摘要
针对林下养鸡在全国各地普遍开展,而其对山区天然林地土壤质量造成的负面影响常被忽视的情况,在北京山区天然林下进行养鸡试验,应用土壤评价模型(soil surface assessment,SSA)从土壤稳定性、土壤入渗率和土壤养分循环3个方面评价林下养鸡对土壤的健康质量影响。研究证明,高密度养殖会造成林地植被和土壤退化,进而影响到林地整个生态系统。建议在山区天然林下养鸡,特别是在生态敏感区养鸡,要在环境影响评价的基础上,根据生态承载力,确定养殖密度,实行轮养、补饲,科学养殖,保持生态和经济的均衡发展。
Chicken grazing in woodland has been widely applied all over the country, but its negative impacts on soil quality in natural woodland in mountain areas are often neglected. In this paper, based on Soil Surface Assessment（SSA）, impacts of chicken grazing in natural woodland on soil quality in terms of soil stability, soil infiltration rate and soil nutrient cycling in a mountain area in Beijing were evaluated. The results show that high-density grazing would lead to degradation of vegetation and soil in woodland, thereby affecting change of the entire ecosystem in woodland. It is recommended that before chicken grazing in natural woodland in mountain areas, especially in ecologically sensitive areas, the grazing density should be determined based on environmental impact assessment according to ecological carrying capacity. Meanwhile, it is needed to implement rotational grazing and supplementary feeding, and scientific breeding to maintain the balance of ecological and economic development.
出处
《畜牧与饲料科学》
2016年第11期67-70,共4页
Animal Husbandry and Feed Science
基金
北京市科技计划项目--北京山区生态资源保护利用技术集成与示范(Z151100002115030)
关键词
土壤健康
土壤质量
林下养鸡
影响
soil health
soil quality
chickens grazing in woodland
impacts
