文献类型：期刊文献

英文题名：New measures of deep soil water recharge during the vegetation restoration process in semi-arid regions of northern China

作者：Cheng, Yiben[1,5] Lie, Xinle[2] Wang, Yunqi[1,5] Zhan, Hongbin[3] Yang, Wenbin[4] Jiang, Qunou[1,5]

第一作者：Cheng, Yiben

通信作者：Cheng, YB[1];Lie, XL[2];Cheng, YB[3]

机构：[1]Beijing Forestry Univ, Sch Soil & Water Conservat, Beijing 100083, Peoples R China;[2]Chinese Acad Forestry, Expt Ctr Desert Forestry, Dengkou 015200, Peoples R China;[3]Texas A&M Univ, Dept Geol & Geophys, College Stn, TX 77843 USA;[4]Chinese Acad Forestry, Inst Desertificat Control, Beijing 100093, Peoples R China;[5]Beijing Forestry Univ, Sch Soil & Water Conservat, Jinyun Forest Ecosyst Res Stn, Beijing 100083, Peoples R China

年份：2020

卷号：24

期号：12

起止页码：5875-5890

外文期刊名：HYDROLOGY AND EARTH SYSTEM SCIENCES

收录：;EI(收录号：20205209669000);Scopus(收录号：2-s2.0-85097908433);WOS:【SCI-EXPANDED(收录号:WOS:000599525000001)】；

基金：This research was supported by the following: the National Key R&D Program of China (2016YFE0202900); Fundamental Research Funds of CAF (CAFYBB2020MB007); the Open Project Program of the Ministry of Education Key Laboratory of Ecology and Resource Use of the Mongolian Plateau (KF2020004); the Major Program of the National Natural Science Foundation of China, the National Science and Technology Major Project, and the Ministry of Science and Technology of China (nos. 2017ZX07101004, 2018YFC0507100, 2019ZD003, 31971726); the National Non-profit Institute Research Grant of the Chinese Academy of Forestry (grant number CAFYBB2018ZA004); and research grants from the Fundamental Research Funds for the Central Universities (BLX201814, no. 2015ZCQ-SB-01).

语种：英文

外文关键词：Arid regions - Rain - Reforestation - Soil moisture - Soil surveys

摘要：Desertification in semi-arid regions is currently a global environmental and societal problem. This research attempts to understand whether a 40-year-old rain-fed Artemisia sphaerocephala Krasch sand-fixing land as part of the Three North Shelterbelt Program (3NSP) of China can be developed sustainably or not using a newly designed lysimeter to monitor the precipitation-induced deep soil recharge (DSR) at 220 cm of depth. Evapotranspiration is calculated through a water balance equation when precipitation and soil moisture data are collected. A comparison of soil particle sizes and soil moisture distributions in artificial sand-fixing land and neighboring bare land is made to assess the impact of sand-fixing reforestation. Results show that such a sand-fixing reforestation results in a root system being mainly developed in the horizontal direction and a changed soil particle distribution. Specifically, the sandy soil with 50.53 % medium sand has been transformed into a sandy soil with 68.53 % fine sand. Within the Artemisia sphaerocephala Krasch sand-fixing experimental area, the DSR values in the bare sand plot and Artemisia sphaerocephala Krasch plot are respectively 283.6 and 90 6 mm in wet years, reflecting a difference of more than 3 times. The deep soil layer moisture in semi-arid sandy land is largely replenished by precipitation-induced infiltration. The DSR values of the bare sandy land plot and Artemisia sphaerocephala Krasch plot are respectively 51.6 and 2 mm in dry years, a difference of more than 25 times. The proportions of DSR reduced by Artemisia sphaerocephala Krasch are 68.06 % and 96.12 % in wet and dry years, respectively. This research shows that Artemisia sphaerocephala Krasch in semi-arid regions can continue to grow and has the capacity to fix sand. It consumes a large amount of precipitated water and reduces the amount of DSR considerably.