摘要
本文对朝阳市公路绿化树种进行了调查,并且建立了公路绿化5种树木的叶面积方程,利用LI-6400光合仪测定出朝阳市公路绿化树种的年吸收CO_2量26 202.9 t,年放O_2量1025 t,年蒸腾总量15 017 t,年蒸腾吸热量587 672 689 kJ。运用环境效益评价法估算出朝阳市公路绿化树种年吸收CO_2量总价值为27 574 559元,年放O_2量总价值为6 543 073元,年蒸腾吸热总价值为2 459 004元,总经济价值达36 576 639元。
In this paper, leaf area regression equation for 5 kinds of trees of road in Chaoyang was established, and presently ecological benefits of trees measured and calculated by using LI-6400 Photosynthesis system were as follow： annual CO2 intake was 26 202.9 t;annual O2 discharge was 1 025 t;annual transpiration was 15 017 t;annual heat absorbed for transpiration was 587 672 689 kJ. Economic benefits estimated by environmental benefit evaluation methods were： 27 574 559,6 543 073 and 2 459 004 yuan for annual CO2 intake, 02 discharge and annual heat absorbed for transpiration respectively, and total economic values were 36 576 639 yuan.
出处
《西北林学院学报》
CSCD
北大核心
2007年第4期199-202,共4页
Journal of Northwest Forestry University
关键词
树种
生态经济效益
公路
朝阳
tree species
ecological economic benefit
road
Chaoyang
