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草基－鱼塘生态系统中能量转化与经济效益分析王德建，徐琪，刘元昌（中国科学院南京土壤研究所，２１０００８）Ｇｒａｓｓｄｙｋｅ－ＦｉｓｈｐＯｎｄＥｃｏｓｙｓｔｅｍ──ＩｔｓＥｎｅｒｇｙＣｏｎｖｅｒｓｉｏｎａｎｄＥｃｏｎｏｌｎｉｃＢｅｎｅｆｉｔ￥．ＷａｎｇＤｅｊｉａｎ；ＸｕＱｉ；ＬｉｕＹｕａｎｃｈａｎｇ（ＩｎｓｔｉｔｕｔｅｏｆＳｏｉｌＳｃｉｅｎｃｅ，ＡｃａｄｅｍｉａＳｉｎｉｃａ，Ｎａｎｊｉｎｓ２１０００８）．ＣｈｉｎｅｓｅＪｏｕｍａｌｏｆＥ－ｃｏｌｅｇｙｌ１９９３，１２（２）：２９－３０．Ｕｓｉｎｇｓｉｍｕｌａｔｉｏｎｔｅｓｔｍｅｔｈｏｄ，ｔｈｅｅｎｅｒｇｙｃｏｎｖｅｒｓｉｏｎｉｎａｇｒａｓｓｄｙｈｅ－ｆｉｓｈｐｏｎｄｅｃｏｓｙｓｔｅｍｉｓｓｔｕｄｉｅｄ，ａｎｄｗｉｔｈａｐｒｏｄｕｃｔｉｖｅｓｙｓｔｅｍａｓｃｏｎｔｒｏｌ，ｔｈｅｅｃｏｎｏｍｉｃｂｅｎｅｆｉｔｏｆｔｈｅｅｃｏｓｙｓｔｅｍｉｓａｎａｌｙｚｅｄ．Ｔｈｅｒｅｓｕｌｔｓｓｈｏｗ：１．ｔｈｅｕｔｉｌｉｚａｔｉｏｎｒａｔｅｏｆｓｏｌａｒｅｎｅｒｇｙｂｙｇｒａｓｓｉｓ０．６％，ａｎｄｔｈｅｃｏｎｖｅｒｓｉｏｎｅｆｆｉｃｉｅｎｃｙｆｒｏｍｇｒａｓｓｔｏｆｉｓｈｉｓ
Energy Conversion and Economic Benefit Analysis of Grassland-Fishpond Ecosystem WANG Dejian, XU Qi, LIU Yuanchang (Institute of Soil Science, Chinese Academy of Sciences, 210008) Grassdyke-FishpOecosystem──ItsEnergyConversionandEconolnicBenefit ¥. WangDejian; XuQi; LiuYuanchang (Institute of Soil Science, AcademiaSinica, Nanjins210008). Chinese Journal of E-colegyl 1993, 12 (2): 29-30. Usingsimulationtestmethod, theenergyconversioninagrassdyhe-fishpondecosystemisstudied, andwithaproductivesystemascontrol, theeconomicbenefitoftheecosystemisanalyzed. Theresultsshow: 1. theutilizationrateofsolarenergybygrassis0.6%, andtheconversionefficiencyfromgraststofishis