Forestry eco-environmental quality evaluation in mountainous regions of Hebei Province

Based on the successive inventory data in mountainous regions of Hebei Province,the composite indicator system of regional forestry eco-environmental quality evaluation was proposed.The authors suggested that the system should be composed of three aspects including the background of eco-environmental quality,status of forestry growth and naturality of forests.The value of forestry eco-environmental quality evaluation for mountainous regions of Hebei Province was analyzed from 1988 to 2001 by using the method of AHP, ecological elements quality scale marking and the weighed averages composite quality index.The results were as follows:1)the forestry eco-environmental quality evaluation of mountainous regions of Hebei Province had some fluctuation from 1988 to 2000,but had a tendency toward good changes;2)the proportions of three forestry eco-environmental quality grades were very lopsided,and the middle grade was the biggest one.It shows that there are great potentials to increase forestry eco-environmental quality in mountainous regions of Hebei Province;3)the indexes of mean value of naturality of forest show a tendency to decline over time since 1988.It indicates that the forests in this region are increasingly affected by disturbance from human activities.