摘要
对天童国家森林公园 1 8种植物在落叶前后营养转移量的研究表明 ,不同植物的营养转移率不尽相同 ,N的平均转移率为 3 7.86% ,标准偏差 1 0 .67% ;P的平均转移率为 44.76% ,标准偏差 1 5 .40 %。经方差分析 ,N、P转移率无明显差异 (s=0 .1 3 8)。同时 ,P的转移率与植物成熟叶中的P含量及N/P存在正相关 ,而N的转移率与植物成熟叶子的N含量和N/P不相关。另外 ,常绿植物的N转移率平均值是 3 5 .74% (标准差9.46% ) ,落叶植物N转移率平均值是 3 8.72 % (标准差 1 2 .65 % ) ;常绿植物的P转移率平均值是 3 7.72 % (标准差 1 3 .0 0 % ) ,落叶植物P转移率平均值是 5 5 .3 7% (标准差 1 5 .5 4% )。对落叶和常绿阔叶二种生活型植物进行ANOVA分析 ,表明N转移率无明显差异 ,而P转移率有差异 (P <0 .0 5 )。
In the present paper,leaf nutrient resorption of 18 trees in Tiantong forest park were studied. The results are as follows:different trees have different leaf nutrient resorption. Average N resorption rate was 37.86%;SD was 10.67%. Average P resorption rate was 44.76%;SD was 15.40%. There are no difference between N and P resorption rate according to analysis of variance. P resorption rate was positive correlated with N/P and P content in maturity leaf,but N resorption rate wasn’t correlated with N/P and N content in maturity leaf. To evergreen trees,average N resortion rate was 35.74%(SD=9.46%),and average P resorption rate was 37.72%(SD=13.00%). As for deciduous, average N and P resorption rate were 38.72%(SD=12.65%)and 55.37%(15.54%)respectively. According to ANOVA analysis,two life forms between evergreen and deciduous have not distinct difference in N resorption rate and have some difference in P resorption rate.
出处
《广西植物》
CAS
CSCD
北大核心
2004年第1期81-85,96,共6页
Guihaia
基金
国家自然科学基金重点项目资助 (30 130 0 6 0 )
上海市重点学科资助项目
