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中文摘要：
于2008--2010年利用涡度相关系统观测中国西北旱区某酿酒葡萄园碳通量，分析果园生态系统C0z净交换量（NEE）的变化规律。结果表明，葡萄园NEE晴天日变化呈“w”型曲线，阴天呈“U”型曲线。灌水和剪枝后不影响NEE日变化曲线形状，但灌水后峰谷值之差明显小于灌水前，剪枝会减小碳汇能力。葡萄园NEE生育初期为正值，生育中期为明显负值，生育末期碳汇能力开始下降。
英文摘要：
The change of orchard ecosystem net CO2 exchange capacity （NEE） was analyzed according to the measurement of carbon flux in a wine vineyard, northwest arid of China in 2008--2010 using the eddy covarianee system. The results showed that diurnal vineyards NEE in sunny day changed with ＂W＂ curve, while it changed with ＂U＂ curve in cloudy day. Irrigation and pruning had no effect on the shape of diurnal variation of NEE, but the difference between peak and valley after irrigation was significantly less than that before irrigation, and pruning would reduce the carbon sink capacity. Vineyard NEE was positive at early childbearing, at medium-term of growth it was significantly negative, and at final of growth carbon sink capacity began to decline.
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