JOURNAL OF NATURAL RESOURCES ›› 2019, Vol. 34 ›› Issue (7): 1405-1416.doi: 10.31497/zrzyxb.20190705

• Resource Utilization and Management • Previous Articles     Next Articles

Effects of different plant measures on soil and water conservation in typical tableland zones on the Loess Plateau

SUN Cong-jian1,2, HOU Hui-xin1, CHEN Wei1, YANG Wei1, ZHENG Zhen-jing1   

  1. 1. School of Geographical Sciences, Shanxi Normal University, Linfen 041000, Shanxi, China;
    2. State Key Laboratory of Desert and Oasis Ecology, Xinjiang Institute of Ecology and Geography, CAS, Urumqi 830011, China
  • Received:2018-11-15 Online:2019-07-28 Published:2019-07-28

Abstract: This article, based on the observations of the measured (2014-2016) rainfall data from typical loess tableland zones and slope runoff and sediment yield with five vegetation measures (arbor, shrub, woodland, artificial grass and cultivated field), systematically analyzes the effects of different types of erosive rainfall on the soil and water conservation on loess sloping land under different vegetation coverages. The results are shown as follows. (1) Most of the rainfall in the research area occurred in the period April to October, in which the erosive rainfall induced from soil erosion was concentrated in July and August. (2) Erosive rainfall can be achieved based on the maximum 30-minute rainfall intensity and total rainfall. It is divided into five types, among which the event with small rainfall and low intensity is the most frequent type, and the erosive force of the 5th pattern is the largest, followed by the 1st pattern with the largest rainfall, and the erosive force of the 2nd pattern is the lowest. (3) Five types of vegetation measures show obvious soil and water conservation effect under different types of rainfall. And the changing rules of the rate of sediment reduction and the rate of reduction of flow under different rainfall conditions are different.

Key words: Loess Plateau, vegetation measures, sand and water reduction, soil and water conservation