Knowledge Network Node
Environmental Science. 2021, (07) Core

Role of Land Use Changes on Ammonia Emissions from Agricultural Ecosystems in the Yangtze River Delta Region from 2000 to 2018Chinese Full TextEnglish Full Text (MT)

WANG Wen-jin;WANG Qing;ZHU An-sheng;HUANG Ling;GU Ying;WANG Yang-jun;WANG Min;LI Li;School of Environmental and Chemical Engineering,Shanghai University;Shanghai Academy of Environmental Sciences;School of Air Transportation,Shanghai University of Engineering Science;

Abstract: Based on Landsat satellite remote sensing images,this study interprets land use changes in the Yangtze River Delta （YRD）region from 2000 to 2018.Combined with changes in nitrogen fertilizer application,the changes in ammonia emissions from farmland ecosystem due changes in land use and nitrogen fertilizer application were further investigated.The results show that along with the rapid urbanization process,the area of cultivated land in the YRD region has gradually decreased from 276 269 km~2（49%of total land area） in 2000 to 244 001 km~2（44%） in 2018.The effects of changes in land use and nitrogen fertilizer application on ammonia emissions from farmland ecosystems mainly include emissions from soil background and nitrogen fertilizer application.From 2000 to 2018,ammonia emissions due to the application of nitrogen fertilizer decreased from 690 kt·a-1to 541 kt·a-1（relative decrease by22%）,while the ammonia emissions from the soil background reduced from 32 kt·a-1to 29 kt·a-1（decrease by 9%）.During the past 20 years,urbanization in the YRD region has accelerated,and the area of cultivated land and the total amount of nitrogen fertilizer application have significantly reduced,thus resulting in reductions in ammonia emissions from the farmland ecosystem.
Keywords：

ammonia emissions; agricultural sources; land use change; nitrogen fertilizer application; Yangtze River Delta（YRD）;

  • DOI：

    10.13227/j.hjkx.202010202

  • Series：

    (B) Chemistry/ Metallurgy/ Environment/ Mine Industry; (D) Agriculture; (J) Economics ＆ Management

  • Subject：

    Environment Science and Resources Utilization; Fundamental Science of Agriculture; Agriculture Economy; Theory of Industrial Economy

  • Classification Code：

    S181;F301.2;F323.211;F426.72

Download the mobile appuse the app to scan this coderead the article.

Tips: Please download CAJViewer to view CAJ format full text.

Download: 601 Page: 3442-3450 Pagecount: 9 Size: 2184K

Related Literature
  • Similar Article
  • Reader Recommendation
  • Associated Author