本文主要研究内容
作者（2019）在《Effects of Haloxylon spp. of Different Age Classes on Vegetation Cover and Soil Properties on an Arid Desert Steppe in Iran》一文中研究指出：In arid regions,afforestation has been considered as a method for ecological revival in terms of vegetation enrichment and soil amelioration.In this study,the effects of afforestation with Haloxylon spp.on vegetation cover and soil properties were measured<3,3,6,and 25 years after planting in an arid desert in Iran.Soil samples were collected at two depths(0-30 and 30-60 cm)under and between shrub canopies.Afforestation succession significantly affected plant community characteristics.In total,16 species from 8families and 15 genera were observed along the afforestation successional gradient.Plant species richness and diversity and vegetation cover increased slowly during the succession,and reached the maximum values in the area where Haloxylon had been planted for25 years.Soil nutrient values gradually increased during the succession,and the levels of organic matter,total nitrogen,available potassium,and available phosphorus were significantly higher under Haloxylon canopies than between them.Afforestation reduced soil pH under and between Haloxylon canopies during the succession,while soil electrical conductivity followed an opposite pattern.Haloxylon planting increased the silt content in the 0-30 cm soil layer.Our results suggest that Haloxylon establishment plays an important role in the reestablishment of desertified ecosystems in arid regions.
Abstract
In arid regions,afforestation has been considered as a method for ecological revival in terms of vegetation enrichment and soil amelioration.In this study,the effects of afforestation with Haloxylon spp.on vegetation cover and soil properties were measured<3,3,6,and 25 years after planting in an arid desert in Iran.Soil samples were collected at two depths(0-30 and 30-60 cm)under and between shrub canopies.Afforestation succession significantly affected plant community characteristics.In total,16 species from 8families and 15 genera were observed along the afforestation successional gradient.Plant species richness and diversity and vegetation cover increased slowly during the succession,and reached the maximum values in the area where Haloxylon had been planted for25 years.Soil nutrient values gradually increased during the succession,and the levels of organic matter,total nitrogen,available potassium,and available phosphorus were significantly higher under Haloxylon canopies than between them.Afforestation reduced soil pH under and between Haloxylon canopies during the succession,while soil electrical conductivity followed an opposite pattern.Haloxylon planting increased the silt content in the 0-30 cm soil layer.Our results suggest that Haloxylon establishment plays an important role in the reestablishment of desertified ecosystems in arid regions.
论文参考文献
论文详细介绍
论文作者分别是来自Pedosphere的，发表于刊物Pedosphere2019年05期论文，是一篇关于,Pedosphere2019年05期论文的文章。本文可供学术参考使用，各位学者可以免费参考阅读下载，文章观点不代表本站观点，资料来自Pedosphere2019年05期论文网站，若本站收录的文献无意侵犯了您的著作版权，请联系我们删除。