 m = ex05
      2. large >30 m = ex06
    4. Railroad Bed
      1. small <30 m = ex07
      2. large >30 m = ex08

Dominance Rules

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  1. IF TYPE with greater area is very similar or otherwise unclear:
    1. Choose exposed earth over exposed rock or other parent material.

Factors

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Leaf Type: none
Leaf Time: none
Tree Cover: <10%
Vegetation Cover: <10%
Height: 0m
IGBP_DIS: ?Urban and built-up
Identification:
L1 Minimum: >5m
L2 Minimum: >2m

Compatible Classes

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FORM:

Anthropogenic Excavated Retention Pond

USE:

Mine & Fill

COVER:

Sealed Barren Bare soil Annual Mixed

TYPE:

CodeDescription
ex00unknown excavation type.

Mapped Ecotopes

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ANMEex01 ,  EXMEex02 ,  EXMEex08 ,  EXMXex04  

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.