作 者：
梁景森;Naresh V.Thevathasan
单 位：
加拿大圭尔夫大学环境生物系圭尔夫N1G2W1;中国林业科学研究院森林生态环境与保护研究所
关键词：
林间套种;温室气体;矿化作用;土壤呼吸;碳汇;碳当量
摘 要：
During the study at the University of Guelph(May to Nov.,2001), the auther took part in the ecological and environmental investigations in the tree based intercropping system in the southern Ontario, Canada. Through a series of studies on nitrogen mineralization, soil respiration and carbon sequestration, the competitive and complementary relations between trees and crops in the tree_based intercropping system are revealed. The impacts of the system on the environment, such as greenhouse gases emission reduction and carbon balance in the globe, are brought to light as well. N 2O emission from the tree_based intercropping system is 0 69?kg·hm -2 a -1 less than the monocropped agricultural field. The carbon storage of poplar_based intercropping system by age 14?a reaches 12?t·hm -2 The leaf litters from poplar will add 1 3?t·hm -2 a -1 organic carbon to the soil. As compared to monocropped wheat farm, the carbon sink of tree_wheat intercropped system is 1 776?t·hm -2 a -1 , whereas the wheat farm is just 0 264?t·hm -2 a -1 .
译 名：
THE CARBON BALANCE AND NITROGEN BALANCE IN THE AGROFORESTRY SYSTEM, SOUTHERN ONTARIO, CANADA
作 者：
Liang Jingsen (Institute of Forest Ecology, Environment and Protection CAF\ Beijing100091) Naresh V.Thevathasan (Department of Environmental Biologe,University of Guelph\ Guelph Ontario Canada N1G 2W1)
关键词：
Tree_based intercropping, Greenhouse?gases, Nitrogen mineralization, Soil respiration, Carbon sink, Carbon equivalent
摘 要：
During the study at the University of Guelph(May to Nov.,2001), the auther took part in the ecological and environmental investigations in the tree based intercropping system in the southern Ontario, Canada. Through a series of studies on nitrogen mineralization, soil respiration and carbon sequestration, the competitive and complementary relations between trees and crops in the tree_based intercropping system are revealed. The impacts of the system on the environment, such as greenhouse gases emission reduction and carbon balance in the globe, are brought to light as well. N 2O emission from the tree_based intercropping system is 0 69?kg·hm -2 a -1 less than the monocropped agricultural field. The carbon storage of poplar_based intercropping system by age 14?a reaches 12?t·hm -2 The leaf litters from poplar will add 1 3?t·hm -2 a -1 organic carbon to the soil. As compared to monocropped wheat farm, the carbon sink of tree_wheat intercropped system is 1 776?t·hm -2 a -1 , whereas the wheat farm is just 0 264?t·hm -2 a -1 .
