农田防护林的可持续经营管理

Sustainable management for farmland shelterbelts.

林带更新的时空布局对持续发挥林网的防护效益具有重要意义 .本文提出用拟法正林思想经营农田防护林 ,以行政村为组织经营单位 ,通过逐步更新调整组织经营单位管理的林带 ,使整个林网体系形成自幼龄到成熟龄各龄级林带条数基本相等、空间上均匀配置的格局 。

The spatio-temporal pattern of shelterbelt regeneration is an important issue which determinates whether shelterbelt network produces protective effects sustainably. This article developed a new method of imitating 'normal forest' to manage shelterbelts. Based on an administrative village as an organized management unit, each shelterbelt in the organized management unit will be individually regenerated and regulated, until the number of the shelterbelts in each age-class from young to mature ones will be equal, and the shelterbelts in each age-class will be spatially distributed uniformly in the shelterbelt network of an organized management unit. Consequently, this method might temporally ensure sustainable and stable ecological services which are provided by the shelterbelts in an organized management unit.