摘要
采用相关计算方法,估算吉林省2011—2018年畜禽粪便、有机污染物(COD)、氮、磷总量,计算各市(州)畜禽粪便耕地负荷量及警戒值,分析其时空变化特征。结果显示:(1)2018年吉林省畜禽粪便、COD、氮、磷总量较2011年均呈现减少趋势,粪便来源主要是牛、猪、家禽。2011—2018年吉林省畜禽粪便平均猪粪当量约为7790.98万t,平均耕地负荷量12.28 t/hm^(2),农田对畜禽粪便仍具有强大的消纳潜力。(2)2018年吉林省畜禽粪便COD、氮、磷耕地负荷的平均值分别为0.71 t/hm^(2),40.15 kg/hm^(2),5.83 kg/hm^(2)。畜禽粪便产沼气潜力为24.43亿m^(3),能源化利用潜力巨大。(3)2011—2018年吉林省畜禽粪便耕地负荷量警戒值呈倒“U”字型的变化特征,2011-2013年处于平稳阶段,分级级别为Ⅰ级;2014-2016年处于急剧上升阶段,分级级别Ⅱ级;2017年开始回落,到2018年降为0.34,分级级别为Ⅰ级,表明目前吉林省畜禽粪便对耕地的负荷未对环境构成威胁。(4)空间分布上中部地区为畜禽粪便产生的主要地区,其畜禽粪便、COD、氮、磷耕地负荷、警戒值均高于东部地区与西部地区。(5)畜禽粪便耕地负荷量警戒值在空间变化特征表现为各市(州)均呈下降趋势。其中,白山市、四平市对环境污染的威胁等级降低最为明显。
Using relevant calculation method,the total amount of livestock manure,COD,nitrogen and phosphorus in Jilin province from^(2)011 to 2018 was estimated,the farmland load and warning value of livestock manure in different regions were calculated,and their spatial and temporal change characteristics were analyzed.The results showed that:(1)In 2018,the total amount of livestock manure,COD,nitrogen and phosphorus showed a decreasing trend compared with that in 2011,and the main sources of feces were cattle,pigs and poultry.From^(2)011 to 2018,the average pig manure equivalent of livestock manure in Jilin province was about 77.9 million tons,and the average farmland load was 12.28 t/hm^(2).Farmland still has a strong absorption potential for livestock manure.(2)In 2018,the average values of COD,nitrogen and phosphorus load of farmland in Jilin province were 0.71 t/hm^(2),40.15 kg/hm^(2) and 5.83 kg/hm^(2),respectively.The potential of biogas production from livestock manure was 2.443 billion m^(3),which has great potential for energy utilization.(3)From^(2)011 to 2018,the warning value of livestock manure farmland load in Jilin province showed an inverted“U”shape,and from^(2)011 to 2013,it was in a stable stage,and the classification level was grade I;From^(2)014 to 2016,it was in the stage of sharp rise,and the grade was II;It began to fall back in 2017,and dropped to 0.34 by 2018,with the classification level of grade I,indicating that the current load of livestock manure on cultivated land in Jilin province does not pose a threat to the environment.(4)In terms of spatial distribution,the central region is the main area of livestock manure production,and its livestock manure,COD,nitrogen,phosphorus and warning value were higher than those in the eastern and the western regions.(5)The changes of warning value of livestock manure farmland load showed a downward trend in all cities(prefectures).Among them,Baishan City and Siping City had the most obvious reduction in the threat level of environmental pollution.
作者
车晓翠
郭聃
张春燕
李洪丽
赵玲
CHE Xiaocui;GUO Dan;ZHANG Chunyan;LI Hongli;ZHAO Ling(College of Resources and Environment,Jilin Agricultural University,Changchun 130118,China;College of Economics and Management,Jilin Agricultural University,Changchun 130118,China)
出处
《吉林农业大学学报》
CAS
CSCD
北大核心
2023年第2期204-212,共9页
Journal of Jilin Agricultural University
基金
国家重点研发计划项目(2016YFE0202900,2016YFC0501201)
国家自然科学基金项目(41801328)。
关键词
畜禽粪便
粪便污染
耕地负荷量
警戒值
吉林省
livestock manure
fecal pollution
farmland load
warning value
Jilin province
作者简介
车晓翠,女,博士,副教授,研究方向:农业资源可持续利用;通信作者:赵玲,E-mail:zhaol@jlau.edu.cn。
