安徽农业科学Issue(12)：7177-7181,7185,6.
广东省畜禽粪便时空变化特征及耕地负荷分析
Analysis on Spatial-temporal Variation Characteristics and Farmland Load of Poultry and Livestock Excrement in Guangdong Province
摘要
Abstract
Based on statistical data and related parameters, the spatial-temporal variation in total amount and nutrient content of poultry and livestock excrement (PLE) and farmland load and pollution risk evaluation of N and P2O5 in PLE were analyzed in Guangdong Province. The results showed that the lotal amount of PLE was about 9.3 × 1010 kg per year in Guangdong Province. Pig excrement, cow dung and chicken litter are the major contributing farlors, 95% more of the total amounl of PLE. Significant spalial variation of PLE production was found in Guangdnng Province, characterized by: cities around the Pearl River Estuary have the lowest production amount of PLE; with the cities away from the Pearl River Estuary, the production amount of PLE becoming more and more. The Maoming City and Zhanjiang City have the most annual production of PLE, more than 10 × 10 kg per year, while the lowest production amounts were found in Zhuhai, Zhongshan and Shenzhen City, less than 4.5% of the Manming City. The average farmland load of N, P2O5 in PLE was becoming increase, but various in different cities in Guangdong Province. The Shenzhen, Dongguan and Foshan City have the largest farmland load amount with more than 300 kg/hm2; the farmland load amounts, however, were relatively lower in Zhongshan, Qingyuan, Shaoguan and Zhanjiang City. Results of pollution risk assessment of PLE showed that the farmland was contaminated to different extent by PLE in Guangdong Province. The highest risk alert level was found in Pearl River Delta areas, particularly in the Xijiang River basin area. Therefore, works of enhancing the risk management, development and utilization and Comprehensive treatment of PLE should be carried out in Guangdong Province, especially in cities of higher risk a-lert levels.关键词
畜禽粪便/时空变化/耕地负荷/污染风险评价/广东省Key words
Livestock and poultry excrement/ Spatial and temporal variation/ Farmland load/ Pollution risk assessment/ Guangdong Province分类
农业科技引用本文复制引用
陈康林,李江涛,钟晓兰,王芳,倪杰,李小嘉..广东省畜禽粪便时空变化特征及耕地负荷分析[J].安徽农业科学,2012,(12):7177-7181,7185,6.基金项目
国家自然科学基金项目(41101302,41101278,40801034) （41101302,41101278,40801034）
广州市属高枝科研项目(10A033). （10A033）
