| 1. | Multistage sampling in forest inventory is not restricted to fixed-area sampling units .
森林资源清查中，多阶抽样并不局限于固定面积的抽样单元。 |
| 2. | Research on micro - computer handheld forest inventory system
我国农业专家系统的研究进展 |
| 3. | Codes for forest resources . forest inventory
森林资源代码.森林调查 |
| 4. | Central south forest inventory and planning
中南林业调查规划 |
| 5. | Continuous forest inventory
森林资源连续清查法 |
| 6. | Forest inventory and planning
林业调查规划 |
| 7. | Based on the observation data obtained from 69 sampling sites of different age class forests , and by using biomass expansion factor function , the regression equations of stand biomass and volume of the main forest forests in pearl river delta were built , and the regional forest biomass and its dynamics were estimated on the basis of forest inventory data
摘要利用生物量转换因子连续函数法，通过69组不同龄级的森林样地实测数据，拟合了珠江三角洲主要森林类型的生物量和蓄积量之间的回归方程，并结合3个时段森林清查资料，估算了区域森林生物量及其动态。 |
