四川洪雅丘陵草地植物群落经济性状与综合特征研究

论述了洪雅丘陵疏林草丛草地与农隙草丛草地两种草地类型中6个群落的植物性生产能力及相关的多项生态经济性状、种群优势度(SDR)、重要值(IV);比较了两种草地类型各群落间SDR、IV及植物产量、经济类群组成、各项指标的差异性、共同性。说明自然因素(特别是气候)及人为因素(放牧、刈割、烧草)对草地植被组成及产量的影响。

Study on the Economic Traits and General Features of Grassland Plant Communities in Hongya Hill Areas of Sichuan

This paper focuses on the vegetal productivity,related economic traits,SDR and IV of six plant communities which belong to two types of grassland in Hongya hill areas.These two grassland types are sparse woodland grassland and cropland grassland.By Comparing different plant communities of these two grassland types,it figured out their differences and sameness in SDR,IV,vegetal yield and some other items,and pointed out the influences of natural factors(especially climate)and human factors(grazing,mowing,burning grass)on the composition and yield of the grassland vegetation.