التفاصيل البيبلوغرافية
| العنوان: |
Needle longevity of Scots pine in relation to foliar nitrogen content, specific leaf area, and shoot growth in different forest types |
| المؤلفون: |
Pensa, Margus, Sellin, Arne |
| المصدر: |
Canadian Journal of Forest Research ; volume 32, issue 7, page 1225-1231 ; ISSN 0045-5067 1208-6037 |
| بيانات النشر: |
Canadian Science Publishing |
| سنة النشر: |
2002 |
| مصطلحات موضوعية: |
Ecology, Forestry, Global and Planetary Change |
| الوصف: |
The aim of the study was to examine whether the variation in needle longevity of Scots pine (Pinus sylvestris L.) is of a community-specific nature. Altogether 300 trees were examined in Vaccinium, dry heath, and pine bog forests in Estonia. Mean number of needle age-classes was 4.1 for all forest types, while mean survivorship of needles averaged 70% in Vaccinium forests and 80% in the others (p < 0.01). Mean mass-based nitrogen content (N m ) of the needles was the highest in Vaccinium forests (11.8 mg·g 1 , p < 0.05) and lower in dry heath (10.4 mg·g 1 ) and pine bog (9.8 mg·g 1 ) forests. Specific leaf area (SLA) did not differ between Vaccinium (6.3 mm 2 ·mg 1 ) and dry heath (6.0 mm 2 ·mg 1 ) forests but was lower in pine bog forests (5.5 mm 2 ·mg 1 , p < 0.05). Shoot length increment was the smallest in pine bog forests (45.1 mm·year 1 , p < 0.05) and did not differ between Vaccinium (92.2 mm·year 1 ) and dry heath (95.2 mm·year 1 ) forests. Our findings confirm that the small-scale variation in needle longevity of Scots pine has a community-specific pattern and is in accordance with the trends in N m and SLA. |
| نوع الوثيقة: |
article in journal/newspaper |
| اللغة: |
English |
| DOI: |
10.1139/x02-044 |
| الإتاحة: |
https://doi.org/10.1139/x02-044Test |
| حقوق: |
http://www.nrcresearchpress.com/page/about/CorporateTextAndDataMiningTest |
| رقم الانضمام: |
edsbas.7A79F5FC |
| قاعدة البيانات: |
BASE |
