Characteristics Study of Nitrogen and Phosphorus Runoff Loss in Different Bamboo Forests

Abstract

Abstract: Three typical types of bamboo forests with Phyllostachys sulphurea,Neosinocalamus affinis(Rendle)Keng f and Fargesia fractiflexa Yi in West Mountain of Kunming were used to study nitrogen and phosphorus loss of surface soil in artificial rain-runoff simulator.The results showed that the amount of runoff and sediment followed the order as Neosinocalamus affinis(Rendle)Keng f > Phyllostachys sulphurea> Fargesia fractiflexa Yi under the same rainfall condition.The main form of nitrogen and phosphorus loss were suspended particulate nitrogen(PN)and suspended particulate phosphorus(PP)in runoff water.Nitrogen loss occurred mainly in runoff water and phosphorus loss in sediment in the whole rainfall process.The rate of nitrogen and phosphorus loss followed the order as Neosinocalamus affinis(Rendle)Keng f > Phyllostachys sulphurea> Fargesia fractiflexa Yi from surface soil.The highest water conservation fuction was Fargesia fractiflexa Yi.

Key words: bamboo forests, simulation rainfall, runoff, nitrogen and phosphorus loss

CLC Number:

S714.5

CHEN Xiaobing, WANG Keqin. Characteristics Study of Nitrogen and Phosphorus Runoff Loss in Different Bamboo Forests[J]. FOREST RESOURCES WANAGEMENT, 2012, 0(6): 105-111.

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