Medicinal Plant Abundance in Degraded and Reforested Sites in Northwest Pakistan
Medicinal Plant Abundance in Degraded and Reforested Sites in Northwest Pakistan
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DOI：
10.1659/mrd-journal-d-09-00017.1
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发表时间：
2010-02-01
影响因子：
1.6
通讯作者：
Hoefscher, Dirk
中科院分区：
文献类型：
--
作者：
Adnan, Muhammad;Hoefscher, Dirk
巴基斯坦西北部的森林资源受到严重威胁，对当地人民旨在通过不同类型的森林利用满足其生存需要的努力产生了不利影响。除了用作饲料和薪柴外，药用植物在当地人民的生计中发挥着重要作用。为了减少对剩余的原始森林的压力和依赖，一些森林被砍伐和退化的地点已经重新造林。本研究的目的是（1）比较再生林和以前的森林退化土地上的药用植物的丰度和（2）评估再生林的特点对药用植物丰度的影响。每种土地利用类型随机选择5个地块。在这些地块上，我们分析了10种常见和重要的草药植物的丰度和其他变量。频率，密度，和覆盖的10种药用植物显着高于恢复林地的网站比退化的网站。频率的高价值的物种，如Valeriana jatamansi，Bergenia ciliata，和Escomonia emodi增加了16倍，8倍和6倍的复林网站，分别。此外，药用植物的密度，覆盖和多样性（总）分别高7，5和2倍，和3种退化的网站上没有遇到造林网站。在造林样地，树断面积是最有影响力的变量与上述物种的丰度呈正相关。因此，我们的数据表明，在退化地点重新造林可以大大增加药用植物的丰富度，并可能成为改善当地人民生计和保护剩余天然森林资源的一种手段。
Forest resources in northwest Pakistan are under severe threat, negatively affecting local people aiming to meet their subsistence needs through different types of forest use. In addition to uses such as fodder and fuelwood, medicinal plants play an important role in the livelihoods of local people. To reduce pressure and dependency on remaining old-growth forests, some deforested and degraded sites have been reforested. The objectives of the present study were to (1) compare the abundance of medicinal plants on reforested and formerly forested degraded land and (2) assess the influence of reforested stand characteristics on the abundance of medicinal plants. Five plots were randomly selected per land use type. On these plots we analyzed the abundance and other variables of 10 herbal medicinal plants common and important for the rural human population. Frequencies, densities, and cover of the 10 medicinal plants were significantly higher on reforested sites than on degraded sites. Frequencies of highly valuable species such as Valeriana jatamansi, Bergenia ciliata, and Paeonia emodi increased 16-, 8- and 6-fold on reforested sites, respectively. Moreover, density, cover and diversity of medicinal plants (in total) were 7, 5, and 2 times higher, respectively, and 3 species absent on degraded sites were encountered on reforested sites. On reforested plots, tree basal area was the most influential variable positively correlated with the abundance of the aforementioned species. Thus, our data suggest that reforestation of degraded sites can greatly increase the abundance of medicinal plants and may be an instrument for improving the livelihoods of local people and protecting remaining natural forest resources.