This forum is shutting down! Please post new discussions at community.naturalcapitalproject.org
usle to high (SDR)
Hi InVest users,
my results from the usle are to big. the blue field on the picture shows a agricultural field with almost one hectar. the total soi loss is about **206 t/ha/year** (zonal statistics -> sum of the pixels in the field). the mean value for one pixel in this field is about **0.14 t/ha/year**. i used a dem with a resolution of 2.5m x 2.5m.
the imputdata was as follows: **R=746**(all area); **K=0.27**(all area); **C=0.26** (agricultural area)
k=2; IC0=0.5; SDR= 0.34
i allready calculated the usle in GIS by myself. i got quite good results. even the ls-raster from the intermediate_outputs is not to high compared to my ls-raster caluclated in GIS.
the InVest model is calculating succesfully, there is a warning though at the flow acumulation part:
*04/20/2019 10:49:09 natcap.invest.sdr INFO calculating flow accumulation*
*04/20/2019 10:49:09 natcap.invest.pygeoprocessing_0_3_3.routing DEBUG starting flow accumulation*
*04/20/2019 10:49:14 natcap.invest.pygeoprocessing_0_3_3.routing.routing_core **WARNING** no flow direction found for 0 2 WARNING no flow direction found for 0 2*
*04/20/2019 10:49:14 natcap.invest.pygeoprocessing_0_3_3.routing.routing_core **WARNING** no flow direction found for 0 2*
*04/20/2019 10:49:22 natcap.invest.pygeoprocessing_0_3_3.routing.routing_core INFO calculate transport cells_to_process.size() = 352*
*04/20/2019 10:49:22 natcap.invest.sdr INFO calculate ls term*
*04/20/2019 10:49:22 pygeoprocessing.geoprocessing INFO starting stats_worker*
*04/20/2019 10:49:22 pygeoprocessing.geoprocessing INFO started stats_worker <Thread(Thread-6, started daemon 11488)>*
*04/20/2019 10:49:26 pygeoprocessing.geoprocessing INFO 100.0%% complete*
not sure if this warning causes proplems calculating the usle...
what do i miss? can anybody help me out here, please?