Biological Litterfall of Middle-aged Plantation of Masson Pine After Fertilization

ZHOU Yun chao 1,ZHANG Yun jie 2,CHEN Hong hui 3,LIANG Rui long 3

Journal of Nanjing Forestry University (Natural Sciences Edition) ›› 2002, Vol. 26 ›› Issue (04) : 35-38.

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Journal of Nanjing Forestry University (Natural Sciences Edition) ›› 2002, Vol. 26 ›› Issue (04) : 35-38. DOI: 10.3969/j.jssn.1000-2006.2002.04.009

Biological Litterfall of Middle-aged Plantation of Masson Pine After Fertilization

  • ZHOU Yun chao 1,ZHANG Yun jie 2,CHEN Hong hui 3,LIANG Rui long 3
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Abstract

Biological litterfall is a link of material fluxes and energy fluxes in forest ecosystem,which is important for forest fast growing.There was about 5 000 kg/hm 2 of biological litterfall in the Ⅰ 1 field of Masson pine stands every year,in which the percentage of the fallen leaves was the largest to 75%~89%,and branches the least.The amount of litterfall was significantly different in the different periods during one year(branches not involved):① more than 60% of litterfall came from fallen leaves from Oct to Feb(4 months);②flowers in the litterfall in the period of April to June were more than in other months of the year.Fertilization could significantly affect the amount of litterfall.N 2 P 2 K decreased the amount of leaves returned significantly while P 3,N 1P 1,N 2 obviously increased branches returned.The average N,P,K,Ca and Mg returned to soil from litterfall was 35.07,1.77,6.36,18.30 and 6.99 kg/hm 2 respectively .The amount of the elements from the different portions of litterfall was of the great difference.It was up to 80.8%~87.6% of the total amounts of elements from fallen leaves but only less than 20% from withered branches.

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ZHOU Yun chao 1,ZHANG Yun jie 2,CHEN Hong hui 3,LIANG Rui long 3. Biological Litterfall of Middle-aged Plantation of Masson Pine After Fertilization[J]. Journal of Nanjing Forestry University (Natural Sciences Edition). 2002, 26(04): 35-38 https://doi.org/10.3969/j.jssn.1000-2006.2002.04.009
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