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湘中花岗岩丘陵区水土流失严重，１９８６－１９９６年结合生产实践进行大面积水土保持林效益研究表明：采用生物措施为主，工程措施为辅的综合治理，能在短时间内取得最佳生态、经济、社会效益。
The soil erosion in the granite hilly area of Xiangzhong was serious. The research on the benefits of large-scale soil and water conservation forests in 1986-1996 showed that the comprehensive management with biological measures and engineering measures supplemented could achieve the best ecological, Economic and social benefits.