發(fā)布時間：2018-08-22 15:17

【摘要】：連續(xù)2年以廈門市區(qū)臘腸樹、樟樹和善提樹3種園林樹種為試材,研究比較了滯塵量的差異及其生態(tài)特性。結果表明:不同園林樹種滯塵能力差異顯著(P0.05),滯塵量基本表現(xiàn)為臘腸樹樟樹菩提樹,臘腸樹的滯塵量是菩提樹的2倍左右;對葉面塵粒徑分析表明,葉面塵中滯留的顆粒物中大多數(shù)是TSP(懸浮顆粒物),同時不同園林樹種對PM_(10)和PM_(2.5)均有一定量的吸收,降塵物中PM_(2.5)PM_(10)和TSP相對含量均以臘腸樹最高,樟樹和菩提樹較低,其中3種植物TSP差異并不顯著(P0.05);不同樹種降塵粒徑主要分布在2.5-100μm,葉面降塵中顆粒物牲徑集中分布在100μm以下(占99%以上),降塵物主要為在大氣中經(jīng)一定距離漂移的TSP;葉綠素a和葉綠素b趕含量呈現(xiàn)出一致的變化規(guī)律,依次表現(xiàn)臘腸樹樟樹菩提樹,可溶性蛋白依次表現(xiàn)臘腸樹樟樹菩提樹,可溶性糖表現(xiàn)為臘腸樹菩提樹樟樹,且三者之間差異均顯著(P0.05);不同園林樹種比葉重(x)與葉片滯塵能力(y)之間的冪函數(shù)關系最佳(P0.001),即比葉重較大的植物滯塵能力則較大。相關性分析表明:廈門市不同園林樹種滯塵量與葉片生態(tài)特性具有較強的相關性,其中葉綠素的影響較大。
[Abstract]:Three garden tree species, sausage tree, camphor tree and alpine tree in Xiamen urban area for 2 years, were used to study the difference of dust retention and its ecological characteristics. The results showed that the dust retention ability of different garden tree species was significantly different (P0.05). The dust retention amount of sausage tree camphor and sausage tree was about 2 times that of Bodhi tree, and the dust particle size of leaf dust was about 2 times of that of Bodhi tree. Most of the particles remaining in leaf dust were TSP (suspended particulate matter). At the same time, PM10 and PM2.5 were absorbed by different garden trees. The relative contents of PM _ (2.5) PM10 and TSP were the highest in sausages, but lower in camphor and bodhi trees. There was no significant difference in TSP among the three plants (P0.05), the particle size of different tree species was mainly distributed in 2.5-100 渭 m, and the diameter of particulate matter in leaf dust was less than 100 渭 m (more than 99%). The contents of chlorophyll a and chlorophyll b showed the same change rule. In turn, sausage tree camphor, soluble protein, sausage camphor, soluble sugar, sausage, camphor, There were significant differences among the three species (P0.05); the power function relationship between Ye Zhong (x) and leaf dust retention ability (y) was the best (P0. 001), that is, larger than Ye Zhong. The correlation analysis showed that there was a strong correlation between the dust retention of different garden tree species and the ecological characteristics of leaves in Xiamen, especially the effect of chlorophyll.
【作者單位】： 福州大學建筑學院;廈門大學建筑與土木工程學院;
【基金】：福建省自然科學基金面上項目“基于廊道優(yōu)先理論的福廈城市綠地系統(tǒng)功能評價及其優(yōu)化研究”(2016J01732)
【分類號】：S688;X513

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