Life Science and Environmental Research Institute, King Abdulaziz City for Science and Technology, P.O. Box: 6086, Riyadh, 11442, Saudi Arabia.
Plant Production Department, College of Food and Agricultural Sciences, King Saud University, P.O. Box 2460, Riyadh, 14451, Saudi Arabia.
Environ Sci Pollut Res Int. 2020 Aug;27(23):29156-29170. doi: 10.1007/s11356-020-09226-w. Epub 2020 May 20.
Tree species (including Eucalyptus camaldulensis, Ziziphus spina-christi, Albizia lebbeck, Prosopis juliflora, Pithecellobium dulce, and Ficus altissima) were investigated to elucidate their appropriates for green belt application. Leaf samples were collected from four different locations in Riyadh: (1) residential; (2) dense traffic; (3) industrial; and (4) reference sites located approximately 20 km away from the city of Riyadh. Leaves collected from the industrial site showed the highest leaf area reduction. The smallest reduction of leaf areas was observed for F. altissima (11.6%), while the highest reduction was observed for P. juliflora (34.8%). Variations in the air pollution tolerance index (APTI) coupled with the anticipated performance index (API) for each species were examined. The APTI value of Z. spina-christi was highest (58.5) at the industrial site while the lowest APTI value was for P. juliflora (14) at the reference site. Correlation coefficient and linear regression analyses determined that the correlation between the ascorbic acid content and APTI is positive and significantly strong. Our findings indicate that urban green planning in Riyadh should include growing F. altissima on roadsides as well as in heavy industrial locations followed by Z. spina-christi and A. lebbeck according to their API and APTI performances.
对树种（包括桉树、沙棘、相思树、刺槐、甜叶菊和印度榕）进行了调查，以阐明它们适合作为绿化带的应用。从利雅得的四个不同地点采集了叶片样本：（1）居民区；（2）交通密集区；（3）工业区；（4）距离利雅得市约 20 公里的参考点。工业区的叶片显示出最高的叶面积减少。观察到 F. altissima（11.6%）的叶面积减少最小，而 P. juliflora（34.8%）的叶面积减少最大。检查了每个物种的空气污染物耐受指数（APTI）和预期表现指数（API）的变化。Z. spina-christi 在工业区的 APTI 值最高（58.5），而 P. juliflora 在参考点的 APTI 值最低（14）。相关系数和线性回归分析确定，抗坏血酸含量与 APTI 之间的相关性是正相关且显著强。我们的研究结果表明，利雅得的城市绿化规划应包括在道路两旁和重工业地区种植 F. altissima，其次是 Z. spina-christi 和 A. lebbeck，根据它们的 API 和 APTI 表现。
