Research On Efficiency Evaluation And Ecological Compensation Response Of Returning Cultivated Land To Woodland Or Grassland

After Returning Cultivated Land to Woodland or Grassland, the static efficiencyand dynamic effects of woodland was estimated. The outcome can test and optimizethe quality of the compensation policy and standards.Returning Cultivated Land toWoodland or Grassland is the Background of this study. Theoretic of RestorationEcology, Environmental Economics, Sustainable Development, Game Theory andPolitical Economy are the theoretical basis. In the first instance of this study, I learnand optimized the benefits estimation methods of water conservation, soilimprovement, etc. Secondly, the content, methods and procedures of the static anddynamic performance evaluation, that coming with Returning Cultivated Land toWoodland or Grassland, were systematic expositioned. In the next place, taken thepartial date of Nanzhao county’s Returning Cultivated Land to Woodland orGrassland for an example, its dynamic efficiency was computed and was comparedwith the standard of compensation. Then, the related policy, compensation standardand farmers’ respond were analyzed. Finally, the dynamic loop compensation modewas studied.The main conclusions are as follows:(1) The benefits estimates of Returning Cultivated Land to Woodland orGrassland include the value of water conservation, the value of soil improvement, thevalue of clean air, the value of biodiversity conservation and the value of economicoutput. And the calculation methods were listed. The result was9.3018million Yuana year, which was the total value of all kinds of static efficiency of9046.51muwoodlands that changed from cultivated land in Nanzhao County, and could beequivalence to1028Yuan per mu in a year. Each kind of static efficiency could bearranged as follows: the value of water purification＞the value of conservation ofbiological diversity＞the value of stored water＞the value of flood and droughtrelease＞the value of fixed soil and fertilizer＞the value of fixed CO2manufacturing O2＞the value of reduce siltation＞the value of absorption of SO2 ＞the value of block dust.(2) Respective Coefficient Method and Combined Coefficient Method, the twodynamic efficiency calculate methods that combined with forest growth curve, wereproposed. The author calculate the county on the dynamic benefits of Pinusmassoniana, and extract the dynamic benefits of land with a function of time. y=195.06Ln(x)+545.2. It is expected to2015, the dynamic benefits of pinusmassoniana are1062.36yuan/mu, which is more than74.87Yuan to Static benefits.After Returning Cultivated Land to Woodland or Grassland, the benefits inctreasedyear by year. When the trees get into the stable period, the speed will grow slowly.(3) Referring to the national formulation of the Yangtze River basin landcompensation standard of Hanjiang River. The compensation standard of pinusmassoniana after2008is365Yuan/mu in Nanzho County. The calculation results ofdynamic efficiency about Returning Cultivated Land to Woodland or Grassland inNanzhao County shout that the dynamic benefits of Returning Cultivated Land toWoodland or Grassland outweigh the compensation standard, and the difference in acertain period of time will continue to pull big.(4) Preliminary built the mode of Returning Cultivated Land to Woodland orGrassland dynamic compensation. The pattern expected by strengthens the investmentintensity of Returning Cultivated Land to Woodland or Grassland, broadens thechannel of the source of the compensating fund, and fully mobilizes the enthusiasm offarmers in this area. From this way, we can make the project of Returning CultivatedLand to Woodland or Grassland goes on the road of sustainable development. Thespecific measures of Returning Cultivated Land to Woodland or Grassland whichinclude compensating fund, building green community, executing grade differencecompensation system are set up.