| 系统抽样法在更新造林成活率调查中的应用 |
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| 引用本文： | 贾云奇.系统抽样法在更新造林成活率调查中的应用[J].东北林业大学学报,1989,17(2):84-88. |
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| 作者姓名： | 贾云奇 |
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| 作者单位： | 黑龙江省合江林业管理局 |
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| 摘 要： | 根据数理统计学原理确定样地数量和样地地点间距离,克服标准地的主观选设因素,作到样地多,分布均,调查全面,精度准确。调查结果,合江林区1986年更新造林185 333ha,全区抽样地数量按减半计算,调查精度仍达99.85％,系统抽样法为完善更新造林,经营承包责任制,丰富承包内容,提供可靠标准。
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| 关 键 词： | 系统抽样法 造林 成活率 |
INVESTIGATING SURVIAL RATE IN AFFORESTATION AND REGENERATION BY SYSTEMATIC SAMPLING |
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| Jia Yun qi.INVESTIGATING SURVIAL RATE IN AFFORESTATION AND REGENERATION BY SYSTEMATIC SAMPLING[J].Journal of Northeast Forestry University,1989,17(2):84-88. |
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| Authors: | Jia Yun qi |
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| Institution: | Jia Yun qi (Silviculture office of Hejiang Forest Management Bu(?)au) |
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| Abstract: | It can overcome the subjective view of sele(?)ting sample plots, and there are more sample plots, distributed uniformly, allround investigated with higher accuracy to determine the amount and interval of sample plots, according to the mathematical statistics. The area of afforestation and regeneration in Hejiang forest region was 185 333ha in 1986. The amount of sample plots is only half, but with accuracy of 99.85%. It supplies dependable, standard of systematic sampling for improving afforestation and regeneration. |
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| Keywords: | Systems Sampling Investigate Accuracy |
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