Studies On The Multiple Plantting Patterns With Tree And Grass For Vegetation Recovery Of Purple Soil Slopeland In Hunan

The research is based on Hengshao Basin in Hunan Province and Yuanshui River in Xiangxi Autonomous County with severe erosion and seasonal arid, and takes the forest- grass compound planting patterns(FGCP) of the vegetation recover in purple soil on the barren hillside as the object.Based on the objective evaluation of the comprehensive effect of the FGCP,the paper focuses on the mechanism of soil and water conversation of the FGCP and the design of it .At the same time, the paper probes into the techonoloy integration of the FGCP,which will provide the theoretical foundation and guidance in the system of vegetation recover of the purple soil on the barren hillside and enrich the theory itself and the technology.The main conclusions are as follows.1. From the evaluation of the comprehensive effect of the FGCP, a new scientific and practical evaluation index system of the FGCP of the vegetation recover is integrated,by which elects FGCP which is suitable for vegetation recover of the purple soil on the barren hillside.2. In the mechanism research of soil and water conversation of the TGCP,the effect and mechanism are defined. Meanwhile,the notion of the zoological catchments is produced. From the connotation and dennotation of zoological catchments,the new techonology of prevention and cure of the drought in the seasonal arid district in the south of China is proven.3. In the design research of the FGCP, the principles are defined and the methods of space design (including plane design and solid design) and time design are definite,by which several forest-grass compound planting patterns for vegetation recover of the purple soil on the barren hillside are proven.4. In the thchonology investigation of the FGCP, The methods of dividing the new forest-grass compound planting patterns are definite,the techonology integration is clear to the public for the first time and the matching planting technology of eulaliopsis and the FGCP is regulated.In addition ,the core techonology---the techonology of the eulaliopsis binata pulp maken, of the industrialization exploitation of the compound planting of the forest -wood and eulaliopsis.