Yarı-nemli koşullarda yetişen bir Anadolu karaçamının yıllık su tüketimi

Year 2018, Volume: 68 Issue: 2, 101 - 105, 20.07.2018

Mehmet Said Özçelik

Abstract

DOI: 10.26650/ forestist.2018.344844

Bu çalışmanın amacı İstanbul Belgrad
Ormanı’nda yetişen bir Anadolu karaçamının [Pinus nigra Arn. subsp. pallasiana
(Lamb.) Holmboe] yıllık su tüketimini ortaya koymaktır. Örnek ağaç 56 yaşında,
17 metre (m) yüksekliğinde olup göğüs yüksekliğindeki çapı 40 santimetre
(cm)’dir. Çalışma 1 Ocak 2016 ile 1 Ocak 2017 tarihleri arasını kapsamaktadır.
Çalışma süresi boyunca yağış 1083 milimetre (mm), en düşük sıcaklık -11˚C ve en
yüksek sıcaklık 32˚C olarak kaydedilmiştir. Ağacın su tüketimi ölçümleri
gövde/doku ısı dengesi yöntemi kullanılarak yapılmıştır. Sonuçlara göre, örnek
ağacın günlük ortalama su tüketimi 27,06 kilogram (kg) olup günlük tüketim
0,007 kg ile 71,54 kg arasında değişiklik göstermektedir. Bu ağacın yıllık
toplam su tüketimi 9851 kg’dır. Aylara göre bakıldığında ise en yüksek günlük
ortalama tüketim 59 kg ile Temmuz ayında, en düşük günlük ortalama tüketim ise
3,37 kg ile Ocak ayında gerçekleşmiştir. Elde edilen bu veriler ormanlık
havzaların yalnızca su kalitesi anlamında değil su üretimi anlamında da verimli
yönetilebilmesi için yol gösterici olarak alınabilir.

Keywords

Anadolu karaçamı, bitki özsuyu akış ölçümleri, gövde ısı dengesi, transpirasyon, su tüketimi

Annual water consumption of an Anatolian black pine in a sub-humid region

Abstract

DOI: 10.26650/ forestist.2018.344844

The primary aim of this study was to
investigate the annual water consumption of an individual Anatolian black pine
[Pinus nigra Arn. subsp. pallasiana (Lamb.) Holmboe] growing in Belgrad Forest,
İstanbul. The sample tree was 56 years old, measuring a height of 17 m and a
diameter at breast height of 40 cm. The study was conducted over a period of 1
year from January 1, 2016, to January 1, 2017. The minimum and maximum air
temperatures were −11°C and 32°C, respectively. The precipitation during this
period was recorded as 1,083 mm. Tree water consumption measurements were
carried out using the tissue heat balance method. Results showed that water
uptake of the tree varied between 0.007 and 71.54 kg day−1, while the average
daily and annual water consumptions of the tree were about 27.06 and 9,851 kg,
respectively. The daily water consumption varied between 59 kg in July and 3.37
kg in January. These values can be considered as guidance for an effective
management of forested watersheds in terms of both water quality and water
production.

Keywords

Anatolian black pine, sap flow, tissue heat balance, transpiration, water consumption

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