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[1]LU Ai-gang,SUO An-ning,PANG De-qian,et al.Effect of Forest on Watersheds Hydrological Process in Middle Loess Plateau[J].Research of Soil and Water Conservation,2009,16(04):1-5.

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Effect of Forest on Watersheds Hydrological Process in Middle Loess Plateau

Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume: 16 Number of periods: 2009 04 Page number: 1-5 Column: Public date: 2009-08-20

Title:: Effect of Forest on Watersheds Hydrological Process in Middle Loess Plateau

Author(s):: LU Ai-gang^1,3, SUO An-ning², PANG De-qian³, WANG Tian-ming¹; 1. Key Laboratory for Biodiversity Science and Engineering, Ministry of Education, College of Life Sciences, Beijing Normal University, Beijing 100875, China;
2. National Marine Environment Monitoring Center, Dalian, Liaoning 116023, China;
3. Department of Environment and Life Sciences, Weinan Teachers University, Weinan, Shaanxi 714000, China

Keywords:: the Loess Plateau; coverage of forest; watershed; hydrological process

CLC:: S715;S157

DOI:: -

Abstract:: River hydrological process and corresponding coverage of forest in watersheds in middle Loess Plateau were analyzed in this paper. The results showed that there was an obvious decline trend of runoff generation index with increasing of coverage of forest. Output of most runoff was kept and distribution of runoff in dry season and flood season turned to uniform with more forest in watershed. Influenced by variation of rainfall, interannual variation of runoff in mountain watersheds with more forest was greater than that with less forest. More soil was conserved with increase of forest area, erosion modulus decreased by 46.19% with forest ration changing from 10% to 20%. The soil erosion caused by high intensive rainfall was focused on flood season in more forest watersheds and companied with more interannual variation comparing with less forest watershed.

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