摘要
通过人工培育方法在室内、室外条件下研究了生物结皮人工培育技术,并对人工生物结皮对土壤渗透性的影响及其生物集雨面的集雨效率进行了测定。研究结果表明,在适宜的湿度(空气相对湿度80%~90%,土壤湿度13%~20%);温度(25℃~35℃)和光照条件(2500~12000 lx)下,对培育材料进行适当的处理后,经过20~30 d的人工培育,可在整平压实的坡面上形成连续的人工生物结皮集雨面。采用双环入渗仪和径流小区测定发现,人工生物结皮可使土壤入渗速率降低50%左右,生物结皮集雨面的集雨效率达到60%。所研究的生物结皮培育技术还可用于人工批量繁育生物结皮,用于生物集雨面的建设,以避免大量采集自然结皮对生态环境造成的破坏。
Experiments were conducted indoor and outdoor to study the technology of artificial cultivation of biological soil crust(BSC).Infiltration rates for the soil with and without biological soil crust were measured and runoff coefficients of biological rainwater harvesting plots were determined.Results showed that after treated reasonably,a continuous BSC with >90% coverage could be formed under 13%~20% relative air humidity,13%~20% substrate humidity,25 ℃~35 ℃,and 2 500~12 000 lx light intensity in 20~30 da...
出处
《水土保持通报》
CSCD
北大核心
2009年第1期145-149,共5页
Bulletin of Soil and Water Conservation
基金
国家863计划重大科技专项(2002AA2Z405
2001AA242011-1)
关键词
生物土壤结皮
生物结皮集雨面
生长最适环境
入渗速率
集流效率
biological soil crust
biological rainwater catchment
suitable environment condition
infiltration rate
rainwater harvesting efficiency
