000			01653nab a22002297a 4500
003			OSt
005			20220428093702.0
008			140107t1993 xxu|||||r2||| 00| 0 eng d
022			_a0140-1963
040			_cUGICENPAT
082			_a551.352
100			_946 _aCoronato, Fernando
245			_aMethodological comparison in the estimate of fluvial erosion in an arid closed basin of northeastern Patagonia
260			_bElsevier _c, 1993
300			_a; 231-239 p.
440			_9278 _aJournal of Arid Environments _n Nº 24 _x0140-1963
520			_aFluvial erosion was measured in a closed basin in the arid northeastern Patagonia using the following methods: drainage plots, decrease in capacity of playa-lake-bottom by sediment filling, and Universal Soil Loss Equation (USLE). Although results show a small amount of fluvial erosion, the different methodologies do not explain the observed differences, which would be due to the relative importance that gully erosion has in the area. The erosion plots and the USLE exclude this kind of erosion in their calculation, but it is implicitly considered in playa-lake filling. This means that gully erosion yields approximately 58% of total sediment received by the playa-lake bottom. Comparable values are mentioned by different authors and although the gully density is clearly lower than the maximum reported in the literature, it appears to be an important factor improving the USLE when it is applied to arid rangelands.
651			_950 _aPATAGONIA ARGENTINA
653			_aErosión fluvial (fluvial erosion)
700			_9189 _aDel Valle, Héctor F. _gCentro Nacional Patagónico
942			_2ddc _cSEPA
999			_c194 _d194