Studies On The Efficiency Monitoring Of Ecological Rehabilitation Project Of Soil And Water Conservation In Laiwu

Ecological Rehabilitation Project of Soil and Water Conservation in Laicheng is one of experimental projects of National Soil and Water Conservation ecological restoration project . It studies on Laiwu ecological restoration project of Soil and Water Conservation District ,Monitor and analysis the ecological, economic and social benefits after different types of ecological restoration using macro and micro combined monitoring, combined remote sensing information monitoring and artificial combined manual observations on the spot, combined long-term continuous observation and short-term temporary observation and time series sequence compare with the space observation methods. The result indicated that the ecological rehabilitation project of soil and water conservation had got obvious ecological, economic and social efficiency. The main results are as flowing:(1)Ecological restoration measures ClassificationOn the basis of Comprehensive Surveying the project area, according to the site type, the existing situation and the purpose of the restoration, at the same time combining ecological restoration project of technical features and benefits, Ecological restoration will be a pilot project for the regional ecological restoration measures divided into two major categories and four sub-categories.(2)The soil structure parameters were improvedAccording to the manmade forest closing, the soil MWD of broad-leaved forest(1.95) is bigger than which of coniferous forest (1.82 ). After ecological rehabilitation the MWD of supplement planting of sparse forest, the uncultivated land closing, shrubs closing and artificial forest were increased 0.1,0.02,0.14 and 0.12. From the soil FD, the broad-leaved forest (2.46) were smaller than the single forest (2.48). After ecological rehabilitation the soil FD of supplement planting of sparse forest, the uncultivated land closing , shrubs closing and artificial forest were decreased0.04,0.03, 0.03 and 0.02.(3)The soil density was lowerThe soil density of broad-leaved forest (1.11 g/cm3)is smaller than which of coniferous forest in manmade forest closing(1.14 g/cm3). After ecological rehabilitation the FD of supplement planting of sparse forest, the uncultivated land closing, shrubs closing and artificial forest measure were decreased 0.02 g/cm3,0.08 g/cm3,0.03 g/cm3 and 0.13g/cm3, artificial forest measure was decreased mostly.(4)The soil porosity was improvedAs the soil porosity, the mean soil total porosity, capillary porosity and non-capillary porosity of the broad-leaved forest and the coniferous forest were (51.17%,47%),(32.34%,31.94)and(18.83%,15.2). After ecological rehabilitation the mean soil total porosity, capillary porosity and non-capillary porosity of supplement planting of sparse forest, the uncultivated land closing, shrubs closing and artificial forest measure were increased (4.26%,0.59%,3.66%),(1.56%,0.34%,1.22%),(2.45%,0.95%,1.49%)and(4.21%,3.7%,0.51%).(5)The soil moisture was obviously increasedIn manmade forest closing measure, the soil moisture of the broad-leaved forest(25mm) is higher than which of the coniferous forest(24.09mm). After ecological rehabilitation the soil moisture of supplement planting of sparse forest, the uncultivated land closing, shrubs closing and artificial forest measure were increased 1.34mm,0.41mm,3.2mm and 3mm.(6)The soil infiltration was obviously increasedAfter ecological rehabilitation the mean soil infiltration, capillary porosity and non-capillary porosity of supplement planting of sparse forest, the uncultivated land closing, shrubs closing and artificial forest measure were increased (3.48mm/min,2.42mm/min,2.23mm/min,2.58mm/min),compare with wild slope,the average soil infiltration of manmade forest was increased 3.59 mm/min.Above all, the ecological rehabilitation efficiency of item region was better, but it still existed ecological frail tache and need increase the forest closing and afforestation intensity, it let the forest vegetation cover degree and community cover degree improve, the forest vegetation structure was more reasonable so as to the function and efficiency was exerted better.