欢迎访问林草资源研究

FOREST RESOURCES WANAGEMENT ›› 2022›› Issue (1): 166-173.doi: 10.13466/j.cnki.lyzygl.2022.01.020

• Research Briefing • Previous Articles     Next Articles

Hydrological Effects of Litter Layer in Four Typical Shrubs in Guangxi Zhuang Autonomous Region

DAI Fenglin(), CHEN Fangqing(), LV Kun, LIU Yangyun   

  1. Hubei International Scientific and Technological Cooperation Center of Ecological Conservation and Management in the Three Gorges Area,Yichang,Hubei 443000,China
  • Received:2021-12-27 Revised:2022-01-07 Online:2022-02-28 Published:2022-03-31
  • Contact: CHEN Fangqing E-mail:1032098356@qq.com;fqchen@ctgu.cn

Abstract:

Litter layer in shrub communities plays an important role in soil and water conservation.In order to explore the differences in hydrological effects of different shrubs,litters were sampled from community under storey of four typical shrubs distributed in Guangxi Zhuang Autonomous Region in cluding Alchornea trewioides,Vitex negundo,Maesa japonica and Bauhinia purpurea communities. The water and soil conservation effect of the litter layer and its mechanism were revealed by measuring parameters such as litter volume,water holding rate and water in terception volume.The total litter accumulation ranged from 3.80 t/hm 2 to 4.84 t/hm2 in the four shrubs.The largest accumulation appeared in the A.trewioides community. There were significant differences among the four shrubs in the natural moisture content and the maximum water holding rate of the litter layer,which of B. purpurea community were significantly higher than the other three shrubs. The total effective in terception of litter in the four shrubs ranged from 5.3 t/hm 2 to 7.28 t/hm2.The order of the total effective interception of each community type was as follows:A. trewioides>V.negundo>B. purpurea> M.japonica. The total effective interception of the A. trewioides community was 11.15%,35.06% and 36.84% higher than that of V. negundo,B. purpurea and M. japonica community,respectively.The litter layer of A. trewioides and B. purpurea community had better hydrological effects in the four typical shrubs.

Key words: litter, water holding capacity, water interception, shrub, Guangxi Zhuang Autonomous Region

CLC Number: