干旱区研究 ›› 2022, Vol. 39 ›› Issue (4): 1303-1311.doi: 10.13866/j.azr.2022.04.30
李远航1,2,3(),郝兴明2,3(
),张静静2,3,4,范雪1,2,3,赵卓怡2,3,4
收稿日期:
2021-12-10
修回日期:
2022-01-19
出版日期:
2022-07-15
发布日期:
2022-09-26
通讯作者:
郝兴明
作者简介:
李远航(1996-),男,硕士研究生,主要从事干旱区资源与环境等方面的研究. E-mail: 基金资助:
LI Yuanhang1,2,3(),HAO Xingming2,3(
),ZHANG Jingjing2,3,4,FAN Xue1,2,3,ZHAO Zhuoyi2,3,4
Received:
2021-12-10
Revised:
2022-01-19
Online:
2022-07-15
Published:
2022-09-26
Contact:
Xingming HAO
摘要:
基于阿克苏地区2001—2017年遥感、气象资料以及农业投入等相关统计数据估算了阿克苏绿洲农田的净碳汇量。结果表明:(1) 近17 a,阿克苏绿洲农田净生态系统生产力(Net Ecosystem Productivity,NEP)呈逐年上升的趋势,整体在空间分布上较为均匀,较高值主要集中在温宿县的南部、阿克苏市的中部及新和、库车、沙雅三县的交汇处。(2) 农业生产投入碳排放量从2001年的39.94×104 t增长至2017年的106.73×104 t,年均增长率为25.14%,空间分布呈东南高、西北低的分布格局。(3) 近17 a,阿克苏绿洲农田的净碳汇量呈波动上升趋势,空间上呈自西北向东南逐渐增加的特点。总体而言,阿克苏绿洲农田具有较强的净碳汇能力,但各县市绿洲农田净碳汇量区域差异明显,可通过优化田间管理、减少农业生产碳排放等措施,提高绿洲农田的净碳汇能力。
李远航,郝兴明,张静静,范雪,赵卓怡. 近17 a阿克苏绿洲农田净碳汇功能的时空变化[J]. 干旱区研究, 2022, 39(4): 1303-1311.
LI Yuanhang,HAO Xingming,ZHANG Jingjing,FAN Xue,ZHAO Zhuoyi. Spatial and temporal variation of net carbon sink function of farmland in Aksu oasis in the past 17 years[J]. Arid Zone Research, 2022, 39(4): 1303-1311.
表1
碳排放途径中各类碳排放系数"
碳排放途径 | 碳排放系数 | 来源 |
---|---|---|
氮肥(A1) | 1740.00 kg·kg-1 | [ |
磷肥(A2) | 165.09 kg·kg-1 | [ |
钾肥(A3) | 120.28 kg·kg-1 | [ |
复合肥(A4) | 380.97 kg·kg-1 | [ |
农药(B) | 4.9341 kg·kg-1 | 美国橡树岭国家实验室 |
农膜(C) | 5.18 kg·kg-1 | 南京农业大学农业资源与生态环境研究所 |
农田耕作(D) | 16.47 kg·hm-2 | [ |
农业用电(F) | 0.18 kg·kW-1 | 政府间气候变化专门委员会 |
农业灌溉(G) | 266.48 kg·hm-2 | [ |
柴油(J) | 0.5927 g·kg-1 | 政府间气候变化专门委员会 |
农田翻耕(H) | 312.6 kg·hm-2 | [ |
表2
2001—2017年绿洲农田农业生产投入中产生的碳排放"
年份 | 化肥 | 农膜 | 农药 | 农机 | 灌溉 | 柴油 | 翻耕 | 总和 |
---|---|---|---|---|---|---|---|---|
2001 | 9.70 | 0.23 | 6.95 | 11.46 | 9.03 | 1.99 | 0.58 | 39.94 |
2002 | 9.54 | 0.21 | 6.29 | 12.11 | 8.78 | 2.20 | 0.56 | 39.69 |
2003 | 11.01 | 0.22 | 6.52 | 12.21 | 8.80 | 2.56 | 0.55 | 41.88 |
2004 | 11.64 | 0.25 | 7.35 | 12.25 | 8.62 | 2.90 | 0.55 | 43.55 |
2005 | 12.33 | 0.26 | 7.79 | 13.03 | 8.73 | 2.93 | 0.58 | 45.64 |
2006 | 14.00 | 0.33 | 8.76 | 12.77 | 8.97 | 3.16 | 0.60 | 48.58 |
2007 | 14.66 | 0.34 | 9.29 | 12.13 | 9.25 | 2.82 | 0.62 | 49.12 |
2008 | 16.97 | 0.30 | 12.24 | 15.62 | 11.78 | 3.07 | 1.31 | 61.30 |
2009 | 18.60 | 0.48 | 12.88 | 18.10 | 12.09 | 3.66 | 0.90 | 66.71 |
2010 | 20.00 | 0.53 | 14.13 | 17.89 | 13.04 | 4.01 | 0.94 | 70.55 |
2011 | 22.46 | 0.49 | 15.02 | 18.24 | 13.60 | 4.49 | 0.84 | 75.14 |
2012 | 21.95 | 0.50 | 15.32 | 18.72 | 13.49 | 4.82 | 0.94 | 75.73 |
2013 | 22.35 | 0.52 | 15.60 | 18.89 | 13.73 | 5.17 | 0.94 | 77.20 |
2014 | 26.24 | 0.63 | 19.89 | 25.62 | 15.88 | 6.05 | 1.01 | 95.32 |
2015 | 26.48 | 0.63 | 20.50 | 26.45 | 15.77 | 6.41 | 0.98 | 97.23 |
2016 | 29.41 | 1.18 | 21.26 | 27.70 | 17.49 | 6.57 | 0.95 | 104.56 |
2017 | 31.97 | 0.16 | 21.47 | 27.70 | 18.21 | 6.20 | 1.01 | 106.73 |
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