样本分层对毛竹林地上部分碳储量估算精度的影响

doi:10.11707/j.1001-7488.20130603

Abstract

Abstract:

Based on a combined use of landsat thematic mapper (TM) and field measurements, original plots and stratified plots according to cosine of incidence angle, which can represent correlation of terrain and sun light,were respectively used for variables of multiple regression models to estimate the aboveground carbon storage of moso bamboo (Phyllostachys edulis) forest. Results showed that: dispersion degree of sample plots decreased and correlation coefficients between remote sensing variables and aboveground carbon storage increased through stratified sample plots; The fitting (RMSE=4.07 MgC·hm^-2) and predicted (RMSE=4.63 MgC·hm^-2) accuracy of model with stratified sample plots were high than that of model with original samples; the improvement was of statistical significance for those high and low aboveground carbon storage value based on stratified plots strategy. The stratified sample plots method provided in this study is still needed to be tested with different images and forest types in future studies.

Key words: moso bamboo forest, aboveground carbon storage, cosine of incidence angle, stratified sample plots

CLC Number:

S758.5

Xu Xiaojun, Zhou Guomo, Du Huaqiang, Zhou Yufeng, Hu Junguo, Lu Guofu. Effects of Sample Plots Stratification on Estimation Accuracy of Aboveground Carbon Storage for Phyllostachys edulis Forests[J]. Scientia Silvae Sinicae, 2013, 49(6): 18-24.

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Effects of Sample Plots Stratification on Estimation Accuracy of Aboveground Carbon Storage for Phyllostachys edulis Forests

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