CAJ | 학술논문

在人类煤炭开采活动的干预下，农田生态系统中碳储量迅速变化。这种变化不仅改变了土壤肥力及农田作物产量，而且对区域及全球环境具有很大影响，事实上稳定保持其碳库是农业减缓温室气体的主要途径。该文的研究目的就是从煤炭开采对区域农田植被碳库储量影响的角度来研究煤炭开采对农田生态系统碳储量的影响，以徐州九里矿区为研究区，通过区域内农田植被碳库采样与试验、区域植被碳库储量估算模型的构建以及碳储量估算得到九里矿区煤炭开采沉陷区农田植被的碳储量和碳密度分布图，然后与情景模拟得出的该区未受到煤炭开采影响情况下，经过几十年变化后农田植被的碳储量和碳密度分布图进行对比，得出煤炭开采对沉陷区范围的农田植被碳库的扰动影响，发现与不受到煤炭开采的影响相比，在沉陷区域外围地势较高的坡地煤炭开采对农田植被碳密度的影响很小，在沉陷区地势较低的季节性积水区和常年积水湿地区煤炭开采对农田植被碳密度的影响较大。在整个煤炭开采沉陷区范围内，与不受到煤炭开采的影响相比，煤炭开采沉陷区域农田植被碳库碳储量减少2.4万t。煤炭开采对区域农田植被碳库储量的影响属于失碳效应。
재인류매탄개채활동적간예하，농전생태계통중탄저량신속변화。저충변화불부개변료토양비력급농전작물산량，이차대구역급전구배경구유흔대영향，사실상은정보지기탄고시농업감완온실기체적주요도경。해문적연구목적취시종매탄개채대구역농전식피탄고저량영향적각도래연구매탄개채대농전생태계통탄저량적영향，이서주구리광구위연구구，통과구역내농전식피탄고채양여시험、구역식피탄고저량고산모형적구건이급탄저량고산득도구리광구매탄개채침함구농전식피적탄저량화탄밀도분포도，연후여정경모의득출적해구미수도매탄개채영향정황하，경과궤십년변화후농전식피적탄저량화탄밀도분포도진행대비，득출매탄개채대침함구범위적농전식피탄고적우동영향，발현여불수도매탄개채적영향상비，재침함구역외위지세교고적파지매탄개채대농전식피탄밀도적영향흔소，재침함구지세교저적계절성적수구화상년적수습지구매탄개채대농전식피탄밀도적영향교대。재정개매탄개채침함구범위내，여불수도매탄개채적영향상비，매탄개채침함구역농전식피탄고탄저량감소2.4만t。매탄개채대구역농전식피탄고저량적영향속우실탄효응。
Carbon stocks of the farmland ecosystem are rapidly changing by human mining activity, which not only changes the soil fertility and the crop yield, but also has great influence on the global environment. In fact, it is a primary way to maintain the stability of the carbon pool. This paper takes the Jiuli Mining Area, in the city of Xuzhou, as the research area to study the effect of human mining activity on the regional carbon pool of the farmland ecosystem. Firstly, we studied the evaluation thinking:we studied the difference in storage of the carbon pool of the farmland ecosystem which is in the same agriculture zones (the general affecting factors of the carbon pool are almost the same) under two conditions:the carbon pool of the farmland ecosystem is affected by mining, and it is not affected after several decades of change. Secondly, this research studied the effect of human mining activity through sampling and experiments in the farmland area, model construction and carbon storage estimates of the carbon pool of the farmland ecosystem, the carbon density profile, and carbon storage of the farmland ecosystem in the Jiuli Mining Area. The carbon density profile and carbon storage can then be obtained in a scenario simulation where the regional farmland ecosystem is not disturbed by human mining activity until today. Finally, the effect on the regional carbon pool of the farmland ecosystem by the human mining activity can be obtained by careful contrasting the carbon density profile and carbon storage of the two scenarios mentioned above. We find that the Kriging Interpolation method is the most suitable for spatial interpolation of the vegetation carbon density in the mining subsidence area, and the accuracy evaluation of the spatial interpolation R2 is 0.818. Lastly, the conclusion of this paper is that there are 1.3×104 tons of carbon lost in the subsidence area, 0.2 ×104 tons of carbon lost in the seasonal water-logged area, 0.4×104 tons of carbon lost in the perennial water-logged area, and 0.5×104 tons of carbon lost in the subsidence water-logged area. If not affected by mining, the vegetation carbon pool storage of the farmland ecosystem in the subsidence region of the Jiuli Mining Area is 5.8×104 tons, and this figure becomes 3.4×104 tons after mining. So, there is 2.4×104 tons of carbon loss because of human mining activity. Furthermore, on the rising parts of the mining subsidence area, human mining activity has a significant effect on the carbon pool of the farmland ecosystem, and has little effect in the seasonal hydrops areas. In the whole Jiuli Mining Subsidence Area, the carbon effect on the farmland vegetation carbon pool by mining is a carbon loss (carbon source) effect. This research can provide insight into evaluating the effect on the regional carbon pool of the farmland ecosystem by human mining activity.