Gum arabic yield in differently managed Acacia senegal stands in western Sudan

被引：34

作者：

Ballal, ME

El Siddig, EA

Efadl, MA

Luukkanen, O

机构：

[1] Viikki Trop Resources Inst, FIN-00014 Helsinki, Finland

[2] Univ Khartoum, Fac Forestry, Khartoum, Sudan

[3] El Obeid Agr Res Stn, Al Ubayyid, Sudan

来源：

AGROFORESTRY SYSTEMS | 2005年 / 63卷 / 03期

关键词：

natural stand; non-timber tree product; shifting cultivation; stand type; trees on farmland; tree tapping;

D O I：

10.1007/s10457-005-4162-x

中图分类号：

S3 [农学（农艺学）];

学科分类号：

0901 ;

摘要：

A comparative study of gum arabic yield trends per tree and picking in relation to stand management (by farmers and by researchers) and type (natural and planted) was conducted at two locations in North Kordofan, Sudan, for a three-year period. In addition, eight-year yield trends in relation to rainfall were compared based on the 19932000 gum yield data from 1440 trees. Although the gum arabic yield followed the same trend over time in all stands at both locations, the gum yield from farm stands, whether planted or natural, was 47% to 60% lower than that from research stands. Late tapping reduced the gum yield by 40% and 50% at the two different locations, respectively. Yield was highly affected by rainfall, correlating positively with annual rainfall in six of the eight years of the study. These findings can be used for improving gum arabic yield through management interventions and for predicting yield in relation to stand type, management regime and rainfall.

引用

页码：237 / 245

页数：9

共 25 条

[1]

Abdel Rahman H. M., 2013, THESIS SUDAN ACAD SC

[2]

BADI KHM, 1989, FORESTS SUDAN KHARTO

[3] The economic linkages between rural poverty and land degradation: some evidence from Africa [J].