caa a22 4500 445814489 CHVBK 20180317145221.0 cr unu---uuuuu 170323e20110201xx s 000 0 eng 10.1007/s10040-010-0643-8 doi (NATIONALLICENCE)springer-10.1007/s10040-010-0643-8 Estimating groundwater recharge following land-use change using chloride mass balance of soil profiles: a case study at Guyuan and Xifeng in the Loess Plateau of China [Elektronische Daten] [Tianming Huang, Zhonghe Pang] Estimation de la recharge des eaux souterraines après changement d'occupation du sol au moyen du bilan chlorures sur profils pédologiques étude de cas à Guyuan et Xifeng sur le Plateau lœssique de Chine Groundwater recharge is affected by land use in (semi)arid areas. A new application of the chloride-mass-balance approach has been developed to estimate the reduction in groundwater recharge following land-use change by comparing chloride concentrations below the root zone and above the base of the chloride accumulation zone, before and after the land-use conversion. Two sites in the Loess Plateau of central China have been selected for study. Results from the Guyuan terrace region show that groundwater recharge beneath natural sparse small-grass was 100mm/year, but the conversion to winter wheat about 100years ago has reduced groundwater recharge to 55mm/year. At the Xifeng Loess Plain the conversion from winter wheat, with groundwater recharge at 33mm/year, to apple orchard 7years ago has led to chloride accumulation to 5m below land surface, suggesting the recharge rate has been reduced. This is in agreement with previous studies in these areas which have shown that the regional afforestation and other land-use conversions have resulted in deep soil desiccation and have caused an upper boundary to form with low matrix potential, thus preventing the soil moisture from actually recharging the aquifer. Springer-Verlag, 2010 Groundwater recharge/water budget nationallicence Unsaturated zone nationallicence Chloride mass balance nationallicence Land-use change nationallicence China nationallicence Huang Tianming Key Laboratory of Engineering Geomechanics, Institute of Geology and Geophysics, Chinese Academy of Sciences, 19 Beituchengxilu Rd., 100029, Beijing, China aut Pang Zhonghe Key Laboratory of Engineering Geomechanics, Institute of Geology and Geophysics, Chinese Academy of Sciences, 19 Beituchengxilu Rd., 100029, Beijing, China aut Hydrogeology Journal Springer-Verlag 19/1(2011-02-01), 177-186 1431-2174 19:1<177 2011 19 10040 https://doi.org/10.1007/s10040-010-0643-8 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s10040-010-0643-8 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Huang Tianming Key Laboratory of Engineering Geomechanics, Institute of Geology and Geophysics, Chinese Academy of Sciences, 19 Beituchengxilu Rd., 100029, Beijing, China aut NATIONALLICENCE 700 1- Pang Zhonghe Key Laboratory of Engineering Geomechanics, Institute of Geology and Geophysics, Chinese Academy of Sciences, 19 Beituchengxilu Rd., 100029, Beijing, China aut NATIONALLICENCE 773 0- Hydrogeology Journal Springer-Verlag 19/1(2011-02-01), 177-186 1431-2174 19:1<177 2011 19 10040 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer