Studies on Assignment of N、P、K、Ca、Mg in Orchard Ecosystems;

The results uncovered that spatial pattern of orchard ecosystems in the watershed was relatively adaptive to local natural settings, but the community structure and area proportion of the fruit tree species can t meet the demand of th.

Control of fertilizer nutrients is one of the important research fields in mango plantation ecosystem, and it includes such techniques as fertilization proportion, application rate, application period and method, which are proposed based on nutrient diagnosis and formulated fertilization and promote the researches of mango plantations ecosystem.

At the same time pointed out that the fruit industry development of Qixia city exist its own disadvantage,facing many threats,and separately from the government,farmers,enterprise view giving countermeasures and proposals which help to speed up the eco-fruit industry cluster development.

It is important to study flexibility analysis method of large scale systems with material flow links between subsystems , for example, in the study on industrial ecosystem.

After reviewing relative returns,the authors present 5 hypotheses about structural influential factors in the stability of industrial ecosystem(IES) in China: keystone species enterprise,member distance,member reliability,industry diversity and conductor factor.