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| 黄土丘陵区沙棘地上部生物量估测模型 | |
| 引用本文： | 阮成江,李代琼. 黄土丘陵区沙棘地上部生物量估测模型[J]. 陕西林业科技, 1999, 0(2): 5 |
| 作者姓名： | 阮成江 李代琼 |
| 作者单位： | 中国科学院水利部水土保持研究所 |
| 摘 要： | 根据沙棘生长因子与其地上部生物量间的相关关系，以生长因子为自变量，沙棘地上部生物量为因变量，应用主成分分析和多元回归分析方法，依据最优子集和平均残差平方和的优选原则，从单生长因子、双生长因子、多生长因子估测模型中，筛选出具有最优性质的沙棘地上部生物量估测模型，复相关系数为０．９４２１～０．９９５９，经检验均达十分显著水平。这一研究结果改进了非破坏性调查沙棘地上部生物量的方法。 |
| 关 键 词： | 半干旱黄土丘陵区；沙棘地上部生物量；生长因子；多元回归分析；估测模型 |
Quantitative models of estimating aboveground biomass of Hippophae rhamnoides on semiarid loess hilly region |
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| RUAN ChengjiangLI Daiqiong. Quantitative models of estimating aboveground biomass of Hippophae rhamnoides on semiarid loess hilly region[J]. Shaanxi Forest Science and Technology, 1999, 0(2): 5 | |
| Authors: | RUAN ChengjiangLI Daiqiong |
| Abstract: | According to the correlation of growth factor (independent variable) and aboveground biomass (dependent variable),the authors chose the best estimating models from onegrowth factor,twogrowth factors and severalgrowth factors by the method of principal analysis and multivariate regression and the optimum seeking principle of proper gather and average sum of squares of residual,RAW Rsquared was 0.94210.9959.The results improved the method of nondestructively measuring biomass of aboveground parts of Hippophae rhamnoides. |
| Keywords: | semiarid loess hilly region Hippophae rhamnoides aboveground biomass growth factor estimating model HK |
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