VEGETATION STRUCTURE AND DYNAMICS OF PINUS-GERARDIANA FORESTS IN BALOUCHISTAN, PAKISTAN

被引：46

作者：

AHMED, M

ASHFAQ, M

AMJAD, M

SAEED, M

机构：

[1] MAF Technology, Ruakura Agricultural Centre, Hamilton, East Street, Private Bag

[2] Department of Botany, University of Balouchistan, Quetta

来源：

JOURNAL OF VEGETATION SCIENCE | 1991年 / 2卷 / 01期

关键词：

AGE DISTRIBUTION; BASAL AREA; DENSITY; GROWTH RATE; SIZE-CLASS FREQUENCY DISTRIBUTION;

D O I：

10.2307/3235904

中图分类号：

Q94 [植物学];

学科分类号：

071001 ;

摘要：

44 forest stands, including 42 stands with Pinus gerardiana Wall. ex Lamb dominant and two stands with broad-leaved trees, were sampled in the Suleiman Range in Balouchistan. Density of Pinus gerardiana trees ranged from 24 to 930 trees / ha with a mean of 266 individuals / ha; the average basal area was 25.5 m2 ha-1. Adequate recruitment of Pinus seedlings was observed; higher seedling density is recorded from east-facing slopes, while tree density was higher on west-facing slopes. The average growth rate was estimated as 0.08 cm / yr radial growth. However, trees on high elevations and cooler slopes grow faster. Soil variables showed no correlation with density, basal area or importance values. It is suggested that the present degraded stage of the forests in the study area is of anthropogenic origin.

引用

页码：119 / 124

页数：6

共 23 条

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