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首页> 外文期刊>Lakes & Reservoirs >Inflow and outflow of agricultural chemicals in Lake Biwa
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Inflow and outflow of agricultural chemicals in Lake Biwa

机译：琵琶湖农用化学品的流入和流出

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The annual pesticide inputs and outputs crossing the boundary of Lake Biwa were estimated. The inputs were calculated from continuous observations in four rivers flowing into Akani Bay, and from simultaneous observations in 65 influent rivers. The annual losses of pesticide from the watershed to Lake Biwa were 1.7% for esprocarb, 4.8% for mefenacet, 2.3% for thiobencarb, 3.7% for molinate, 9.4% for simetryn and 13.0% for isoprothiolane. The outputs from the lake were estimated from weekly observations in the Seta River. The loss of pesticides discharged downstream through the Seta River, compared with the amount applied, were estimated to be 0.9% for esprocarb, 3.2% for mefenacet, 0.5% for thiobencarb, 1.3% for molinate, 10.0% for simetryn and 5.7% for isoprothiolane. Pesticide outputs generally decreased to 30-80% of the input amounts, although simetryn was retained in the lake without substantial elimination.
机译：估计了超过琵琶湖边界的年度农药投入和产出。输入是根据对流入阿卡尼湾的四条河的连续观测以及对65条入水河的同步观测计算得出的。从该流域到琵琶湖的杀虫剂的年度损失为：esprocarb的1.7％，fenfenacet的4.8％，thiobencarb的2.3％，molinate的3.7％，simetryn的9.4％和isoprothiolane的13.0％。该湖的产出是根据每周在Seta河中的观测值估算的。与施药量相比，通过Seta河下游排放的农药损失估计为：esprocarb的0.9％，甲芬那酯的3.2％，thiobencarb的0.5％，molinate的1.3％，simetryn的10.0％和isoprothiolane的5.7％ 。农药产量通常减少到投入量的30-80％，尽管simetricn保留在湖泊中而没有实质性消除。

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