中国生态农业学报2017，Vol.25Issue(12)：1870-1877,8.DOI:10.13930/j.cnki.cjea.170406
黄土高原旱塬区果-草-鸡生态循环模式及耦合效应分析
Ecological circle way and coupling effect of fruit-grass-chicken mode in dry highlands of the Loess Plateau
摘要
Abstract
Because of ecological fragility and lack of water resources, traditional planting mode of grain and industrial crops has severely affected and restricted the sustainable development of agriculture in dry highlands of the Loess Plateau. Thus based on resource characteristics and ecological conditions of dry highlands of the Loess Plateau, a mode for sustainable ag-ricultural development was established based on ternary planting of grain crops, industrial crops and grasses. The mode in-volved the application of the theory of system coupling and ecological cycle along with the combination of ecological conser-vation and efficient production. It provided the critical link for the realization of sustainable development of regional ecologi-cal and economic co-ordination in dry highlands of the Loess Plateau. Using Qingyang City in the Central Loess Plateau as the study area, an ecological cycle mode of fruit-grass-chicken was designed based on the characteristics of agricultural resources and economic development. Then the cyclic structure of the mode was configured using coupled functionality of industries in Qingyang City. Technical specifications were put forward and the effect of coupling analyzed for Qingyang City. The results showed that the mode output coupling production by the combination of the three subsystems of fruits, grass and chicken. The mode improved species structure of orchard ecosystems, increased utilization rate of agricultural resources, enhanced energy conversion and recycling of the orchard ecosystems. Compared with single orchard cultivation, per-unit-area profit increased by 3.82 times, water use efficiency increased by 54.1%, water/soil erosion decreased by 58.82%, application rate of chemical fertilizers/pesticides decreased by 25.24%/5.56% and utilization rate of land resources increased by 36.84%. Therefore, the established mode had significant ecological and socio-economic benefits, with a wide range of applications and promotional values in the Loess Plateau.关键词
黄土高原旱塬区/果-草-鸡耦合系统/功能耦合/耦合效益/生态循环模式Key words
Dry highland of the Loess Plateau/Fruit-grass-chicken system/Function coupling/Coupling effect/Ecological circle mode分类
农业科学引用本文复制引用
刘兴元,蒋成芳,李俊成,沈禹颖..黄土高原旱塬区果-草-鸡生态循环模式及耦合效应分析[J].中国生态农业学报,2017,25(12):1870-1877,8.基金项目
国家"十二五"科技支撑计划项目(2014BAD14B006)和国家重点研发计划项目(2017YF0504603)资助 This study was supported by the National Key Technologies R&D Program of China (2014BAD14B006) and the National Key Research Projects of China (2017YF0504603). （2014BAD14B006）
