CSTR:11738.11.ncdc.HWTSZhan.2020.35
10.12072/ncdc.HWTSZhan.db0011.2020
<pre><code> <p>This data set is the runoff field data of Luoyugou watershed in the third sub region of Loess Hilly and gully region from 2008 to 2010. In 2006, 17 slope runoff plots with different slopes and measures were set up in Luoyugou experimental site. The main observation indexes were precipitation, runoff, sediment, surface vegetation, soil moisture and other parameters. Precipitation is observed by rain gauge; runoff is observed by catchment basin; sediment concentration is calculated by artificial sampling and replacement method, and then sediment yield is calculated; vegetation coverage is observed by visual estimation method, and canopy density is observed by needle method. The data set includes the basic information of runoff plots and the results of successive runoff and sediment tests. </p>
<pre><code> <p>Artificial fixed point observation</p>
<pre><code> <p>Precipitation observation: runoff field observation of the beginning and ending time of precipitation and the total amount of precipitation.
Runoff observation: the total amount of runoff (muddy water) generated by precipitation is observed only once in the runoff field, and the starting and ending time and process of runoff are not observed. The water measuring equipment is a collecting basin. After the discharge is finished, the water depth is measured directly and the runoff is calculated. Sediment volume observation: immediately after the end of precipitation and runoff. The sludge and water in the collecting channel are swept into the runoff pool and stirred evenly. Two to three columnar water samples (1000-3000ml in total) are taken. The mixed 500ml water sample is taken as the standard sample. The sediment concentration is determined by displacement method (Pycnometer method). Observation of surface vegetation: Observation of growth period, plant height, biological yield, coverage and canopy density of surface vegetation shall be carried out according to relevant standards.
<pre><code> <p>According to the provisions of "soil and water conservation test specification" (sd239) and "soil and water conservation test specification" (sl419), the data are observed, sorted and compiled by professional technicians.
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CC BY 4.0 (Creative Commons Attribution 4.0 International License).
