| Popis: |
Agricultural eco-efficiency is an important index to measure the sustainable development of agriculture. Scientific evaluation of agricultural eco-efficiency is necessary to accurately assess the true level of agricultural ecosystems, so as to achieve efficient utilization of agricultural resources. In this paper, the super-efficiency SBM-DEA model was adopted to measure and group the agricultural ecoefficiency of 31 provinces in Chinese inland from 2000 to 2017. The results showed that the provinces in the high-efficiency group were located in the eastern and western region, while the provinces in the middle and low efficiency groups were located in the northeast and central regions and parts of the western region. In 2017, only Qinghai, Ningxia, and Tianjin had insufficient agricultural output. The remaining areas that did not achieve DEA efficiency all had different degrees of redundancy of input and excessive carbon and pollution emissions. The spatial difference of China's agricultural eco-efficiency was obvious, and the trend of development changes was different. The main reasons for the efficiency loss were the redundancies of inputs and the excessive undesired output. Therefore, each province should take appropriate measures to improve the agricultural eco-efficiency according to its actual situation and the specific causes for efficiency loss. |
