干旱荒漠区植被恢复与重建的探讨

西北干旱荒漠区生境严酷，物种贫乏，植被稀疏低矮，加上不合理的开发利用，致生境恶化。利用当地有限的水源来实现干旱荒漠区的植被恢复，防止流沙蔓延，可以从以下两方面入手：一方面，以裸地为立地条件，利用当地的关键种(keystone specics)或优势种(dominant species)，选择合适的生境，采用人工种子库和幼苗移植等方法，促使已缺失的植物种在目的地重新定居；另一方面，利用灌丛效应选择合适物种加以配合，提高干旱荒漠区的植被盖度。研究表明：以上两种途径对实现干旱荒漠区的植被恢复和重建是可行的。

Exploration of Restoration and Reconstruction of Vegetation in The Arid Desert Area

In the Arid Area there are rigorous inhabitations, poor species and thin and short vegetation. In addition to the estrepement, inhabitations drastically degrade. There are two methods to restore and reconstruct vegetation with the limited water. One is to make the first plant (dominant species or keystone species adapted to the local inhabitations) succeed in settling the naked desert,by setting artificial seed banks and transplanting seedlings. The other is to choose adequate species to improve the vegetation coverage in virtue of effects of shrubs. Studies show: the above methods are feasible.