锐齿栎林生态系统对水质的影响及评价

应用系统学方法,研究了秦岭火地塘林区大气降雨经过锐齿栎森林生态系统各层次前后的水质变化,并应用模糊数学分级评价法,评价了系统各层次对水质的影响效果及程度.该林区大气降雨中N、P、K等15种元素的总含量为19.874 mg/L,水质符合<地面水环境质量标准>(GB3838-88)Ⅱ类水(可靠度为85),已受到一定程度的污染;经过系统各层次的净化后,水质符合Ⅰ类水(可靠度为100).系统的净化程度为88.4,其中,植物层、枯落物层、土壤层的净化程度分别为66.69、23.67、-1.96.

Effects and Estimation of Quercus aliena var. acuteserrata Forest Ecosystem on Water Quality

Water quality transformation of different layers of Quercus aliena var. acuteserrata forest ecosystem after rainfall at Huoditang in the Qinling Mountains were studied by using system methods. Meanwhile impact and extent on water quality of system administrative levels were valued by using blur math classification. The total content of N,P,K, etc, in the rainfall was 1.984 mg/L, water quality conformed the second water of "environment quality standard of ground water" (GB3838 -88) (credibility degree is 85% ) , to some extent. But after the cleanness of system, water quality conformed the first class (credibility degree is 100% ). The leanness extent was 88.4% , of which the extent of plants, drop layers, and soil were 66. 9% , 23. 67% , - 1. 96% respectively.