The influence of drained peat soils on diffuse nitrogen pollution of surface water
被引:10
|
作者:
论文数: 引用数:
h-index:
机构:
Vassiljev, Anatoli
[1
]
论文数: 引用数:
h-index:
机构:
Blinova, Irina
[2
]
机构:
[1] Tallinn Univ Technol, EE-19086 Tallinn, Estonia
[2] NICPB, EE-12618 Tallinn, Estonia
来源:
HYDROLOGY RESEARCH
|
2012年
/
43卷
/
04期
关键词:
diffuse pollution;
nutrients;
peat soils;
river water quality;
SOURCE APPORTIONMENT;
NUTRIENT RELEASE;
RETENTION;
CHEMISTRY;
QUALITY;
STREAMS;
D O I:
10.2166/nh.2012.117
中图分类号:
TV21 [水资源调查与水利规划];
学科分类号:
081501 ;
摘要:
Eutrophication caused by excess nutrient loads is the main problem for Estonian surface waters. Even after the drastic decrease in the application of mineral fertilizers at the beginning of the 1990s, the concentrations of nitrogen and phosphorus in many rivers remained at undesirable and unexpectedly high levels. The investigation showed that drained peat soils are an important source of nitrogen export to the surface waters. Runoff of nitrogen from drained peat soils is, on average, 1.5-fold higher than from agricultural lands in Estonia.