CAJ | 학술논문

本文通过对卧龙自然保护区不同海拔分布梯度上的川滇高山栎不同年龄叶片营养元素含量的研究表明：（1）当年生叶营养元素含量大小排序为N〉K〉Ca〉P〉Mg,分别为1.45%、0.75%、0.49%、0.17%和0.13%;N、P含量随海拔呈现先下降后升高的趋势,即在海拔2 400 m和2 800 m较低;K含量随海拔升高而升高;Ca、Mg含量随海拔升高而降低。（2）老叶营养元素含量大小排序为N〉Ca〉K〉P〉Mg,分别为1.08%、0.79%、0.40%、0.16%和0.11%;N含量随海拔升高而升高;P、K、Ca、Mg含量呈现先升高后下降的趋势,即在海拔2 400 m和2 800 m较高。（3）N、K、Mg含量呈现当年生叶比老叶高的趋势;P含量除2 600 m以外,老叶的含量比1年生叶低;Ca含量在海拔2 400 m以上出现老叶比1年生叶高,海拔2 000 m为1年生叶比老叶高;（4）N/P比值,当年生叶范围在7.83～9.50,随着海拔的升高而降低;老叶范围在5.25～9.00,具有随着海拔的升高先下降后升高的趋趋势。C/N比值,当年生叶范围在31.91～40.18,老叶范围在44.34～56.04,总趋势为随着海拔的升高而降低。P/K比值,当年生叶范围在0.20～0.28,老叶范围在0.31～0.48;当年生叶随着海拔升高呈现先降低后升高的趋势;老叶随着海拔升高呈现先升高后降低的趋势。K/Ca比值,当年生叶范围在0.83～3.91,老叶范围在0.39～0.65;当年生叶随着海拔的升高而增大,老叶随着海拔升高呈现先升高后降低的趋势。K/Mg比值,当年生叶范围在3.56～10.75,老叶范围在2.50～6.00,总趋势为随着海拔的升高而增大。
본문통과대와룡자연보호구불동해발분포제도상적천전고산력불동년령협편영양원소함량적연구표명：（1）당년생협영양원소함량대소배서위N〉K〉Ca〉P〉Mg,분별위1.45%、0.75%、0.49%、0.17%화0.13%;N、P함량수해발정현선하강후승고적추세,즉재해발2 400 m화2 800 m교저;K함량수해발승고이승고;Ca、Mg함량수해발승고이강저。（2）로협영양원소함량대소배서위N〉Ca〉K〉P〉Mg,분별위1.08%、0.79%、0.40%、0.16%화0.11%;N함량수해발승고이승고;P、K、Ca、Mg함량정현선승고후하강적추세,즉재해발2 400 m화2 800 m교고。（3）N、K、Mg함량정현당년생협비로협고적추세;P함량제2 600 m이외,로협적함량비1년생협저;Ca함량재해발2 400 m이상출현로협비1년생협고,해발2 000 m위1년생협비로협고;（4）N/P비치,당년생협범위재7.83～9.50,수착해발적승고이강저;로협범위재5.25～9.00,구유수착해발적승고선하강후승고적추추세。C/N비치,당년생협범위재31.91～40.18,로협범위재44.34～56.04,총추세위수착해발적승고이강저。P/K비치,당년생협범위재0.20～0.28,로협범위재0.31～0.48;당년생협수착해발승고정현선강저후승고적추세;로협수착해발승고정현선승고후강저적추세。K/Ca비치,당년생협범위재0.83～3.91,로협범위재0.39～0.65;당년생협수착해발적승고이증대,로협수착해발승고정현선승고후강저적추세。K/Mg비치,당년생협범위재3.56～10.75,로협범위재2.50～6.00,총추세위수착해발적승고이증대。
In this paper, investigations were made on the concentration of macronutrients （ N, P, K, Ca and Mg） in the leaves of Q. aquifolioides. The results were summarized as follows. （ 1 ） The characteristic con- tents of macronutrients in the annual leaves of Q. aquifolioides were N 〉 K 〉 Ca 〉 P 〉 Mg, and they ac- counted for 1.45% ,0. 75% ,0. 49% ,0. 17% and 0. 13% respectively;The N and P contents decreased rapidly first and then increased with the increasing elevation, namely being relatively low at the altitudes between 2 400 m and 2 800 m; Likewise, the K content increased with the increasing elevation and the Ca andMg contents decreased with the increasing elevation ; （2） The characteristic contents of macronutri-ents in aged leaves of Q. aquifolioides were N 〉 Ca 〉 K 〉 P 〉 Mg, and they accounted for I. 45%, 0. 75% ,0. 49% ,0. 17% and 0. 13% respectively;The N content increased with the increasing elevation and the P, K, Ca and Mg contents increased rapidly first and then decreased with the increasing elevation, namely, being relatively high at the altitudes between 2 400 m and 2 800 m ; （3） The N, K and Mg con- tents in the annual leaves were higher than those in aged leaves; The P content of annual leaves was lower than that of aged leaves except at the altitudes of 2 600 m ;The Ca content of aged leaves was lower than that of annual leaves at the altitudes of abive 2 400 m and the Ca content of annum leaves was higher thanthat of aged leaves at the altitudes of 2000m ; （4） As for the ratio of N/P, the range of the annual leave was 7. 83 ~ 9.50, and the figurs would shrink with the increase of the altitude ; the range of the aged leav- es was 5.25 - 9.00, beginning with the increase, subsequently decreasing; As for the ratio of C/N, the range of the annual leaves was 31.91 -40. 18 ,the range of the aged leaves was 44. 34 -56. 04 ,the over- all trend was to decrease with the increase of the altitude ; As for the ratio of P/K, the range of the annual leaves was 0. 20 -0. 28 and the range of the aged leaves was 0. 31 -0. 48. The trend of the annual leaveswas to begin with the decrease, subsequently increase with the increase of the altitude; The trend of the aged leaves was to begin with the increase, subsequently decrease with the increase of the altitude. As for the ratio of K/Ca,the range of the annual leaves was 0. 85 -3, 91 and the range of the aged leaves was 0. 39-0. 65. The trend of the annum leaves was to shoot up with the increase of the altitude ; The trend of the aged leaves was to begin with the increase, subsequently decrease with the increase of the altitude. As for the ratio of K/Mg,the range of the annual leaves was 5.56 -10. 75 ,and the range of the aged leaves was 2. 50 -6. 00. The overall trend was to increase with the increase of the altitude.