scholarly journals A comparative study of nutrient transfer via surface runoff from two small agricultural catchments in north China

2006 ◽  
Vol 52 (8) ◽  
pp. 1549-1558 ◽  
Author(s):  
Haiming Lu ◽  
Chengqing Yin ◽  
Weidong Wang ◽  
Baoqing Shan
Keyword(s):  
Comparative Study ◽  
Surface Runoff ◽  
North China ◽  
Nutrient Transfer ◽  
Agricultural Catchments

Hydrograph recession characteristics of some small agricultural catchments

Soil Research ◽  
1985 ◽  
Vol 23 (3) ◽  
pp. 373 ◽  
Author(s):  
WC Boughton ◽  
DM Freebairn
Keyword(s):  
Flow Rate ◽  
Surface Runoff ◽  
Surface Soil ◽  
New South ◽  
Published Data ◽  
Unit Hydrograph ◽  
Agricultural Catchments ◽  
South Wales ◽  
Catchment Size ◽  
Time Required

Five-min recession constants were calculated for surface runoff and interflow using hydrographs of runoff from five 1-ha catchments at Greenmount near Toowoomba in south-east Queensland. The recession constants were converted to half-flow periods, i.e. the time required for flow rate to halve during an exponential recession. The half-flow periods of surface runoff and interflow on the 1 ha catchment are compared with published data from catchments of much larger size in New South Wales, and it is shown that the ratio of interflow half-flow period to surface runoff half-flow period does not vary much over six orders of magnitude of catchment size. Calculations of maximum rates of interflow and volumes of interflow storage show that both rates and volumes are possible in the plough depth of surface soil. The results support the evidence of interflow obtained earlier in unit hydrograph studies of runoff on these same catchments.

scholarly journals Comparative Study of PAHs in PM1 and PM2.5 at a Background Site in the North China Plain

2019 ◽  
Vol 19 (10) ◽  
pp. 2281-2293 ◽  
Author(s):  
Yan Zhang ◽  
Lingxiao Yang ◽  
Ying Gao ◽  
Jianmin Chen ◽  
Yanyan Li ◽  
...  
Keyword(s):  
Comparative Study ◽  
North China Plain ◽  
North China ◽  
Background Site ◽  
The North ◽  
The North China Plain

A comparative study on four survey methods used in ungulate population size in winter in north China

2015 ◽  
Vol 35 (9) ◽  
Author(s):  
刘辉 LIU Hui ◽  
姜广顺 JIANG Guangshun ◽  
李惠 LI Hui
Keyword(s):  
Comparative Study ◽  
Population Size ◽  
North China ◽  
Survey Methods
Sign in / Sign up

Export Citation Format

Share Document