Water Consumption Characteristics of Black Locust and Pitch Pine Plantation in Western Shanxi

YU Bao; WANG Bai-tian

This research analyzed the data of forest stand, sample trees and meteorological condition for plantation of Robinia pseudoacacia and Pinus tabulaeformis in Fangshan County and Ji County of Shanxi Province, to investigate the water-consumption. The results showed: (1) The water-consuming quantity of plantation increases with increasing forest age. The water-consumption will exceed the precipitation when the stand reaches a certain age. It is 15 years for the plantation of sunny slope Robinia pseudoacacia in Fangshan County; 5 years for the half-sunny slope Robinia pseudoacacia plantation and 23 years for the plantation of half-sunny slope Pinus tabulaeformis in Ji County. (2) Under the current precipitation condition, the water-consumption can't reach its required level, there is insufficient water stress. The order of water-consumption quantity in growing season from high to low is Jul, Jun, Aug, May, Sep and Oct. The precipitation condition limits the plantation's demand on water and its rational distribution during growing season. Therefore, it is necessary to control or regulate the stand density in different growth stages with a consideration of the management objectives and the precipitation input.

1. State Academy of Forestry Administration, Beijing 102600, China

2. College of Soil and Water Conservation, Beijing Forestry University, Beijing 100083, China

Received Date: 2010-05-24

Abstract: This research analyzed the data of forest stand, sample trees and meteorological condition for plantation of Robinia pseudoacacia and Pinus tabulaeformis in Fangshan County and Ji County of Shanxi Province, to investigate the water-consumption. The results showed: (1) The water-consuming quantity of plantation increases with increasing forest age. The water-consumption will exceed the precipitation when the stand reaches a certain age. It is 15 years for the plantation of sunny slope Robinia pseudoacacia in Fangshan County; 5 years for the half-sunny slope Robinia pseudoacacia plantation and 23 years for the plantation of half-sunny slope Pinus tabulaeformis in Ji County. (2) Under the current precipitation condition, the water-consumption can't reach its required level, there is insufficient water stress. The order of water-consumption quantity in growing season from high to low is Jul, Jun, Aug, May, Sep and Oct. The precipitation condition limits the plantation's demand on water and its rational distribution during growing season. Therefore, it is necessary to control or regulate the stand density in different growth stages with a consideration of the management objectives and the precipitation input.

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Reference (18)

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Water Consumption Characteristics of Black Locust and Pitch Pine Plantation in Western Shanxi

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