摘要
通过野外定位观测,对川中丘陵区坡耕地、水田与林地地表径流水中磷素迁移形态、迁移通量进行了初步研究。结果表明,坡耕地、林地磷素迁移以颗粒吸附态为主,水田磷素迁移以水溶性磷为主,所有土地利用类型径流中总磷含量已超过水体富营养化的标准。坡耕地、水田和林地地表径流水中磷迁移的通量分别为0.88 kg/(hm2.a),0.15 kg/(hm2.a)与0.33 kg/(hm2.a)。
Different forms of phosphorus and transport fluxes in surface runoff from a slope cropland, a paddy field and a forestland were monitored during a whole rainy season in the hilly areas of central Sichuan. Results showed that the major form of phosphorus loss is particulate-P in both upland and forestland, however, dissolved phosphorus is the main form in paddy field. The transport fluxes of phosphorus are 0.88 kg/（hm^2 · a）, 0.15 kg/（hm^2 · a） and 0.33 kg/（hm^2 · a） in upland, paddy field and forest land, respectively.
出处
《地球与环境》
CAS
CSCD
北大核心
2006年第4期7-10,共4页
Earth and Environment
基金
国家重点基础研究发展计划(2003CB415202)
中国科学院知识创新工程重要方向性项目(KZCX2-413)
关键词
川中丘陵区
土地利用方式
磷素迁移
hilly area
central Sichuan Basin
land use
phosphorus transport
