NET PRIMARY PRODUCTIVITY OF 2 MANGROVE FOREST STANDS ON THE NORTHWESTERN COAST OF SRI-LANKA

被引：75

作者：

AMARASINGHE, MD ^{[1
]}

BALASUBRAMANIAM, S ^{[1
]}

机构：

[1] UNIV PERADENIYA, DEPT BOT, PERADENIYA, SRI LANKA

来源：

HYDROBIOLOGIA | 1992年 / 247卷 / 1-3期

关键词：

MANGROVE ECOSYSTEMS; ESTUARINE MANGALS; FRINGING MANGALS; LITTERFALL; PRIMARY PRODUCTIVITY;

D O I：

10.1007/BF00008203

中图分类号：

Q17 [水生生物学];

学科分类号：

071004 ;

摘要：

Productivity studies were carried out from September, 1985 to August, 1987 in two mangrove stands, i.e. estuarine and island fringing, in Dutch bay, a lagoon situated on the northwestern coast of Sri Lanka. Net above-ground primary productivity was measured by monitoring litterfall and above-ground biomass increment. The average annual rate of litterfall in the estuarine and island-fringing mangrove stands are 588.14 g m-2 (approximately 6 t ha-1) and 407.33 g m-2 (approximately 4 t ha-1) respectively. The average annual rates of above ground woody growth are 614.74 g m-2 (approximately 6 t ha-1) in the estuarine stands and 286.8 g m-2 (approximately 3 t ha-1) in the island-fringing mangrove stands. Hence estuarine mangrove stands record a higher annual rate of above-ground net primary production (NPP; 1207.88 g m-2 or approximately 12 t ha - 1) than the fringing mangrove stands (694.22 g m-2; approximately 7 t ha-1). the annual rate of NPP in the water front zones of the stands (1 300.47 g m-2 in the estuarine stands and 874.56 g m-2 in the fringing stands) are greater than those in the back-mangrove zones (115.28 g m-2 in the estuarine stands and 513.88 g m-2 in the island-fringing stands). These variations may be attributed to the differences in tidal flushing and influence of freshwater in the two localities.

引用

页码：37 / 47

页数：11

共 21 条

[1]

AMARASINGHE MD, HYDROBIOLOGIA, P247

[2]

Carter MR, 1973, 904974002 EPA

[3]

Cintron G., 1985, BOT NATURAL HIST PAN, P53

[4] THE PRODUCTIVITY AND COMPOSITION OF MANGROVE FORESTS, LAGUNA DE TERMINOS, MEXICO [J].