%0 Journal Article
%T Effects of artificial seabuckthorn forest on soil and water conservation in loess hilly region<br>黄土丘陵区人工沙棘林水土保持作用机理及效益
%A CHEN Yunming
%A LIU Guobin
%A XU Bingcheng
%A <br>陈云明
%J 应用生态学报
%D 2005
%I 
%X Seabuckthorn is regarded as a main eco-economical tree species, and plays an increasing important role in eco-environmental construction in Northwest, Northeast and North China. Our study on artificial seabuckthorn forest in loess hilly region showed that the average rainfall interception rate of 7-10 ages seabuckthorn canopy was 8.5%, and the litter layer of 5-10 ages seabuckthorn forest could intercept 0.89 mm rainfall. Seabuckthorn forest could improve soil infiltration and anti-strike ability through improving soil physical and chemical properties, and the numbers of its hair roots and the depth of its litter layer were the main indices of soil anti-strike ability. The effects of seabuckthorn forest on soil and water conservation increased with its increasing age. In 2-3 ages stage, the effects were weak, and the runoff and sediment were mainly affected by the characters of rainfall. In 4-5 ages stage when the forest became maturing, the annual runoff depth and annual erosion modulus were 1.8-3.2 mm and 24.64 t x km(-2), respectively. In 6-12 ages stage when the forest matured, the runoff and sediment on seabuckthorn woodland changed slowly, the annual runoff depth and annual erosion modulus being 0.3 -3.4 mm and 0-6.75 t x km(-2), respectively, and the characters of rainfall had much less effect on them. In the stage from young (2-5 ages) to mature forest, the sediment charge in runoff changed sharply, ranged from 77. 31 kg x m(-3) to 9.12 kg x m(-3), but in 6-12 ages stage, the sediment content in runoff changed very slowly, and the range was 0-5.09 kg x m(-3).
%K Artificial seabuckthorn forest
%K Loess hilly region
%K Soil and water conservation
%K Mechanism<br>人工沙棘林
%K 黄土丘陵区
%K 水土保持作用
%K 机理
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=90BA3D13E7F3BC869AC96FB3DA594E3FE34FBF7B8BC0E591&jid=42FEDDFE54F8BCD9D5FD1926ABDD7722&aid=2973D21326D683CB&yid=2DD7160C83D0ACED&vid=7801E6FC5AE9020C&iid=E158A972A605785F&sid=240CB58995465C01&eid=4158386E7B9422C8&journal_id=1001-9332&journal_name=应用生态学报&referenced_num=4&reference_num=24