Estimate of CH_4 Emissions from Year-Round Flooded Rice Fields During Rice Growing Season in China

A special kind of rice field exists in China that is flooded year-round. These rice fields have substantially large CH4 emissions during the rice-growing season and emit CH4 continuously in the non-rice growing season. CH4 emission factors were used to estimate the CH4 emissions from year-round flooded rice fields during the rice-growing season in China. The CH4 emissions for the year-round flooded rice fields in China for the rice growing season over a total area of 2.66 Mha were estimated to be 2.44 Tg CH…

磨盘山水库施工期的水文服务

磨盘山水库位于拉林河干流上游五常市沙河子沈家营村1．5km附近，控制面积1151km^2。其上游洪水频繁，来水量大，涨落急剧。为此，建立施工其水文情报、预报服务系统，是防止洪水侵袭，保证工程安全施工，尽可能减少施工期设备与工程损失是非常必要的。文章介绍了自2003～2006年为其水文服务的具体内容与效果。