河北省太行山石灰岩退化山场生物承载力研究  

The Study on the Biomass Carrying Capacity of Limestone Devolution Mountain of taihang in Hebei

作　　者：王红[1] 张爱军[1] 周大迈[1] 姬惜珠[1] 张瑞芳[1] 冯伟[1] 

机构地区：[1]河北农业大学山区研究所,河北保定071001

出　　处：《中国农学通报》2006年第4期389-391,共3页Chinese Agricultural Science Bulletin

基　　金：河北省自然基金项目"河北省退化山场生物承载力研究"(3993173)。

摘　　要：针对河北省太行山石灰岩退化山场进行研究,通过对山场典型样点20年基本数据的搜集调查,对试验区在理想状态下的净第一性生产力进行预测,最后确立该地区净第一性植被生产力为6.75t/(hm2·a)干物质。长期以来,由于不合理经营、水土流失等原因导致生物的生存条件恶化,生物量明显降低。石灰岩区未开发地为3.29t/hm2干物质。通过在石灰岩区修造梯田等措施,人工加速岩石的风化成土速率,可以使土壤的物理性质、化学性质和生物学特性得到显著的改善,从而使生物的生存条件得到优化,石灰岩区生物承载力由3.62个羊单位提升到了7.36个羊单位和12.78个羊单位,生物承载能力明显提高。The limestone devolution mountain was studied in Hebei. The result showed that the biomass was 3.29 t/hm^2·dry substance in limestone devolution mountain, which was very low. The factors of Natural sources were improved which made the biomass carrying capacity step up from 3.62 sheep units to 7.36 sheep units and 12.78 sheep units. The biomass carrying capacity increased obviously.

关 键 词：石灰岩 退化山场 生物承载力 

分 类 号：S153.6[农业科学—土壤学]