Chemical property of precipitation in Pinus tabuleaeformis water resource pr otection forest in Miyun Reservoir watershed

Abstract

Abstract: The studies on the chemical property of precipitation in Pinus tabuleaeformis water resource protection forest in Miyun Reservoir watershed showed that the concentration of chemical elements of total precipitation was 12.001mg稬^-1 and varied greatly during the mainly rainfall period.Water chemical elements contained was in the order of Ca>N>K>Mg>Na>P>Fe>Zn>Cu>Mn. The contents of chemical elements of through fall and stem flow were various, but the total contents increased in comparison with that of the precipitation. The concentrat ion of total chemical elements of through fall and stem flow are 20.614 and 73.324mg稬^-1, respectively, with 8.613 and 61.323mg稬^-1 more than th at out forest respectively. The reason that total chemical element concentration in the through fall and stem flow raised greatly is that the K concentration enhanced enormously. The K contents of through fall and stem flow were nearly 3 times and 25 times as large as the precipitation chemical element concentratio n, respectively.

CLC Number:

S713

LIU Shihai, YU Xinxiao, YU Zhimin . Chemical property of precipitation in Pinus tabuleaeformis water resource pr otection forest in Miyun Reservoir watershed[J]. Chinese Journal of Applied Ecology, 2001, (5): 697-700.

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