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| Evaluation of ecological effects of the project of conversion of cropland to forest in Hebei Province |
| Wang Hongxia1, Wang Xuesong2, Wang Bing3, Li Baoyu4, Niu Xiang3, Wang Xiaoyan5, Shi Hexiong3, Wang Jinsong3 |
| 1. Planning and Design Institute of Forest Products Industry, SFA, 100010, Beijing, China; 2. Institute of forest management of Liaoning Province, 118002,Dandong,Liaoning,China; 3. Research Institute of Forest Ecology, Environment and Protection, Chinese Academy of Forestry, 100091, Beijing, China; 4. Office of Conversion of Cropland to Forest, SFA, 100714, Beijing, China; 5. College of Soil and Water Conservation, Beijing Forestry University, 100083, Beijing, China |
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Abstract The ecological effects of the project of conversion of cropland to forest (“ the project冶 hereinafter) in Hebei Province were assessed with the distributed measurement method. The results showed that: 1) The total value of ecological effects of the project in Hebei Province is 97.08 billion yuan annually. The total value of ecological effects of the project in Hebei Province in 2013 was far more than the total investment since 1999. The order of the value of ecological effects of six ecological services from large to small was water conservation, carbon fixation and oxygen release, biodiversity protection, air purification, soil conservation and nutrient accumulation. The total quantity of water conservation of the project in Hebei Province in 2013 accounted for 26.54% of the annual mean total quantity of water resource, the total quantity of soil conservation accounted for 20.90% of the annual mean total quantityof sediment discharge, the total quantity of carbon sequestration accounted for 40.96% of the annual mean total quantity of carbon emission during the 12th five-year plan, the quantities of pollutants adsorption and the dust-retention were far more than the total quantity of “the improvement plan for a cleaner production level of the key industrial enterprises in Beijing-Tianjin-Hebei and surrounding area". 2) The order of value of ecological effects of different vegetation recovery types from large to small is planting trees on barren hills and uncultivated land, returning to forest and grassland from farmland, and closing hill sides for afforestation. 3) The order of value of ecological effects of different forest types from large to small is ecological forest, economic forest and shrubbery. Our evaluation results truly reflect the ecological effects of the project of conversion of cropland to forest in Hebei Province.
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Received: 24 April 2014
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