MATERIALS & METHODS
Two soils under different management practices
were chosen for incubation i.e. grassland and arable
from Beijing Forestry University area (40°002 252
N, 116°202 40"E) in Beijing, China.
Thus, Beijing has a rather dry, monsooninfluenced
humid continental climate (Köppen
climate classification ), characterized by hot, humid
summers due to the East Asian monsoon, and
generally cold, windy, dry winters that reflect the
influence of the vast Siberian anticyclone. Spring can
bear witness to sandstorms blowing in from the Gobi
Desert across Mongolian steppe, accompanied by
rapidly warming, but generally dry, conditions.
Autumn, like spring, sees little rain, but is crisp and
short (Zhao, 2011). Fig.1 showsthat the monthly daily
average temperature in January is -3.7 °C (25.3 °F),
while in July it is 26.2 °C (79.2 °F) .
Precipitation averages around 570 mm (22.4 in)
annually, with close to three-fourths of that total
falling from June toAugust (Fig.1). Table1 showsthat
with monthly percent possible sunshine ranging from
47% in July to 65% in January and February, the city
receives 2.671 hours of bright sunshine annually.
Extremes have ranged from -27.4 °C (-17 °F) on 22
February 1966 to 42.6 °C (109 °F) on 15 June 1942
falling from June to August (Table1). With monthly
percent possible sunshine ranging from 47% in July
to 65% in January and February, the city receives
2.671 hours of bright sunshine annually (Table1).
Extremes have ranged from -27.4 °C (-17 °F) on 22
MATERIALS & METHODSTwo soils under different management practiceswere chosen for incubation i.e. grassland and arablefrom Beijing Forestry University area (40°002 252N, 116°202 40"E) in Beijing, China.Thus, Beijing has a rather dry, monsooninfluencedhumid continental climate (Köppenclimate classification ), characterized by hot, humidsummers due to the East Asian monsoon, andgenerally cold, windy, dry winters that reflect theinfluence of the vast Siberian anticyclone. Spring canbear witness to sandstorms blowing in from the GobiDesert across Mongolian steppe, accompanied byrapidly warming, but generally dry, conditions.Autumn, like spring, sees little rain, but is crisp andshort (Zhao, 2011). Fig.1 showsthat the monthly dailyaverage temperature in January is -3.7 °C (25.3 °F),while in July it is 26.2 °C (79.2 °F) .Precipitation averages around 570 mm (22.4 in)annually, with close to three-fourths of that totalfalling from June toAugust (Fig.1). Table1 showsthatwith monthly percent possible sunshine ranging from47% in July to 65% in January and February, the cityreceives 2.671 hours of bright sunshine annually.Extremes have ranged from -27.4 °C (-17 °F) on 22February 1966 to 42.6 °C (109 °F) on 15 June 1942falling from June to August (Table1). With monthlypercent possible sunshine ranging from 47% in Julyto 65% in January and February, the city receives2.671 hours of bright sunshine annually (Table1).Extremes have ranged from -27.4 °C (-17 °F) on 22
การแปล กรุณารอสักครู่..