小叶章湿地土壤对磷的净化效率模拟  

Phosphorus removal efficiency of Calamagrostis angustifolia wetland soil in Sanjiang Plain.

作　　者：卢伟伟[1,2] 姜明[1] 吕宪国[1] 武海涛[1,2] 邹元春[1,2] 

机构地区：[1]中国科学院湿地生态与环境重点实验室,长春130012 [2]中国科学院研究生院,北京100049

出　　处：《生态学杂志》2009年第10期1986-1990,共5页Chinese Journal of Ecology

基　　金：中国科学院知识创新工程项目(KZCX2-YW-425-02);国家自然科学基金项目(40871049);中国科学院东北振兴科技行动计划资助项目(DBZX-2-024)

摘　　要：选取三江平原小叶章(Calamagrostis angustifolia)湿地,模拟了不同植物生长期、不同净化阶段、不同土层的小叶章湿地土壤对磷的净化效率及地表水磷输入量对土壤净化效率的影响。结果表明:小叶章的成熟期内湿地土壤对磷的净化效率最高;在各种因素的共同影响下小叶章生长期对土壤净化磷效率的影响不显著;总磷(TP)输入浓度由10mg.L-1增加到20mg.L-1时,小叶章湿地土壤对磷的净化效率提高;TP输入浓度为20mg.L-1时,净化前期和中后期小叶章湿地土壤对磷的平均净化效率分别为4.56和-0.71mg.kg-1.d-1,差异显著;TP输入浓度为20mg.L-1时,小叶章湿地0～10、10～20和20～40cm土壤层对磷的平均净化效率分别为2.27、-0.87和0.51mg.kg-1.d-1,但差异不显著。A simulation test was conducted to study the phosphorus （P） removal efficiency of Calamagrostis angustifolia wetland soil in Sanjiang Plain in different plant growth periods and removal stages, and the effects of P input on the P removal efficiency. The P removal efficiency was the highest in the maturing period of C. angustifolia, but no significant difference was observed among different growth periods. When the total phosphorus （TP） input concentration increased from 10 mg · L^-1 to 20 mg · L^-1 , the P removal efficiency enhanced, with the average removal efficiency being 4. 56 and -0.71 mg · kg^-·d^-1 in the early and mid-late removal stages, respectively. When the TP input concentration was 20 mg · L^-1, the P removal efficiency of 0-10, 10-20, and 20 -40 cm soil layers was 2. 27, -0.87, and0.51 mg· kg^-1· d^-1, respectively, but the difference was not significant .

关 键 词：小叶章湿地 土壤净化效率 磷 

分 类 号：X52[环境科学与工程—环境工程]