亚高山草甸类草地生态质量评价指标

为了全面客观评价亚高山草甸类草地生态质量,在实地测定大量样方和统计分析的基础上,选取了盖度、物种多样性指数、丰富度指数、物种数、草地质量指数、优良牧草比例等指标作为评价指标,制定了亚高山草甸类草地生态质量的评价四级指标值。选择各级别典型生态区域实例,通过对现状和指标值对比分析表明,该方法反映了植被生态的量化指标,具有易获得性和实用性,符合当地生态质量现状,可以科学、客观地评价区域生态质量,研究成果对于该区域生态保护具有实际的指导意义。

The index system of the ecological quality evaluation for subalpine meadow

Based on the investigated results from the plots and the statistical and analyzed results,some indices such as the vegetation coverage,species diversity,richness,number of species,index of grassland quality,biomass percent of palatable herbage over the subalpine meadow were selected as the evaluation indices to comprehensively and objectively appraise the quality of ecology over the subalpine meadow.Using the typical case of ecological area over the grassland of subalpine meadow,the relationship between the evaluation indices and existing circumstances were analyzed.The results showed the method reflects the quantificational indices of the ecology of vegetation.These indices are closely related each other and easy to be derived and applied,and accord with the local conditions of the ecological quality,can be used to scientifically and objectively appraise the regional ecological quality,guide the ecological regeneration,and guarantee the quality of the ecological regeneration projects over the grassland of subalpine meadow.