Öz

Bu çalışma Garhwal Himalaya’nın Dhanaulity bölgesindeki ılıman kuşak ormanlarındaki ölü örtü birikimi, ölü örtü ayrışması ve böylece ölü örtüden besin maddelerinin salımı miktarlarını belirlemek amacıyla yapılmıştır. Araştrıma sonuçları, ölü örtü miktarları en yüksekten en düşüğe doğru alt>orta>üst yükseltilerde olduğu ve herbir yükselti basamağında yaz>yağmurlu mevsim>kış sıralamasına göre oluştuğu tespit edilmiştir. Ayrışma sabiti (k) alt, üst ve orta yükseltilerde sırasıyla 0.511, 0.438 ve 0.256 şeklinde değişmiştir. Yükseltiye bağlı olmaksızın potasyum yaz>yağmurlu mevsim>kış (sırasıyla %0.92, 0.90 ve 0.84), fosfor potasyumun tersine kış>yağmurlu mevsim>yaz (%0.203, 0.108, 0.104) şeklinde bir değişim göstermiş, azot ise mevsimlere göre yağmurlu mevsim>kış>yaz (%1.13, 1.11 ve 1.01) bir seyir izlemiştir. Mevsimlere bağlı kalmaksızın bakıldığında ise potasyum yükselti arttıkça artış göstermiş, fosfor ve azot ise yükseltiye bağlı belirgin bir değişim göstermemiştir

Anahtar Kelimeler

• Himalay, Ölü örtü, Besin elementleri, NPK

Litter production, decomposition and nutrient release of woody tree species in Dhanaulti region of temperate forest in Gahwal Himalaya

Abstract

Abstract

The study has been carried out in Dhanaulity region of temperate forest of Garhwal Himalaya to underestnad litter production, their decodmpstion and concetraion of nutrients release by leaf litter at different altitudes. The results indicate that the litter production with altitude in each season reduced in order of Lower>middle>upper altitudes, while in each altitudes the seasonal llitter production reduced in order of summer>rainy>winter. The value of decomposition constant (k) was reduced as 0.0014, 0.0012 and 0.0007 at lower, upper, middle altitude respectively. The concentration of nutrients seasonally (irrespective altitude), potassium reduced from summar (0.92%), rainy (0.90%) and winter (0.84%) however, phosphorus shown reverse trend with potassium as summer (0.104%), rainy (0.108%) and winter (0.203%) where as nitrogen was highest in rainy (1.13%) followed by winter (1.11%) and summer (1.01%).  The nutrient concentration with altitude (irrespective season), potassium increased with increasing attitudes, whereas, phosphorus and nitrogen have not shown any trend with attitude.

Keywords

• Himalaya,Forest floor,Nutrient elements,NPK

Kaynakça

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