The experiments of artificial mixture sowing forestation in dry and hot valley anddry mountain area have been done from 1991 to 1992 in Dalongtan,Maomao mountain ofYongsheng County and Shuixie of Yongping County.

Effects of mulching on emergence rate of direct seeding of four tree species

This paper expounds afforesting technique of direct seeding oriental arborvitae from place choice, seeding season, afforesting method, seedling management etc and discusses technical points from experience.

Although in the early phases of establishment direct seeded sites can appear abandoned and unmanaged compared to neatly planted, well-maintained rows of trees, direct seeding has a number of potential advantages over conventional planting of intact root system, a good suitability of planting site, simple construction and being cheaper (Willough et al.

Through field investigation,sampling and indoor analysis,the features of vegetation community and changes of soil physical and chemical property have been studied in aerial seeding area in Wushen County.

Based on the survey of the aerial seeding result and the meteorological elements from 1996 to 2005 in the aerial seeding area(take Xunxi county,Chunhua county,Liquan county as examples)of Xianyang,the regression analysis for the effects of the aerial seeding and meteorological elements has been done and the dominant elements affecting the aerial seeding effects has been found out.

To improve the level of integrated national afforestation inspection technology,the authors of this paper chose Hangjinqi as a study area and analyzed the effect of using remote sensing technology for checking the achievement and results of artificial afforestation,enclosure of the hillside for regeneration and aerial seeding.

Study on improving Seed-base materials for afforestation by direct seeding;

Study on the experiment of aerial seeding afforestation by Global Positioning System(GPS);

Based on the 50 year history of aerial seeding afforestation and the characteristics of forest resource by aerial seeding,issues related to the management of the forest resource are discussed,and the measures and suggestions are present.

Based on the situation of afforestation by aerial seeding around Beijing, this paper discusses the existing issues related to afforestation by aerial seeding, and puts forward the measures and thought to improve the quality of afforestation by aerial seeding and the ecological environment around Beijing.