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Long-term monitoring of semi-natural woodland at Mar Lodge Estate NNR

机译：Mar Lodge Estate NNR的半天然林地长期监测

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In 1998 two monitoring transects, totalling 1.8km in length and 3-7ha in area, were established in semi-natural Caledonian pine and birch woodland at Mar Lodge Estate National Nature Reserve. These transects were resurveyed in 2008 and 2018. From 1998to 2008, following a reduction in the resident population of deer in the Mar Lodge woodlands, there was a modest increase in the number of regenerating tree seedlings, above vegetation height, recorded in the survey area. From 2008-2018, following a further substantial reduction in deer numbers, there was a 2,074% increase in the number of seedlings above vegetation height. There was a 78.9% increase in trees >1.3m in height from 2008-2018. This recruitment sits against a background of changes to woodland structure, with a small increase in tree basal area and a small decrease in canopy cover over the monitoring period, and an increase in the deadwood resource. From 1998-2018, mortality of mature Scots pine trees was 2.6% and mortality of mature birchtrees 16.5%. There were also changes in ground flora structure and diversity from 2008-2018. Monitoring has shown that from 2008-2018 there has been a shift towards a more diverse woodland structure, with an increase in woodland regeneration, deadwood provision and vascular plant diversity. Monitoringhas also helped to inform management decisions throughout this period. It is hoped that this valuable experience, and lessons learned from it, will encourage other land managers to set up long-term monitoring of woodlands across Scotland.
机译：在Mar Lodge Estate Nature Nature Reserve的半天然Caledonian Pine和Birch Woodland，在1998年，在半天然喀里多尼亚杉木和桦木林地建立了两次监测横断面，总计1.8公里，3-7千米。这些横断面将于2008年和2018年重新调度。从1998年到2008年，在Mar Lodge林地鹿的常驻人口减少后，再生树幼苗数量较大，植被高于植被高度，记录在调查区。从2008 - 2018年开始，在鹿数进一步减少后，植被高度上方的幼苗数量增加了2,074％。树木增长78.9％>高于2008 - 2018年的1.3米。这一招聘符合林地结构的变化背景，树基底较小，在监测期内占顶篷覆盖的少量减少，占金代资源增加。从1998 - 2018年起，成熟苏格兰群落的死亡率为2.6％，成熟桦树的死亡率为16.5％。 2008 - 2018年，地面植物结构和多样性也有变化。监测表明，从2008 - 2018年开始，朝着更多样化的林地结构转变，随着林地再生，枯木供应和血管植物多样性增加。监控也有助于在整个期间内提供管理决策。希望这一宝贵的经验和从中吸取的经验教训将鼓励其他土地管理人员在苏格兰的林地中建立长期监测。

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    《Scottish Forestry》 |2020年第1期|共10页
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