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[1]YANG Feng-wei,CHEN Li-hua,ZHU Qing-ke,et al.Analysis of Water Consumption of Main Afforestation Species in Western Shanxi of Loess Plateau[J].Research of Soil and Water Conservation,2008,15(01):41-45.

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Analysis of Water Consumption of Main Afforestation Species in Western Shanxi of Loess Plateau

Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume: 15 Number of periods: 2008 01 Page number: 41-45 Column: Public date: 2008-02-20

Title:: Analysis of Water Consumption of Main Afforestation Species in Western Shanxi of Loess Plateau

Author(s):: YANG Feng-wei^1,2, CHEN Li-hua¹, ZHU Qing-ke¹, BI Hua-xing¹; 1. College of Soil and Water Conservation in Beijing Forestry University, Key Laboratory of Soil and Water Conservation and Desertification Combating, Ministry of Education, Beijing 100083, China;
2. Department of Science and Technology of State Forestry Administration, Beijing 100714, China

Keywords:: main afforestation species; water consumption; water balance; soil water; Loess area

CLC:: S715

DOI:: -

Abstract:: In order to provide the scientific basis and practical instruction for the vegetation reconstruction and recovery in Loess Plateau, this paper measured and calculated water consumption of potted mature Pinus tabulaeformis, Robinia pseudoacacia, Malus pumila 1 and Malus pumila 2 separately during the growing season (from Apr.to Oct.), which were the main afforestation species in western Shanxi of Loess Plateau, based on the theory of prevention of water transport in horizontal direction.Besides, according to the data of soil water dynamic and the range of available moisture of potted mature trees, it analyzed the relationship between water supply and consumption and the soil moisture availability and deficit state.Several conclusions are listed as follows: ① In the deficit water year (2002), during the growing season the precipitation was 430.7 mm and the water consumption of potted trees was from 430 mm to 470 mm.More water consumption and less available water supply occurred, showing a serious water deficiency.In the abundant water year (2003), during the growing season the precipitation was 870.2 mm and the water consumption of potted trees was from 450 mm to 510 mm.Due to uneven distribution of rainfall, the water budget lost balance a bit in May and Oct.② The curves of soil water content of different species have similar change trends in annual but different in same month.Those of same species in different test plots have different change trends in same month either.③ Non-available soil water content of Pinus tabulaeformis, Robinia pseudoacacia, Malus pumila 1 and Malus pumila 2 is less than 8.0%, 8.4%, 9.4% and 10.9% respectively, which indicates that Pinus tabulaeformis use water more efficiently than others.In the deficit water year (2002), for several months, soil water content of potted trees is lower than its non-available soil water content, which could influence trees healthy growing.After supplements of precipitation of winter in the year and spring in the next year, soil water contents are higher than the lower limit of soil readily available moisture content.

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