A statistical analysis of watershed spatial characteristics that affect stream responses to urbanization in Maine, USA
| Autor: | Kristen K. Weil, Thomas J. Danielson, Leonidas Tsomides, Christopher S. Cronan, Robert J. Lilieholm |
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| Rok vydání: | 2019 |
| Předmět: |
Hydrology
geography geography.geographical_feature_category Watershed 010504 meteorology & atmospheric sciences Riparian buffer Land use Geography Planning and Development 0211 other engineering and technologies Drainage basin 021107 urban & regional planning Forestry 02 engineering and technology Land cover STREAMS 01 natural sciences Agricultural land Tourism Leisure and Hospitality Management Impervious surface 0105 earth and related environmental sciences General Environmental Science |
| Zdroj: | Applied Geography. 105:37-46 |
| ISSN: | 0143-6228 |
| Popis: | Increasing numbers of streams are threatened with impairment from disturbance and stresses associated with land use changes and urbanization. Efforts to protect and to sustain the integrity of threatened streams require a means of identifying at-risk watersheds, coupled with appropriate smart growth strategies or watershed conservation actions. In this investigation, two statistical approaches were applied to identify spatially-explicit biophysical and watershed land cover factors that influence stream vulnerability to urbanization. Results indicated that Class A streams with ≥3% catchment impervious cover (IC) and Class B streams with ≥6% catchment IC have a higher risk of degradation from urbanization stress when their watersheds exhibit the following biophysical characteristics: ≥ 5% agricultural land cover, ≥ 14% wetland cover, ≥ 67% class D soils, and a soil erosion K factor > 0.08. Evidence also indicated that streams are less likely to suffer impairment from urbanization stress when their resistant or resilient watersheds are associated with the following biophysical characteristics: > 30% Class A and B soils, a depth-to-water table >167 cm, and >80% natural area or forest cover in a 60 m riparian buffer zone, coupled with |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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