摘要
对贵州西部水城县严重侵蚀地段3种治理模式及对照的水土保持功能进行了研究。结果表明:3种治理模式的水土保持功能大小顺序为模式Ⅲ>模式Ⅱ>模式Ⅰ,其土壤容重分别比对照减少了37.6％,21％和26.6％;土壤饱和持水量比对照增加了82％,43.5％,61.7％;土壤通气度是对照的2.26,1.44,1.16倍。抗侵蚀能力是对照的3.16,2.67,2.06倍。模式Ⅲ渗透性最强,其初渗速度和稳渗速度分别是对照的1.87和2.10倍,是模式Ⅱ的1.05和1.34倍,是模式Ⅰ的1.45和1.62倍。模式Ⅲ的枯落物层持水能力最强,为11.07 t/hm^2,分别是模式Ⅱ的1.26倍、模式Ⅰ的1.98倍。
The text summarizes the study on functions of water and soil conservation for 3 control models and the
contrast in heavily corroded region in Shuicheng County, locating in west part of Guizhou. The result showed that
the rank of function on water and soil conservation among 3 control models was pattern 3>pattern 2>pattern 1;
their soil weights per unit reduced by 37. 6%, 21% and 26. 6% respectively comparing to the contrast; their
amounts of holding water increased by 82 %, 43. 5 % and 61. 7% respectively comparing to the contrast; their
ventilation degrees were 2. 26, 1. 44 and 1. 16 times of the contrast;s respectively; and the strengths of anti-ero-
sion were 3. 16, 2. 67 and 2. 06 times of the contrastts respectively. Pattern 3 showed the best permeability of
soil, the initial rate of infiltration and the stable rate of infiltration were 1. 87 and 2. 10 times of the contrast's re-
spectively, were 1. 05 and 1. 34 times of pattern 2's and 1. 45 and 1. 62 times of pattern 1's. In terms of the ability
of holding water of doddered branches and leaves, pattern 3 had the strongest ability and the amount of holing
water per hectare was 11. 07 tons, which was 1. 26 times of pattern 2's and 1. 98 times of pattern 1's respectively.
出处
《水土保持学报》
CSCD
北大核心
2004年第5期88-90,共3页
Journal of Soil and Water Conservation
基金
贵州省科学技术基金(20023044)
关键词
水城县
侵蚀地段
治理模式
水土保持
Shuicheng County
heavy corrosion
functions of water and soil conservation
