摘要
为了定量分析长期净人为磷输入(Net anthropogenic phosphorus input,NAPI)及其对河流总磷(TP)通量的影响,本研究估算了潮河流域1995—2014年的NAPI及河流TP通量,并分析其驱动因子。结果表明:潮河流域1995—2014年的NAPI量为4.93~10.74 kg·hm^(-2)·a^(-1),年均增长率为4.01%,其在时间上呈现上升趋势,空间上南高北低,90%以上的NAPI来自化肥和食品/饲料;潮河TP通量变化主要与流量有关,其均值为1.70×10^(-2) kg·hm^(-2)·a^(-1);潮河流域磷输出率(TP/NAPI)降低主要是由于水文气候因素对磷迁移过程的影响所引起的土壤和沉积物的强烈截留作用。研究表明,在潮河流域的磷素管理措施中,需要更加关注磷输入和滞留磷的协同管理。
To quantify the long-term net anthropogenic phosphorus input(NAPI)and its impact on total phosphorus(TP)flux,this study estimated the NAPI and TP flux in the Chaohe River basin from 1995 to 2014 and attempted to identify their driving factors.The results showed that the NAPI in the Chaohe River basin from 1995—2014 was 4.93–10.74 kg·hm^(-2)·a^(-1),with an annual growth rate of 4.01%.The NAPI showed a spatial pattern of high in the south and low in the north.In addition,more than 90%of the NAPI was from fertilizer and food and feed consumption.Changes of the TP flux in the Chaohe River were mainly related to river flow.The average annual TP flux of the Chaohe River was 1.70×10^(-2) kg·hm^(-2)·a^(-1).The reduction of the phosphorus export ratio(TP/NAPI)was mainly due to an intensive retention effect of the soil and sediment induced by a hydroclimatic influence on the phosphorus transportation process.More attention in the phosphorus management strategy should be given to collaborative management of phosphorus input and retained phosphorus.
作者
杨木兰
黄洁钰
王焕晓
王晓燕
YANG Mulan;HUANG Jieyu;WANG Huanxiao;WANG Xiaoyan(College of Resource Environment and Tourism,Capital Normal University,Beijing 100048,China;Water Environment Research Center of Capital Region,Capital Normal University,Beijing 100048,China)
出处
《农业环境科学学报》
CAS
CSCD
北大核心
2024年第7期1599-1608,共10页
Journal of Agro-Environment Science
基金
国家自然科学基金项目(41271495)。
关键词
潮河流域
净人为磷输入(NAPI)
河流总磷通量
Chaohe River basin
net anthropogenic phosphorus input(NAPI)
river total phosphorus flux
