资源科学 ›› 2016, Vol. 38 ›› Issue (1): 93-101.doi: 10.18402/resci.2016.01.10

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农用地整治项目的碳效应分析与核算研究

张庶(), 金晓斌(), 杨绪红, 单薇, 周寅康   

  1. 南京大学地理与海洋科学学院,南京 210093
  • 收稿日期:2015-03-16 修回日期:2015-06-16 出版日期:2016-01-25 发布日期:2016-01-25
  • 作者简介:

    作者简介:张庶,男(土家族),湖北恩施人,硕士生,主要研究方向为土地资源管理。E-mail:zhang555shu@163.com

  • 基金资助:
    基金项目:国家高技术研究发展计划(863计划):“典型城市碳核查标准规范研究”(2013AA122003-7)

Determining and estimating impacts of farmland consolidation projects on the regional carbon effects

ZHANG Shu(), JIN Xiaobin(), YANG Xuhong, SHAN Wei, ZHOU Yinkang   

  1. School of Geography and Ocean Sciences,Nanjing University,Nanjing 210093,China
  • Received:2015-03-16 Revised:2015-06-16 Online:2016-01-25 Published:2016-01-25

摘要:

农用地整治项目作为一项采取工程技术措施对土地利用的结构、方式等进行改造的实践活动,在显著改变土地利用活动的同时,也对区域碳平衡产生重要影响。本文从工程实施碳效应、土地结构碳效应、土地利用方式碳效应三方面对农用地整治的碳效应进行了分析,并以江苏宜兴市农用地整治项目为例进行了测算。主要结论如下:①项目整治后,土地结构变化碳储量增加3 718t,工程建设净碳排放量约为6 830t,土地利用方式变化年碳汇量增加5 459t;②项目区耕地碳储量增加11 071t,耕地面积增加是主要原因;③灌溉排水工程是影响碳排放量的最重要的工程类型,水泥、钢材和柴油等工程建设物资投入是促使碳排放量增加的主要来源;④区域年净碳汇量增长显著,增幅为23.64%,主要源于耕地种植面积的增加和农业灌溉条件的改善。

关键词: 土地整治, 农用地整治, 碳效应, 碳核算

Abstract:

As a practice relying on engineering measures,farmland consolidation has an important influence on land use such as altering its structures and patterns. Farmland consolidation projects also exert significant effects on regional carbon balances. Here,we analyzed the carbon effect from three aspects:the carbon effect of engineering construction,land structure and land use patterns. We calculated comprehensive carbon effects in the case of farmland consolidation projects in Yixing City,Jiangsu,China. We found that farmland consolidation increased regional carbon sinks,carbon storage increased by 3 718t,but it also remarkably increased carbon emissions. Carbon emissions increased by 6 830t because of engineering construction,and the annual carbon sink increased by 5 459t. Farmland carbon stocks increased by 11 071t,among which the increase in farmland was a main factor. The increment of soil carbon storage accounted for 87.21% of the total carbon storage increment. Irrigation and drainage engineering were the main reasons affecting carbon emissions,accounting for 70.96% of total carbon emissions during engineering construction. The consumption of construction materials such as cement,steel and diesel were major sources of carbon emissions. The construction of shelterbelts had significant effects on the result. The annual carbon sink increased by 23.64% because of the increased acreage of arable land and improvements in agricultural irrigation.

Key words: land consolidation, farmland consolidation, carbon effects, carbon accounting