Biomass equations for shrub species of Tamaulipan thornscrub of North-eastern Mexico

被引：90

作者：

Návar, J

Méndez, E

Nájera, A

Graciano, J

Dale, V

Parresol, B

机构：

[1] UANL, Fac Ciencias Forestales, Leon 67700, Mexico

[2] Inst Tecnol Forestal, Durango, Mexico

[3] Oak Ridge Natl Lab, Div Environm Sci, Oak Ridge, TN 37831 USA

[4] USDA, Forest Serv, So Res Stn, Asheville, NC USA

来源：

JOURNAL OF ARID ENVIRONMENTS | 2004年 / 59卷 / 04期

关键词：

above-ground biomass components; additive least-squares techniques; arid; semi-arid and subtropical shrub species;

D O I：

10.1016/j.jaridenv.2004.02.010

中图分类号：

Q14 [生态学（生物生态学）];

学科分类号：

071012 ; 0713 ;

摘要：

Nine additive allometric equations for computing above-ground, standing biomass were developed for the plant community and for each of 18 single species typical of the Tamaulipan thornscrub of north-eastern Mexico. Equations developed using additive procedures in seemingly unrelated linear regression provided statistical efficiency in total biomass estimates at the scales of both individual species and at the plant community. A single equation for each species improves efficiency in biomass estimates by 12.5% in contrast to using a single equation for the plant community. Therefore, additive equations developed in seemingly unrelated linear regression of parameter estimation are recommended to compute biomass components and total biomass for the species described. (C) 2004 Elsevier Ltd. All rights reserved.

引用

页码：657 / 674

页数：18