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中国畜牧业氧化亚氮排放时空演变特征及影响因素

  • 2026-02-07 21:03:36
中国畜牧业氧化亚氮排放时空演变特征及影响因素

我国畜牧业N2O排放的影响因素图

来源:《农业资源与环境学报》2026年1期

作者:韩茹梅,王颖*,樊益绮,尚祉余

单位:中国地质大学(武汉)公共管理学院

摘   要

为评估我国畜牧业氧化亚氮(N2O)排放时空演变特征、脱钩状态及影响因素,本研究采用排放因子法核算2000—2022年全国31个省份畜牧业N2O排放量,从总量、结构和强度三个角度分析其演进趋势和分布特征,利用Tapio弹性脱钩模型探究其与畜牧业产值间的脱钩状态,并采用对数平均迪氏分解法(LMDI)厘定影响因素及其贡献度。结果表明:从总量来看,全国畜牧业N2O排放量呈上升-下降-反弹趋势,到2022年排放量达2.418×10t,排放高值区为西南、华北和华中地区;从结构来看,猪粪是畜牧业N2O第一大排放源;从强度来看,各省N2O排放强度均呈下降趋势,其中西北和西南地区降幅较大。研究期内我国畜牧业N2O 排放与其产值之间主要呈弱脱钩和强脱钩交替状态,稳定性较差。经济和人口规模因素促进了畜牧业N2O排放,其中经济因素贡献最大,约为6.173×105 t;效率和结构因素抑制了排放,效率因素是主要抑制因素,总减排贡献为4.567×10t。

结  论:

(1)2000—2022年我国畜牧业N2O排放量呈波动式下降趋势(从2.633×105 t下降至2.418×105 t),空间分布呈现出显著异质性,西南、华北及华中地区贡献率较高。主要排放源为猪(33%)、非奶牛(27%)和家禽(16%),河南、四川是猪排放高值区,山东是家禽排放高值区。排放强度总体呈下降趋势,西藏常年居首。西北、西南地区降幅显著,大部分省份减少值超0.007 0 t·万元-1

(2)研究期内,总脱钩弹性为-0.018 2,显示为强脱钩状态,但稳定性指数为3.71,表明脱钩状态波动显著。2000—2005年呈现弱脱钩状态;2005—2015年向强脱钩转换,脱钩效果增强;2015年后因政策扰动出现增长连接、衰退连接、强负脱钩等状态。

(3)效率因素和结构因素对畜牧业N2O排放起抑制作用,效率因素为主要抑制因素;经济因素和人口规模因素则对畜牧业N2O起促进作用,经济因素起主要促进作用。

引 用 本 文:

韩茹梅,王颖,樊益绮,等.中国畜牧业氧化亚氮排放时空演变特征及影响因素[J].农业资源与环境学报,2026,43(1):186-193.

HAN R M, WANG Y, FAN Y Q, et al. Spatial-temporal evolution and influencing factors of nitrous oxide emissions from animal husbandryin China[J].Journal of Agricultural Resources and Environment,2026,43(1):186-193.

编辑:牛颖

校对 | 审核:潘淑君  王农

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  1. CONNECT:[ UseTime:0.000363s ] mysql:host=127.0.0.1;port=3306;dbname=h_mffb;charset=utf8mb4
  2. SHOW FULL COLUMNS FROM `fenlei` [ RunTime:0.000649s ]
  3. SELECT * FROM `fenlei` WHERE `fid` = 0 [ RunTime:0.000302s ]
  4. SELECT * FROM `fenlei` WHERE `fid` = 63 [ RunTime:0.000327s ]
  5. SHOW FULL COLUMNS FROM `set` [ RunTime:0.000549s ]
  6. SELECT * FROM `set` [ RunTime:0.000213s ]
  7. SHOW FULL COLUMNS FROM `article` [ RunTime:0.000661s ]
  8. SELECT * FROM `article` WHERE `id` = 463934 LIMIT 1 [ RunTime:0.002651s ]
  9. UPDATE `article` SET `lasttime` = 1770856300 WHERE `id` = 463934 [ RunTime:0.002694s ]
  10. SELECT * FROM `fenlei` WHERE `id` = 65 LIMIT 1 [ RunTime:0.000245s ]
  11. SELECT * FROM `article` WHERE `id` < 463934 ORDER BY `id` DESC LIMIT 1 [ RunTime:0.010894s ]
  12. SELECT * FROM `article` WHERE `id` > 463934 ORDER BY `id` ASC LIMIT 1 [ RunTime:0.007440s ]
  13. SELECT * FROM `article` WHERE `id` < 463934 ORDER BY `id` DESC LIMIT 10 [ RunTime:0.036413s ]
  14. SELECT * FROM `article` WHERE `id` < 463934 ORDER BY `id` DESC LIMIT 10,10 [ RunTime:0.029533s ]
  15. SELECT * FROM `article` WHERE `id` < 463934 ORDER BY `id` DESC LIMIT 20,10 [ RunTime:0.026908s ]
0.188412s