文献类型: 外文期刊
作者: Liu, G. D. 2 ; Michalk, D. L. 1 ; Bai, C. J. 2 ; Yu, D. G. 1 ; Chen, Z. Q. 2 ;
作者机构: 1.Orange Agr Inst, New S Wales Dept Primary Ind, Orange, NSW 2800, Australia
2.Chinese Acad Trop Agr Sci, Trop Crops Genet Resources Inst, Danzhou 571737, Hainan, Peoples R China
关键词: biodiversity;productivity;rangelands;Stylosanthes
期刊名称:RANGELAND JOURNAL ( 影响因子:1.09; 五年影响因子:1.51 )
ISSN: 1036-9872
年卷期: 2008 年 30 卷 2 期
页码:
收录情况: SCI
摘要: China's 79 million ha of tropical and subtropical grasslands represent a significant national forage resource with a potential for further development for sustainable livestock production. The species rich original forest vegetation has been converted through natural and human activities to secondary forest, grassland and agricultural land. The grasslands which include savannah, shrubland, coppice forest and arable land sown with exotic legumes and grasses are expected to become China's third largest livestock production zone. Despite degradation the grasslands retain a high level of biodiversity which has been preserved in germplasm depositories with on-going collection expeditions throughout south China. Productivity of natural grasses is moderate (< 5 t DM/ha) but can be increased significantly by augmenting with Stylosanthes and other introduced legumes adapted to the infertile or acidic soils and seasonal rainfall.
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