1) Cash trees on slope-land
坡地经济林
2) non-timber forestry on the mountain
山地经济林
1.
Guangdong Province is a large province of non-timber forestry, but non-timber forestry on the mountain is relatively not good.
广东省发展山地经济林产业的必要性体现在:有助于优化经济发展模式;有助于改善人民群众生活;有助于促进生态建设和保护;有助于保障粮食安全等。
4) economic decline
经济滑坡
1.
On the economic decline of Pre-Soviet Union and the east Europe many comments have been made in the West which hold somehwat grounds, however, the fundamental causes are the extensive economic developing strategy and the continuing decline of the innate effectiveness of the planned economy.
对于前苏联东欧经济滑坡的原因,西方经济学界有多种理论分析,都有一定的道理,但其根本原因是粗放型经济发展战略以及内生的计划经济体制效用不断递减的结果。
5) economic (al) grade
经济坡度
6) woody sloping field
森林坡地
1.
In this paper, a 2-D distributed hydrology numerical model,which based on the law of conservation of mass and the law of conservation of energy and the specialty of conflux in woody sloping field, was developed to describe the unsaturated-saturated groundwater flow in woody sloping field.
根据质量、能量守恒定律和森林坡地产汇流特性，并结合土壤结构、地形、地貌条件和降雨情况，建立了描述森林坡地饱和与非饱和带水流运动规律的二维分布型水文数学模型，采用加辽金有限元数值方法求解模型，模拟了研究坡地的下渗和壤中流过程，在此基础上，叶研究坡地产流过程和下渗过程的特点作了较详细的分析。
补充资料：黄土高原坡地种果树
黄土高原坡地种果树
(下右) 黄土高原坡地 种果树 陶毓汾摄
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条