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[1]QIAO Xue,LI Shuo,CHEN Yichen.Hydrological Effects of Vegetation Restoration in Eroded Environment——A Case Study of Lianshui Basin in Jiangxi Xingguo[J].Research of Soil and Water Conservation,2018,25(05):136-142.

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Hydrological Effects of Vegetation Restoration in Eroded Environment——A Case Study of Lianshui Basin in Jiangxi Xingguo

Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume: 25 Number of periods: 2018 05 Page number: 136-142 Column: Public date: 2018-09-06

Title:: Hydrological Effects of Vegetation Restoration in Eroded Environment——A Case Study of Lianshui Basin in Jiangxi Xingguo

Author(s):: QIAO Xue^1,2,3, LI Shuo^1,2,3, CHEN Yichen^1,2,3; 1. Key Laboratory of Virtual Geographic Environment, Ministry of Education, Nanjing Normal University, Nanjing 210023, China;
2. State Key Laboratory Cultivation Base of Geographical Environment Evolution, Jiangsu Province, Nanjing 210023, China;
3. Jiangsu Center for Collaborative Innovation in Geographical Information Resource Development and Application, Nanjing 210023, China

Keywords:: vegetation restoration; SWAT model; water yield; sediment yield; Lianshui watershed

CLC:: P333

DOI:: -

Abstract:: The Xingguo county of Jiangxi Province has been the key area of soil and water loss control in China because of the severe vegetation destruction and soil erosion since the 1960s. It was not until 1983 that watershed-based vegetation management and restoration were carried out in Xingguo. A case study on the hydrological effects of vegetation restoration was conducted in the Lianshui watershed, which was one of the severely eroded areas of Xingguo. In this study, the responses of water yield and sediment yield to the land use and land cover change in Lianshui watershed between 1975 and 2015 were analyzed by using the remote-sensing images and hydrologic observations. In addition, SWAT model was applied in Lianshui watershed with three scenarios based on the land use conditions in 1993, 2002 and 2015, respectively. The results showed that during the period from 1975 to 2015, the overall trends of land use change in Lianshui watershed presented the moderate increase in forest area and the significant decrease in cropland and unused land area; the sediment yield of this watershed had reduced due to the vegetation restoration which had greatly improved the soil erosion conditions, though the reduction of annual average runoff was not so remarkable; the maximum monthly water yield and sediment yield significantly reduced from 1978-1983 (pre-reforestation) to 1984-2015 (post-reforestation). According to the three scenarios modeled by SWAT, the rate of change in annual average water yield was not more than 1%, but reforestation had greater impact on the sediment. For example, the annual average sediment yield and the maximum monthly sediment yield in scenario of 2015 decreased by 57.6% and 50%, respectively, compared to those in scenarios of 2002. In conclusion, the case study in Lianshui watershed pointed out that the watershed-based vegetation management and restoration played an important role in soil and water conservation. However, the rapid reduction of sediment yield in 2008 indicated that it took at least 20 years for the vegetation restoration project to really make a difference under intense soil erosion in the watershed.

References:: [1] 李硕,刘磊. AnnAGNPS模型在潋水河流域产水、产沙的模拟评价[J].环境科学,2010,31(1):49-57.
[2] 舒建英,张世熔,孙波,等.江西兴国水土流失治理区土壤有机质动态变化[J].生态学报,2005,25(6):1240-1246.
[3] 刘昌明,曾燕.植被变化对产水量影响的研究[J].中国水利,2002(10):112-117.
[4] Yan B, Fang N F, Zhang P C, et al. Impacts of land use change on watershed streamflow and sediment yield:An assessment using hydrologic modelling and partial least squares regression[J]. Journal of Hydrology, 2013,484(6):26-37.
[5] 邓慧平,唐来华.沱江流域水文对全球气候变化的响应[J].地理学报,1998,53(1):42-48.
[6] Sun G, Zhou G, Zhang Z, et al. Potential water yield reduction due to forestation across China[J]. Journal of Hydrology, 2006,328(3/4):548-558.
[7] Zuo D, Xu Z, Yao W, et al. Assessing the effects of changes in land use and climate on runoff and sediment yields from a watershed in the Loess Plateau of China[J]. Science of the Total Environment, 2015,544:238-250.
[8] 黎云云,畅建霞,王义民,等.渭河流域径流对土地利用变化的时空响应[J].农业工程学报,2016,32(15):232-238.46(3):290-299.
[9] Arnold J G, Fohrer N. SWAT2000:current capabilities and research opportunities in applied watershed modelling[J]. Hydro-Logical Processes, 2005,19(3):563-572.
[10] 王晓朋,乔飞,雷坤,等. SWAT模型在我国的研究和应用进展[J].中国农村水利水电,2015(5):109-113.
[11] 徐宗学,程磊.分布式水文模型研究与应用进展[J].水利学报,2010,41(9):1009-1017.
[12] Shuo Li, Xu M, Sun B. Long-term hydrological response to reforestation in a large watershed in southeastern China[J]. Hydrological Processes, 2013,28(22):5573-5582.
[13] 杨刚.假设检验中的值研究[J].河南工程学院学报:自然科学版,2012,24(2):65-67.
[14] 邱玲花,彭定志,林荷娟,等.气候变化与人类活动对太湖西苕溪流域水文水资源影响甄别[J].水文,2015,35(1):45-50.
[15] 郭军庭,张志强,王盛萍,等.气候和土地利用变化对潮河流域产流产沙的影响[J].农业工程学报,2012,28(14):236-243.
[16] 郝振纯,苏振宽.土地利用变化对海河流域典型区域的径流影响[J].水科学进展,2015,26(4):491-499.
[17] Tan M L, Ibrahim A L, Yusop Z, et al. Impacts of land-use and climate variability on hydrological components in the Johor River basin, Malaysia[J]. International Association of Scientific Hydrology Bulletin, 2015,60(5):873-889.
[18] 黄秉维.森林对环境作用的几个问题[J].中国水利,1982(4):31-34.
[19] 周晓峰,赵惠勋,孙慧珍.正确评价森林水文效应[J].自然资源学报,2001,16(5):420-426.

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