عنوان

Deep vadose zone hydrology demonstrates fate of nitrate in eastern San Joaquin Valley

شماره

LA29j9j5xf

زبان متن نوشتاري يا گفتاري و مانند آن

انگلیسی

عنوان اصلي

Deep vadose zone hydrology demonstrates fate of nitrate in eastern San Joaquin Valley

نام عام مواد

[Article]

نام نخستين پديدآور

Harter, Thomas; Onsoy, Yuksel S.; Heeren, Katrin; Denton, Michelle; Weissmann, Gary; Hopmans, Jan W.; Horwath, William R.

متن يادداشت

The sustainability of water resources is key to continued prosperity in the San Joaquin Valley and California. The vadose zone is an often-ignored layer of wet but unsaturated sediments between the land surface and the water table. It plays an important role in groundwater recharge and in controlling the flux and attenuation of nitrate and other potential groundwater contaminants. In a former orchard at the UC Kearney Research and Extension Center, we investigated the processes that control the movement of water, nitrate and other contaminants through the deep vadose zone. These processes were found to be controlled by the alluvial sedimentary geology of the vadose zone, which is highly heterogeneous. This heterogeneity should be considered when interpreting soil and deep vadose zone monitoring data and assessing of the leaching potential of agricultural chemicals. The transport of contaminants through the vadose zone may be significantly faster than previously assumed, while denitrification is likely limited or insignificant in the oxic, alluvial vadose zone of the eastern San Joaquin Valley.

تاريخ نشر

2005

عنوان

California Agriculture

شماره جلد

59/2

عنصر شناسه اي

Harter, Thomas; Onsoy, Yuksel S.; Heeren, Katrin; Denton, Michelle; Weissmann, Gary; Hopmans, Jan W.; Horwath, William R.

نام الکترونيکي

نوع ماده

[Article]

کد کاربرگه

275578

سطح دسترسي

a

تكميل شده

Y