【摘要】 通过祁连山水源涵养林区水质化学元素分析表明:降水经青海云杉林林冠层作用后各化学元素总含量呈增加趋势,增幅最大的元素为Zn,其含量高出降水5 580mg/L,各化学元素含量从大到小为Zn>Ca>K>Mg>Fe>P>Mn>Cu>N;降水经灌木林冠层作用后各化学元素中Ca元素的增幅最大,高出降水含量1 737mg/L,各元素含量变化顺序为Ca>K>Mg>P>Fe>N>Mn>Cu>Zn;白大板流域径流中Mg、Ca、K的增加幅度较大,分别为158 16mg/L,85 965mg/L和9 266mg/L;Fe、P、Cu的增幅较小,分别为0 335mg/L,0 033mg/L和0 0132mg/L。更多还原

【Abstract】 Though analyzing water quality chemical element in the water conservation forest of qilian Mountain, we can draw some conclusions as follow. The total content of every chemical element in precipitation take on an increasing trend after the canopy class action of Pocea crassofolia forest. The most amplitude chemical element is Zn, whose content is 5.580 mg/L more than that of precipitation, and the total content of every chemical element presents a trend Zn>Ca>K>Mg>Fe>P>Mn>Cu>N. Ca is the most amplitude chemical element after the canopy class action of shrubbery, and its content is 1.737 mg/L more than that of precipitation. The changing rule of chemical element is Zn>Ca>K>Mg>Fe>P>Mn>Cu>N. In the Baidaban drainage area, the amplitude of Mg, Ca, and K is relative big, and their value is 158.16 mg/L, 85.965 mg/L and 9.266 mg/L respectively.However, the amplitude of Fe, P, and Cu is relative small, and their value is 0.335 mg/L, 0.033 mg/L and 0.013 2 mg/L respectively.更多还原