Exploration of Stratified Sampling Technologies Based on High Definition Aerial Photogragh for Forest Resources Inventory and Planning

doi:10.13466/j.cnki.lyzygl.2018.03.022

Abstract

Abstract:

On the basis of the original systematic sampling of forest resources,using high-definition imagery,combined with forest resources base maps,business archives,and other data,each sample plot is interpreted on a block-by-block basis to obtain stratification factors,and the types and weights of each stratum are determined.The sample size of the plan was sampled by stratification,supplemental surveys were conducted,and the number of features of different scenarios was calculated and compared.The results show that the adoption of high-definition image stratified sampling technology can significantly reduce the number of survey sites and improve the sampling accuracy,which has extensive popularization value.

Key words: stratified sampling, high-definition video, forest resources survey, forest volume, Songyang County

CLC Number:

ZHU Lei. Exploration of Stratified Sampling Technologies Based on High Definition Aerial Photogragh for Forest Resources Inventory and Planning[J]. FOREST RESOURCES WANAGEMENT, 2018, (3): 129-132.

层序号	层	权重系数	方案1样地数	方案2样地数
1	针幼疏	0.0664	19	10
2	针幼中	0.0140	4	2
3	针幼密	0.0070	2	1
4	针中疏	0.0315	9	5
5	针中中	0.0385	11	6
6	针中密	0.0629	18	9
7	针成疏	0.0385	11	6
8	针成中	0.0804	23	12
9	针成密	0.2097	60	31
10	阔幼疏	0.1119	32	17
11	阔幼中	0.0944	27	14
12	阔幼密	0.1119	32	17
13	阔中疏	0.0035	1	1
14	阔中中	0.0175	5	3
15	阔中密	0.0559	16	8
16	阔成疏	0.0140	4	2
17	阔成中	0.0070	2	1
18	阔成密	0.0350	10	5
合计	—	1.0000	286	150

类型	总样本量/个	总体平均数	标准误	绝对误差限	相对误差限/%	抽样精度/%	总体蓄积估计区间/m³
常规方法	476	3.3244	0.1888	0.3666	11.1	88.9	5173553~6469780
方案1	286	4.4735	0.1297	0.2542	5.4	94.6	5957935~6236139
方案2	150	4.7838	0.2053	0.4024	8.4	91.6	5936422~6376788

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Exploration of Stratified Sampling Technologies Based on High Definition Aerial Photogragh for Forest Resources Inventory and Planning

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