Monitoring And Evaluation Of Ecological Benefit Of The Ecological Rehabilitation Region In The Maoping Watershed Of Mengyin County

Study on Plant Diversity, soil physical, soil physical properties, water retention benefit, negative air ions in the area of soil and water conservation and ecological rehabilitation. The research of ecological restoration project has obvious ecological benefit. Main conclusions are as follows:1,Each plant diversity and richness improved after ecological restoration project. richness indexes (DMA), Shannon - Wiener' s diversity index (H') of protected forest is higher than other types of repair. Richness of the mixed forest is higher than that of pure forest. In land conservation measures, Richness of protected terrace is improver than cultivating terrace. Therefore, in order to increasing and improving the ecological effects of biological diversity, to repair the area should be fully banned feeding terrace, prohibit all farming activities or reduce the cradle of farming land. After the terrace of steep crops, basis should be banned, should try to introduce appropriate for afforestation trees, to promote and improve the recovery of biodiversity.2,The soil non-uniform coefficient of ecological forest is higher 59.2% than plantedforest. Soil non-uniform coefficient of mixed forest higher 52.63 % than pure forest, soil fractal dimension (average for 2.666) is higher than the average of pure forest (2.444). Whether natural or plantedforest,soil density (average for 1.176 g/cm~3) of mixed forest were less than pure forest (average for 1.287 g/cm~3). The hillsides planting afforestation plant communities after the repair soil density than before repair reduced 0.116 g/cm~3, 0.238 g/cm~3,Two types of farmland conservation measures after repair than before repair a significant reduction. Whether natural or mixed plantations, soil porosity, capillary porosity and the capillary porosity are superior to pure forest. The repair measures can be seen all good soil porosity, permeability increase of soil. Ecological restoration of plant communities after the soil particle non-uniform coefficient, the fractal dimension of soil and soil and soil porosity density condition of soil structure parameters as superior to repair, namely after before repair soil particle inhomogeneity, soil and soil density and soil full-transparency than before repair. Whether natural or plantation, the structural characteristics of soil mixed with porosity parameters are superior to pure forest, therefore vegetation restoration should pay attention to the combination of multiple tree species, favors the forest soil structure.3,Soil ability to store and conserve water of Ecological restoration increased efficiency. that of natural water saturation storage and water of protectedforest (average 1262.4 t/t/hm~2 and 323.4 hm~2) was obviously higher than average for 1103.6 plantation (t/t/hm~2 and 244.3 hm~2). Soil ability to store and conserve water of the open forest and hillsides planting improving 10.5% and 6.6 %, that of average steady infiltration rate for 6.89 mm/min, higher than the pure forest 2.36 mm/min. ability to store and conserve water for open forest and hillsides planting were improved 201 mm/min and 3.30 mm/min. Land conservation tillage, technology of level terrace was improved obviously, slope of terrace apple repair soil water infiltration capacity increased 1.44 mm/min.4,negative air ions concentration of ecological restoration increased, For the average of FCI in protected forest is 0.785ecological forest stand average higher. Forest airiness is weaker, air negative density is lower, so the FCI value is quite low. negative air ions concentration of open forest increased to 0.84, improve 238%. Chinese chestnut of air negative values are the FCI farmland improving (1.10), improved (129% and 308%). Farmland conservation repair and the conservation tillage technology economic efficiency, conservation tillage technology of air negative son concentration than before repair (FCI).5,The correlation of open forest about different ecological restoration measures is 0.9228, followed by that of level terrate forest with high grade for 0.9023. The lowest correlation is natural protection technology, which is 0.5423 degree. We must to protect virgin forests and replenish many trees for open foret, It is for this reason that ecological benefit is improved in the ecological restoration project demonstration.