From the origin and connotation of the under-forest economy,this paper analyzed plight of the development of under-forest economy in Guangdong mountain areas. It discussed benefits of under-forest economy,favorable co...From the origin and connotation of the under-forest economy,this paper analyzed plight of the development of under-forest economy in Guangdong mountain areas. It discussed benefits of under-forest economy,favorable conditions and development path of under-forest economy in Guangdong mountain areas. Results indicate that developing under-forest economy is an essential path for realizing green growth and coordinated development of Guangdong mountain areas. However,due to terrain,market,management and technology reasons,the under-forest economy is still not fully developed in Guangdong mountain areas. The development path of under-forest economy suitable for Guangdong mountain areas should be based on ecological protection and oriented towards maximizing ecological,economic and social benefits. Guangdong mountain areas have in-born natural and resource advantages,economic pull of development mode and market demand change,and favorable condition of policy encouragement for development of under-forest economy. Finally,it came up with recommendations for development of under-forest economy in Guangdong mountain areas from development mode,industrial distribution and development direction.展开更多
基于通用土壤流失方程（universal soil loss equation，USLE）、遥感和ArcGIS空间分析技术，通过合理选择USLE模型中各土壤侵蚀因子的计算方法，对广东省山区土壤侵蚀量进行了估算，并对山区土壤侵蚀随土地利用类型、土壤类型、坡度及...基于通用土壤流失方程（universal soil loss equation，USLE）、遥感和ArcGIS空间分析技术，通过合理选择USLE模型中各土壤侵蚀因子的计算方法，对广东省山区土壤侵蚀量进行了估算，并对山区土壤侵蚀随土地利用类型、土壤类型、坡度及海拔高度的分布特征进行了分析。结果表明，广东省山区2000年土壤侵蚀总量为1．23×10。t，年均侵蚀模数为1080t／（km。·a），侵蚀强度为轻度。不同土地利用类型中，旱地的侵蚀强度最高，达2055t／（km2·a），林地和草地的侵蚀模数较小，分别为908和932t／（km2·a）。不同坡度等级的土壤侵蚀特征表现为坡度越陡，侵蚀强度越大。不同海拔高度的侵蚀特征表现为在0～1600mNi度，侵蚀强度随海拔高度的升高而增大；海拔高于1600m时，侵蚀强度随海拔高度的升高而下降。展开更多
基金Supported by Special Project for Key Sci-tech Output Planning of Guangdong Academy of Sciences(zdccyd201305)Science and Technology Planning Project of Guangdong Province(2012B061800066)
文摘From the origin and connotation of the under-forest economy,this paper analyzed plight of the development of under-forest economy in Guangdong mountain areas. It discussed benefits of under-forest economy,favorable conditions and development path of under-forest economy in Guangdong mountain areas. Results indicate that developing under-forest economy is an essential path for realizing green growth and coordinated development of Guangdong mountain areas. However,due to terrain,market,management and technology reasons,the under-forest economy is still not fully developed in Guangdong mountain areas. The development path of under-forest economy suitable for Guangdong mountain areas should be based on ecological protection and oriented towards maximizing ecological,economic and social benefits. Guangdong mountain areas have in-born natural and resource advantages,economic pull of development mode and market demand change,and favorable condition of policy encouragement for development of under-forest economy. Finally,it came up with recommendations for development of under-forest economy in Guangdong mountain areas from development mode,industrial distribution and development direction.
文摘基于通用土壤流失方程（universal soil loss equation，USLE）、遥感和ArcGIS空间分析技术，通过合理选择USLE模型中各土壤侵蚀因子的计算方法，对广东省山区土壤侵蚀量进行了估算，并对山区土壤侵蚀随土地利用类型、土壤类型、坡度及海拔高度的分布特征进行了分析。结果表明，广东省山区2000年土壤侵蚀总量为1．23×10。t，年均侵蚀模数为1080t／（km。·a），侵蚀强度为轻度。不同土地利用类型中，旱地的侵蚀强度最高，达2055t／（km2·a），林地和草地的侵蚀模数较小，分别为908和932t／（km2·a）。不同坡度等级的土壤侵蚀特征表现为坡度越陡，侵蚀强度越大。不同海拔高度的侵蚀特征表现为在0～1600mNi度，侵蚀强度随海拔高度的升高而增大；海拔高于1600m时，侵蚀强度随海拔高度的升高而下降。
