Zum Wachstum der Walnuss-Frucht-Wälder in Süd-Kirgistan unter Berücksichtigung verschiedener Standortsfaktoren und Bewirtschaftungsformen

Tharandt

2008

S. 89-101

7 Abb., 2 Tab., 34 Lit. Ang.

Artikel aus einer ZeitschriftUnselbständiges Werk

200151434

This dendroecological study uses time series of climate, and radial growth and nut production of Persian Walnut (Juglans regia L.) to investigate the relationships between these parameters. More than 200 trees growing at sites of different altitude, aspect, inclination and human-impact intensity were sampled in walnut-fruit forests of the Jalal Abad region in Southern Kyrgyzstan. Tree rings were dated and ring widths measured. Wide and narrow tree rings, so called positive and negative pointer years, could be explained by climatic events. The mean annual increment differed significantly in different regions and altitudes. The highest values could be found in plantations and at higher altitudes (1700-2000 m a.s.l.). The study shows that Persian walnut (Juglans regia L.) of South Kyrgyzstan can be used in dendrochronological studies, and illustrates the influence of management practices on radial growth.