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铁布自然保护区梅花鹿食物蕴藏量与负载量的测定

郭延蜀   

  1. 四川师范学院珍稀动植物研究所
  • 出版日期:2005-06-25 发布日期:2008-07-07

DETERMINATION OF SIKA DEER'S FOOD RESOURCES AND LOADING CAPACITY IN TIEBU NATURE RESERVE SICHUAN, CHINA

GUO Yanshu   

  • Online:2005-06-25 Published:2008-07-07

摘要: 1987 年2 月至2001 年8 月, 对铁布自然保护区( E102°58′~103°11′, N34°02′~34°12′)四川梅花鹿食物蕴藏量与负载量的野外调查结果表明: 四川梅花鹿的食物基地可划分为亚高山灌丛草甸、亚高山森林灌丛草甸、高山灌丛草甸、河谷灌丛草甸4 种类型, 它们的食物生产力分别为49.20 g/ m2 、48.09 g/ m2 、57.66 g/ m2和39.13 g/ m2 (干重) , 食物基地的总有效利用面积约为37.79 km2 , 食物理论蕴藏量为1 989.44 t , 四川梅花鹿的平均日食量干重约为3.61kg , 由此测算出保护区对鹿较适宜的理论负载量约为450~750 只, 最大理论负载量为1 500 只左右。冬末春初(2~4 月) 食物的蕴藏量是限制该保护区鹿种群数量的关键因子。影响食物蕴藏量与负载量的因子有干旱、放牧和人类生产活动的干扰。

关键词: 四川梅花鹿, 食物蕴藏量, 负载量, 铁布自然保护区

Abstract: From February 1987 to August 2001 , Sichuan sika deer's ( Cervus nippon sichuanicus ) food resources and loading capacity in Tiebu Nature Reserve ( E 102°58′~103°11′, N 34°02′~ 34°12′) were investigated. Sika deer's foraging habitat is divided into four types : subalpine brush meadow , subalpine forest brush meadow , alpine brush meadow and river-valley brush meadow. Their food output were 49.20 g/ m2 , 48.09 g/ m2 , 57.66 g/ m2 , 105.4 g/ m2 ( on dry weight basis) respectively. The total effective area for deer foraging in Tiebu Nature Reserve is 37.79km2 . The food resources were about 1 989.44 t (on dry weight basis ) . The average daily food consumption per Sichuan sika deer was about 3.61 kg (on dry weight basis) . It is estimated that the maximum theoretical number of deer population is about 1 500 for the reserve but the optimum number is about 450 - 750. The food resource between February and April is the critical factor in limiting the size of deer population in this Reserve. The factors influencing sika deer's food resources and loading capacity in Tiebu Nature Reserve are drought and disturbances from human and livestocks.

Key words: Sichuan sika deer ( Cervus nippon sichuanicus), Food resources, Loading capacity, Tiebu Nature Reserve