Quantifying land cover in a semi-arid region of Texas

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Title: Quantifying land cover in a semi-arid region of Texas
Author: Peschel, Joshua Michael
Abstract: Changes with land cover and land use are closely integrated with water and other ecological processes at the land surface . Nowhere is that more apparent than in the Edwards Aquifer region of southcentral Texas . The Edwards Aquifer contributing and recharge zones cover approximately 18 ,000 square kilometers in parts of 15 counties in Texas and includes San Antonio and Austin , the nation's eighth and nineteenth largest cities , respectively . Population growth within the counties that intersect the Edwards Aquifer contributing and recharge zones has taken place over the last two decades , with the logical translation being an expanded infrastructure . This implies that a greater amount of impervious surface coverage and other land cover changes have occurred . This work quantified the changes in land cover within the Edwards Aquifer contributing and recharge zones between the years 1986 and 2000 . Increasing trends in impervious surface area and woodland growth were identified . Additionally , a new ArcView software tool was developed to process SSURGO soil data for use within the ArcView SWAT model . Hydrologic modeling for the Upper Sabinal River watershed , located within the Edwards Aquifer region , revealed that the high resolution SSURGO data produces different results when used in place of the existing STATSGO soils data . Finally , an index of urbanization was developed and evaluated to assist investigators in identifying potential areas of urbanization .
URI: http : / /hdl .handle .net /1969 .1 /1425
Date: 2005-02-17

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Quantifying land cover in a semi-arid region of Texas. Available electronically from http : / /hdl .handle .net /1969 .1 /1425 .

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