Research on Logical Checking Methods for Plot Data of Multi-period Forest Investigation

doi:10.13466/j.cnki.lyzygl.2019.05.014

Abstract

Abstract:

Logical inspection is an important part of the statistical work of forestry investigation,and it is also the verification and confirmation of the previous investigation data.Based on the data processing flow,this paper designs the pre-logical checking method and post-logical checking method.Pre-logical checking includes sample factor logic checking,sample tree factor logic checking and multi-period data correlation checking.Multi-period data correlation checking adds multi-period data vertical comparison on the basis of previous single-period data logic checking,which is conducive to dealing with various logical errors in data.After logical checking,the stand factors of the same period after statistical calculation are calculated and compared with those of the adjacent period,and most of the data input and program calculation errors can be checked out.At the same time,this paper uses VB and built-in SQL language to develop relevant program tools,and embeds the logic check method into the program.

Key words: logical inspection, forest factors forest resource investigation, site factors, Visual Basic

CLC Number:

S757.2
TP391

GUO Hong, YOU Lei, LEI Xiangdong, XIE Yangsheng, HONG Lingxia. Research on Logical Checking Methods for Plot Data of Multi-period Forest Investigation[J]. FOREST RESOURCES WANAGEMENT, 2019, 0(5): 84-88.

Figures/Tables 4

Tab.1

Fig.1

Fig.2

Tab.2

修正编码	处理类型	修正类型	处理方法
16	16	漏测木	后期补前期树种,检尺类型改为胸径错测木
			1)本期树种补所有前期树种
			2)本期检尺类型改为胸径错测木
			3)补所有前期的胸径(进界)
			4)前期为枯立木(13),所有前期改为保留木(11)
			5)前期为枯倒木(15),所有前期改为保留木(11)
17	17	多测木	所有检尺因子都相同的,保留一条记录,否则都删除
18	18	胸径错测木	后期补前期
19	19	树种错测木	根据后期的检尺类型(19)修正当期X的树种代码
20	20	类型错测木	改为保留木(11)(如果是第一期数据则不做处理)
			1)前期为采伐木(14),所有前期改为保留木(11)
			2)前期为枯立木(13),所有前期改为保留木(11)
			3)前期为枯倒木(15),所有前期改为保留木(11)
30	31,41	直径不变	内插方式修正当期保留木的胸径(31)
			外推方式修正当期保留木的胸径(41)
40	31、41	倒长	内插方式修正当期保留木的胸径(31)
			外推方式修正当期保留木的胸径(41)
50	50	枯立木(13)、采伐木(14)、枯倒木(15)	将后期的胸径设置为0
60	60	进界木	外推方式修正进界木的当期胸径
160	160	漏测木	将当期及前期的树种代码,设置为本期的树种代码

错误分类	错误类别	期数	数量
样地因子	样地重号	一期	0
	样地重号	二期	0
	横坐标	二期对比	8
	纵坐标	二期对比	3
	海拔	二期对比	21
	坡度	二期对比	19
	坡位	二期对比	33
	土壤名称	二期对比	2
	土壤厚度	二期对比	18
样木因子	样木重号	一期	20
	样木重号	二期	20
	特大胸径	一期	2
	特大胸径	二期	0
相关检查	类型错测木	一期	538
	类型错测木	二期	2
	胸径相同	二期对比	3432
	倒长	二期对比	115
	进界木	二期对比	321
后逻辑检查	调查时间与平均年龄对照	二期对比	28
	高径比检查	一期	2
	高径比检查	二期	3
	断面积计算	一期	0
	断面积计算	二期	0
	形数检查	一期	101
	形数检查	二期	88
	直径检查	一期	0
	直径检查	二期	0

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