摘要
流动沙地铺设生态垫后,对土壤温度、水分、养分等方面产生一定的影响。研究结果表明:流动沙地铺设生态垫后,能够明显降低土壤20 cm以上的温度,表层土壤温度变化明显,日均温可降低4.5℃;各层的土壤日温差均小于裸地,在表层最为明显,可降低8.1℃。在观测期间,铺垫后能够显著提高土壤0-15 cm的含水量,相对裸地提高167.33%,15-30 cm,30-45 cm的含水量相对提高53.10%,52.56%。铺设生态垫后,除土壤速效钾的含量有明显提高外,其它指标变化不明显。
Soil temperature,soil moisture, soil nutrients of drifting sand land with eco-mat and without eco-mat were studied,the results show：during the investigative time,with eco-mat,the soil temperature as decreased in the 0--20 cm layer,especially the surface soil was 4.5℃ lower than without eco-mat on average; the daily temperature difference of various deep soil was also lower than without eco-mat,obviously falling off 8.1℃ on the surface layer. With eco-mat,the soil moisture of 0--15 cm layer increased 167.33% more than without eco-mat, and 15 -- 30 cm, 30 -- 45 cm layers increased 53. 10%, 52.56%. With eco-mat, the available potassium appeared to heighten obviously,but the others changed inconspicuous.
出处
《水土保持研究》
CSCD
北大核心
2008年第3期81-83,87,共4页
Research of Soil and Water Conservation
基金
国家林业局推广项目(20040912)
关键词
生态垫
流动沙地
土壤温度
土壤湿度
土壤养分
eco-mat
drifting sand land
soil temperature
soil moisture, soil nutrients
