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从1999年到2006年在中科院长白山森林生态系统定位站(42°24’N,128°28’E,海拔738m)对长期高浓度CO2,蒸对土壤酶活性的影响进行了研究。采用开顶箱(OTC)的方式对红松和长白松进行高浓度CO2处理,CO2浓度分别受控于高浓度CO2箱(500μmol·mol-1)、对照箱(370μmol·mol-1)和裸地(370μmol·mol-1)。经高浓度CO2(500μmol·mol-1),蒸8年后,土壤样品分别在2006年春季、夏季和秋季进行采集和分析。结果表明:在高CO2浓度(500μmol mol-1)条件下,转化酶活性除了红松夏季样品之外都是显著降低的;而脱氢酶活性却是增加的,但只有部分结果显著;长白松的多酚氧化酶活性都显著降低;过氧化氢酶活性在春季增加,而在其他季节均降低。总而言之,在高CO2浓度条件下,土壤酶的活性与树种有关。图2参20。
From 1999 to 2006, the effects of long-term high-concentration CO2 and steam on the soil enzyme activities were studied at the Changbai Mountain Forest Ecosystem Positioning Station (42 ° 24’N, 128 ° 28’E, 738m above sea level) of the Chinese Academy of Sciences. High-density CO2 treatment of Korean pine and Pinus massoniana with OTC was carried out. The CO2 concentrations were controlled by high concentration CO2 tank (500μmol · mol-1), control tank (370μmol · mol-1) and bare Ground (370μmol · mol-1). After high-concentration CO2 (500μmol · mol-1) for 8 years, the soil samples were collected and analyzed in the spring, summer and autumn of 2006 respectively. The results showed that the activity of invertase was significantly decreased except for the summer sample of Korean pine under high CO2 concentration (500 μmol mol-1), while the activity of dehydrogenase was increased, but only some of the results were significant. Of polyphenol oxidase activities were significantly reduced; catalase activity increased in the spring, but decreased in other seasons. In summary, soil enzyme activity is related to tree species at high CO2 concentrations. Figure 2 reference 20.