Journal of Food, Agriculture and Environment

Nutrient balance of Phyllestachys edulis forest under different management measures in South-eastern China

Author(s):

Guangle Liu, Shaohui Fan *, Wenhui Su, Manyi Du

Recieved Date: 2013-06-22, Accepted Date: 2013-09-23

Abstract:

We used the Phyllestachys edulis forest under different types of management and protection in Tianbaoyan Nature Reserve at Yongan city, Fujian province, Southeastern China, as research objective, to investigate the nutrient nutrient balance characteristics in P. edulis forest I (digging bamboo shoots + weeding), II (digging bamboo shoots + weeding + fertilizer) and III (digging shoots + weeding + fertilizer + irrigation). The results showed that the major nutrients (nitrogen (N), phosphorous (P), potassium (K), calcium (Ca) and magnesium (Mg)) of P. edulis forest showed obvious outflow state. The nutrient state of P. edulis forest were related to its special operations habits. Its long-term productivity maintenance requires more nutrient elements investment and more scientific management. The reasons caused these problems are from many respects. In P. edulis forest, the forest biomass outflow mediated through shoots digging and bamboos cutting accounted for 25% of the entire forest biomass every year. The loss of nutrient elements was 222.93-307.82 kg·hm^-2, while the litterfall return nutrient elements amount was 22.97-37.40 kg·hm^-2. The main nutrient balance was -80.48 to -199.96 kg·hm^-2. Among them, the fertilizer-supplemented nutrients for forest II and III were 107.68 and 106.11 kg·hm^-2, which was much higher than the amount of litterfall nutrient return, indicating that fertilization is the most effective approach to rapidly supplement soil nutrients. The outflow in forest II (-80.48 kg·hm^-2) was significantly lower than that in forest I (-199.96 kg·hm^-2) and III (-164.31 kg·hm^-2), which was related to the less shoot digging in forest II. According to the management purpose of P. edulis forest, appropriate management approach is conducive to the equilibrium of major nutrients in P. edulis forest.

Keywords:

Management and protection type, P. edulis forest, nutrient balance, South-eastern China

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Journal: Journal of Food, Agriculture and Environment
Year: 2013
Volume: 11
Issue: 3&4
Category: Environment
Pages: 2619-2624

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