Air pollution tolerance index: An approach towards the effective green belt around Kathmandu metropolitan city, Nepal
Air pollution tolerance index: An approach towards the effective green belt around Kathmandu metropolitan city, Nepal
复制标题
空气污染容忍指数：尼泊尔加德满都大都市周围有效绿化带的方法
DOI：
--
复制
发表时间：
2016
期刊：
影响因子：
--
通讯作者：
Rejina Maskey
中科院分区：
文献类型：
--
作者：
K. Kanwar;M. Dhamala;Rejina Maskey
道路植被是减少道路产生的颗粒物的有效途径。城市中心空气污染容忍度指数(APTI)值高的绿地对改善空气质量具有重要作用。对丰度较高的树种进行了pH值、抗坏血酸、总叶绿素和相对含水量等生化参数的测定。不同树种的APTI值为5.56(石榴)~79.99(三角木)。Apti值越高，对空气污染的容忍度越高。在这些树种中，紫花青杨、刺梨、无花果、南美天牛、赤杨、石榴、木荷、梨、石榴为感病树种，而波斯、黑杨、山杨、石榴为感病树种。和大青藤是最耐受的树种。绿化带中耐受到中等耐受树种的数量越多，空气污染汇越好，空气质量也越好。为了找到APTI值较高的植物，应进一步开展广泛的研究，河谷型人工林规划应优先选择APTI值较高的植物。
Road vegetation is an effective way to mitigate road generated particulates. Green belts with high Air Pollution Tolerance Index (APTI) value in the urban centers play an important role in the amelioration of the air quality. The APTI of the trees with higher abundance were examined for bio-chemical parameters such as pH, ascorbic acid, total chlorophyll and relative water content. The APTI value of tree species varied from 5.56 ( Punica granatum ) to 79.99 ( Populous deltoids ). Higher the APTI value, higher is the tolerance towards air pollution. Among the tree species, Jacaranda mimosifolia, Pinus roxburghi, Ficus benjamin, Celtis australis, Alnus nepalensis, Callistemon lanceolatus, Schima wallichi, Pyrus pyrifolia and Punica granatum were found sensitive, whereas Prunus persia, Populus deltoides, Thuja sp. and Grevillea robusta were found to be the most tolerant species. The green belts constituting higher number of tolerant to moderately tolerant species of trees results in better air pollution sink and air quality refinement. In order to find plants with good APTI, further extensive studies should be carried out and valley plantation program should give priority of those plants having higher APTI value.