• 主题
高级搜索  >
历史搜索 清空历史
首页> 美国卫生研究院文献>Elsevier Sponsored Documents >Disaggregated N2O emission factors in China based on cropping parameters create a robust approach to the IPCC Tier 2 methodology
【2h】

Disaggregated N2O emission factors in China based on cropping parameters create a robust approach to the IPCC Tier 2 methodology

机译：根据种植参数对中国的N2O排放因子进行分类为IPCC方法2方法提供了一种可靠的方法

代理获取
本网站仅为用户提供外文OA文献查询和代理获取服务，本网站没有原文。下单后我们将采用程序或人工为您竭诚获取高质量的原文，但由于OA文献来源多样且变更频繁，仍可能出现获取不到、文献不完整或与标题不符等情况，如果获取不到我们将提供退款服务。请知悉。
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

China accounts for a third of global nitrogen fertilizer consumption. Under an International Panel on Climate Change (IPCC) Tier 2 assessment, emission factors (EFs) are developed for the major crop types using country-specific data. IPCC advises a separate calculation for the direct nitrous oxide (N2O) emissions of rice cultivation from that of cropland and the consideration of the water regime used for irrigation. In this paper we combine these requirements in two independent analyses, using different data quality acceptance thresholds, to determine the influential parameters on emissions with which to disaggregate and create N2O EFs. Across China, the N2O EF for lowland horticulture was slightly higher (between 0.74% and 1.26% of fertilizer applied) than that for upland crops (values ranging between 0.40% and 1.54%), and significantly higher than for rice (values ranging between 0.29% and 0.66% on temporarily drained soils, and between 0.15% and 0.37% on un-drained soils). Higher EFs for rice were associated with longer periods of drained soil and the use of compound fertilizer; lower emissions were associated with the use of urea or acid soils. Higher EFs for upland crops were associated with clay soil, compound fertilizer or maize crops; lower EFs were associated with sandy soil and the use of urea. Variation in emissions for lowland vegetable crops was closely associated with crop type. The two independent analyses in this study produced consistent disaggregated N2O EFs for rice and mixed crops, showing that the use of influential cropping parameters can produce robust EFs for China.
机译：中国占全球氮肥消费量的三分之一。根据国际气候变化专门委员会（IPCC）第2层评估，使用特定国家的数据为主要作物类型开发了排放因子（EFs）。 IPCC建议单独计算稻田与农田的直接一氧化二氮（N2O）排放量，并考虑灌溉用水方式。在本文中，我们使用不同的数据质量验收阈值，将这些要求合并到两个独立的分析中，以确定排放的影响参数，通过该参数可以分解和创建N2O EF。在整个中国，低地园艺的N2O EF略高于陆地作物（值在0.40％至1.54％之间）（在所施用肥料的0.74％至1.26％之间），并且显着高于水稻（值在0.29之间）在临时排水的土壤上的百分比介于0.65％和0.66％之间，在非排水土壤上的比例介于0.15％和0.37％之间）。水稻的EF较高与土壤排干时间较长和使用复合肥料有关。较低的排放与使用尿素或酸性土壤有关。旱地作物的EF较高与粘土，复合肥料或玉米作物有关。 EF较低与沙土和尿素的使用有关。低地蔬菜作物的排放变化与作物类型密切相关。这项研究中的两项独立分析得出了用于水稻和混合作物的一致的N2O EFs，表明使用有影响力的耕作参数可以为中国生产稳定的EFs。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
代理获取

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号