Grassland management experiment (GrassMan) was set up in 2008 on a permanent semi-natural grassland in the Solling uplands, Germany. The main research focus is on the ecosystem functioning of the phytodiverse grassland (e.g. productivity and forage quality, water and nutrient fluxes). The aim of our study was to analyse the effects of vegetation composition and functional diversity on productivity and forage quality of the semi-natural permanent grassland. Variation in sward composition was achieved by herbicide application and resulted in three sward types: control sward type (without herbicide application), monocot-reduced and dicot-reduced. Further management factors included different nutrient input levels (without fertilizer and 180-30-100 kg/ha of N-P-K per year) and use intensity (cut once or three times a year). Functional diversity was determined by estimation of the yield shares for each species in the species composition and their specific functional characteristics. Forage quality was analysed by near infrared spectroscopy (NIRS). While sward type influenced the forage quality, yield variation was explained mainly by the management regime.
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机译:草地管理实验(GrassMan)于2008年在德国Solling高地的永久性半天然草地上建立。主要研究重点是植物多样性草原的生态系统功能(例如生产力和牧草质量,水和养分通量)。我们的研究目的是分析植被组成和功能多样性对半天然永久性草地生产力和牧草质量的影响。通过使用除草剂可实现草地组成的变化,并产生三种草地类型:对照草地类型(不施用除草剂),单子叶植物减少和双子叶植物减少。进一步的管理因素包括不同的养分投入水平(不施肥和每年180-30-100 kg / ha N-P-K)和使用强度(每年减少一到三次)。通过估计物种组成中每个物种的产量份额及其特定功能特征来确定功能多样性。饲料质量通过近红外光谱(NIRS)分析。尽管草皮类型影响草料质量,但产量差异主要由管理制度解释。
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