湖南省退耕还林造林模式探讨

在大量调查湖南省退耕还林实际情况的基础上，根据不同坡度、地形、习惯、经济、市场、加工企业情况等，研究了现有湖南省退耕还林造林模式布局与配置，并对湖南省退耕还林典型造林模式进行了总结。据此提出，造林模式设计时，应优先考虑由本地地带性植被构成的稳定性自然顶级群落，再考虑人为优化设计和精密结构布局，充分利用不同时空环境资源（光线、水份、营养互补），从而最大限度地增加单位空间的植物生产量。

Study on the afforestation mode of the returning land for farming to forestry in Hunan

Based on the investigation of the actual situation of the returning land for farming to forestry in Hunan,and the different situation of gradient,landform,custom,economy,markets and processing enterprise,the present distribution and arrangement of the afforestation mode of the returning land for farming to forestry were studied in Hunan,the typical afforestation mode of the returning land for farming to forestry was summarized in the paper.In the design of the afforestation mode,at first the stable natural upstage community which in local zonality vegetation should be consided,then the artificial optimize design and exactitude constructive distribution.Make full use of the different spatio-temporal environmental resource(light,water,and nutrition complementary) to increase the maximum plant's growth production capacity of unit space.