Response of Herbaceous Vegetation Communities in Terraces of Ecological Isolation Zones in the Mountain Red Soil Area

Through a sample survey of the research area Yunnan Agricultural University (YAU) Research Base in Malong Jiuxian County, we summarized types herbaceous vegetation communities terraces ecological isolation zone area, analyzed species’ importance value, Patrick index, Simpson Shannon-wiener and Pielou then explored different patterns (annual two-years artificial sowing natural secondary community patterns) under three slope positions at top, middle bottom slope. The results indicated that: 1) there were 34 species vascular plants, 15 families, 32 genera study including one family, genus, Ferns, 14 31 genera, 33 Dicotyledons, mainly Asteraceae Bercht. & J. Presl, Poaceae Barnhart, Fabaceae Lindl. Among them, 26 11 families top slope, Presl; 23 13 middle, with most significant proportion 30 bottom, Lindl., Rosaceae Juss. 2) value Presl was largest area; Artemisia, Imperata cylindrica (L.) Beauv., Miscanthus Sinensis Anderss., Bidens Pilosa L., Erigeron acris Galium odoratum Scop. dominant species. 3) low diversity, good stability, high evenness index planted artificially year; better diversity lower stability decreased two-year planting than one-year planting; poor richness index; had but decreasing evenness. In configuration mountain red soil should be paid to select faster-growing that are not easily replaced by playing role isolation.