| 上海农田生态系统碳源汇时空格局及其影响因素分析 |
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| 引用本文： | 钱晓雍.上海农田生态系统碳源汇时空格局及其影响因素分析[J].农业环境科学学报,2011,30(7). |
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| 作者姓名： | 钱晓雍 |
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| 作者单位： | 上海市环境科学研究院,上海,200233 |
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| 基金项目： | 公益性行业(农业)科研专项(200903056) |
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| 摘 要： | 以1990—2009年上海市农作物产量、农田面积、农业投入等相关统计数据为依据,对上海农田生态系统主要碳源汇进行了测算,分析了上海农田生态系统碳源汇的时空变化特征,并探讨了农田生态系统碳源汇的影响因素。结果表明,1999—2009年上海农田生态系统碳吸收总量总体处于逐步下降趋势,且经济作物和果蔬作物碳吸收比例分别下降和上升明显;碳排放总量则呈逐步下降并趋于稳定的趋势,农用化学品投入是其主要排放源;单位面积碳吸收和排放量则一直处于波动状态。2009年上海各区县农田生态系统碳吸收量、碳排放量和单位耕地面积碳吸收量均为远郊大于近郊,而单位耕地面积碳排放量则为近郊大于远郊。碳源汇影响因素相关性分析表明,碳吸收与粮食作物和经济作物产量显著正相关,而与果蔬作物产量显著负相关;碳排放与农用化学品投入和燃料动力使用以及耕作灌溉管理均显著正相关。
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| 关 键 词： | 上海 农田生态系统 碳源 碳汇 碳吸收 碳排放 |
Spatial-temporal Variation and Impact Factor of Carbon Source and Sink of Farmland Ecosystem in Shanghai, China |
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| QIAN Xiao-yong.Spatial-temporal Variation and Impact Factor of Carbon Source and Sink of Farmland Ecosystem in Shanghai, China[J].Journal of Agro-Environment Science( J. Agro-Environ. Sci.),2011,30(7). |
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| Authors: | QIAN Xiao-yong |
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| Affiliation: | QIAN Xiao-yong (Shanghai Academy of Environmental Sciences,Shanghai 200233,China) |
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| Abstract: | Based on the statistical data of crop yields, cropland areas and agricultural inputs in the period from 1990 to 2009, the amounts of carbon absorption and emission of the farmland ecosystems in Shanghai were calculated, and the spatial-temporal variations and impact factors of carbon absorption and emission were analyzed. The results indicated that, the total amounts of carbon absorption appeared generally in the tendency of stepping down, and the carbon absorption proportion of economic crops and fruits-ve... |
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| Keywords: | Shanghai agricultural ecosystem carbon source carbon sink carbon absorption carbon emission |
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