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黄土丘陵半干旱区人工沙棘林水土保持和土壤水分生态效益分析
引用本文:陈云明,刘国彬,侯喜录.黄土丘陵半干旱区人工沙棘林水土保持和土壤水分生态效益分析[J].应用生态学报,2002,13(11):1389-1393.
作者姓名:陈云明  刘国彬  侯喜录
作者单位:中国科学院-水利部水土保持研究所,杨凌,712100
基金项目:国家重大基础研究发展规划项目 (G2 0 0 0 0 1860 6),中国科学院知识创新工程重大资助项目 (KZCX1 0 6 0 1 0 3 ) .
摘    要:沙棘及其混交林减少径流泥沙的作用突出,但结构和混交模式不同所发挥的水保作用大小不同。沙棘林生长季各月消耗利用水分的强度不同。在整个生长季,5月末0-500cm土层平均含水率最低,为5.1%;10月末最高,达8.8%,沙棘林对土壤水分的利用强度受林龄影响,8龄沙棘林年消耗土壤贮水231.2mm,应进行平茬,平茬后第3年末,土壤水分恢复深度达160cm,含水率为10.3%-14.6%,沙棘林具有削减坡位对土壤水分影响的作用,沙棘及其混交林对土壤水分的利用强度相似,林地存在土壤干层现象。

关 键 词:黄土丘陵半干旱区  人工沙棘林  水土保持  土壤水分  生态效益分析
文章编号:1001-9332(2002)11-1389-05
修稿时间:2001年3月7日

Ecological benefits of artificial seabuckthorn stands in semi-arid hilly region of Loess Plateauion soil-and water conservation and soil moisture
CHEN Yunming,LIU Guobin,HOU Xilu.Ecological benefits of artificial seabuckthorn stands in semi-arid hilly region of Loess Plateauion soil-and water conservation and soil moisture[J].Chinese Journal of Applied Ecology,2002,13(11):1389-1393.
Authors:CHEN Yunming  LIU Guobin  HOU Xilu
Institution:Institute of Soil and Water Conservation of Chinese Academy of Sciences and Ministry of Water Resources, Yangling 712100. ymchen@public.xa.sn.cn
Abstract:There is a remarkable function on decreasing runoff and sediment in seabuckthorn and its mixed stands, but the effects on soil- and water conservation are different due to different structure and patterns of seabuckthorn and its mixed stands. The intensity of soil water use by seabuckthorn forest was different along with the month in growing season. In growing season, soil moisture in 0-500 cm layer was 5.1%, the lowest in the end of May and 8.8%, the highest in the end of October. This intensity was also different with forest age. 8 ages seabuckthorn forest consumed 231.2 mm of soil stored water in 0-500 cm layer annually, and soil moisture was 5.6%. Therefore, it should be cut for increasing soil moisture. In end of the third year after cutting, soil moisture in 0-160 cm layer could recover, and the value would be 10.3%-14.6%. Seabuckthorn forest could reduce the effect of slope location on soil moisture. Seabuckthorn and its mixed stands have similar intensity of soil water use, and there was a soil dry layer phenomenon in their stands.
Keywords:Semi  arid hilly region  Loess Plateau  Artificial seabuckthorn stand  Soil and water conservation  Soil moisture  
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