FINE ROOT TURNOVER IN FOREST ECOSYSTEMS IN RELATION TO QUANTITY AND FORM OF NITROGEN AVAILABILITY - A COMPARISON OF 2 METHODS

被引：289

作者：

ABER, JD

MELILLO, JM

NADELHOFFER, KJ

MCCLAUGHERTY, CA

PASTOR, J

机构：

[1] MARINE BIOL LAB, CTR ECOSYST, WOODS HOLE, MA 02543 USA

[2] VIRGINIA POLYTECH INST & STATE UNIV, DEPT BIOL, BLACKSBURG, VA 24061 USA

[3] OAK RIDGE NATL LAB, DIV ENVIRONM SCI, OAK RIDGE, TN 37830 USA

来源：

OECOLOGIA | 1985年 / 66卷 / 03期

关键词：

D O I：

10.1007/BF00378292

中图分类号：

Q14 [生态学（生物生态学）];

学科分类号：

071012 ; 0713 ;

摘要：

Two methods of estimating fine root production and turnover are compared for 13 forest ecosystems exhibiting a wide range in form (NH4+ vs. NO3-) and quantity of available N. The 2 methods are by comparison of seasonal maxima [max] and minima [min] in biomass and by N budgeting. Both methods give similar results for stands with low rates of nitrification. The budgeting method predicts higher fine root turnover and productivity than the max-min method for systems with significant rates of nitrification.

引用

页码：317 / 321

页数：5

共 20 条

[1]

ABER JD, 1983, ECOLOGICAL B STOCKHO, V35, P179

[2]

Chapin F.S., 1981, Fire Regimes and Ecosystem Properties. Proceedings of the Conference. December 11-15 Honolulu, Hawaii. USDA Forest Service Technical Report WO-26 Eds, P301

[3]

Chapin FS, 1980, ANNU REV ECOL SYST, V11, P223

[4] CARBON CYCLING IN A MIXED DECIDUOUS FOREST FLOOR [J].