基于农田整理工程的碳减排估算与分析

发布时间：2018-03-10 23:15

本文选题：土地整理工程　切入点：碳排放　出处：《江西农业大学学报》2017年01期 　论文类型：期刊论文

【摘要】：实施土地整理工程,不仅能够提供产能,而且能够减少农田碳排放。以河北省巨鹿县王虎寨镇土地整理项目为例,通过GIS空间分析方法,最优可达性分析等研究方法,研究了土地整理项目前后廊道结构变化及生产方式的改变导致的碳源碳汇、碳排放特征及其规律的相对差异,并对农田防护林固碳量和田间运输的缩减碳排放量进行了计算。结果表明:农田防护林10 a累计固碳量可达2.63×10~6kg,年固碳量在9×10~4~4.5×10~5kg/a之间,固碳高峰期在防护林种植后3~6 a,而后逐渐降低趋于稳定;田间道路的新建与整修后,在单田块机械作业方式下,田间运输年节约柴油2.16×10~4kg/a,碳减排量达1.28×10~4kg/a;规模化作业方式比单户自营最大可减少86.7%碳排放量。总体来看,巨鹿县土地整理工程在农田防护林及田间运输角度对农田碳排放降低有一定效果。
[Abstract]:The implementation of land consolidation projects can not only provide production capacity, but also reduce carbon emissions from farmland. Taking the land consolidation project in Wanghuzhai Town, Julu County, Hebei Province as an example, through the GIS spatial analysis method, the optimal accessibility analysis and other research methods are used. In this paper, the relative differences of carbon sink, carbon emission characteristics and their laws caused by structural change of corridor and change of production mode before and after land consolidation project were studied. The carbon sequestration of farmland shelterbelt and the reduction of carbon emission from field transportation were calculated. The results showed that the accumulative carbon sequestration of farmland shelterbelt in 10 years could reach 2.63 脳 10 ~ (-6) kg, and the annual carbon sequestration was between 9 脳 10 ~ (10) ~ 44.5 脳 10 ~ (5) kg / a. The peak period of carbon sequestration was 3 ~ 6 years after planting in the shelterbelt, and then gradually decreased to a stable level. After the construction and renovation of the field roads, under the single-field mechanical operation mode, Field transportation saves 2.16 脳 10 ~ (10) ~ 4 kg / a of diesel oil and reduces carbon emissions by 1.28 脳 10 ~ (10) ~ 4 kg / a per year. Land consolidation project in Julu County has certain effect on carbon emission reduction in farmland shelterbelt and field transportation.
【作者单位】：中国地质大学(北京)土地科学技术学院;国土资源部土地整治中心重点实验室;
【基金】：国家自然科学基金“黑龙港流域土地整理项目碳排放及其影响机理研究”(41401201)~~
【分类号】：S181

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