首页|Characteristics of soil water consumption of typical shrubs (Caragana microphylla) and trees (Pinus sylvestris) in the Horqin Sandy Land area, China

Characteristics of soil water consumption of typical shrubs (Caragana microphylla) and trees (Pinus sylvestris) in the Horqin Sandy Land area, China

扫码查看
原文链接
  • NETL
  • NSTL
  • 万方数据
Reforestation is one of the most effective ways to reduce the impacts of desertification. Caragana microphylla Lam. and Pinus sylvestris var. mongolica Litrin have been widely used to stabilize shifting sands in the Horqin sandy land area since the 1980s. However, soil water depletion has been of major concern in C. microphylla and P. ongolica plantations and in many places current soil moisture cannot meet the demand of growing plants. To determine the water budget of C. microphylla and P. mongolica plantations, we studied the effect of plantations on soil moisture and assessed the evapotranspiration in plantations of both species. Investigations were conducted at a fenced plot at Wulanaodu (42°29′N, 119°30′E, 479 m a. s. 1), located at the western edge of the Horqin Sandy Land area in Inner Mongolia, northern China. Five year old C. microphylla and seven year old P. mongolica plants were selected from the plantations and transplanted to iron boxes (400cm× 200cm×120cm) which can drain extra water. Plant spacing of 1 m×1 m was applied to P. mongolica, and two plant spacings of 1 m×1m and 1 m×2m to C. microphylla. The transplanted plants grew for two years in the boxes. Soil moisture from soil surface to a depth 80 cm were measured at 20 cm intervals in boxes every 10 d (2004) or 3 d (2005) during the growing season with a TDR water meter. The evapotranspiration was estimated from a mathematical formula and the characteristics of soil water consumption and evapotranspiration of these two plantations were analyzed. The soil water of P. mongolica was more than that ofC. microphylla at the same 1 m×1 m spacing. The soil water of C. microphylla with the 1 m× 2 m spacing was more than that of the 1 m ×1 m spacing. The evapotranspiration ranged from high to low as follows: C. microphylla (1 m×1 m), C. microphylla (1 m×2m) and P. mongolica (1 m×1 m) during the growing seasons. The evapotranspiration of individual plants ranging from high to low was C. microphylla (1 m×2 m), C. microphylla (1 m×1 m), and P. mongolica (1 m×1m) during the growing season. C. microphylla grown for five year consumed more water than P. mongolica grown for seven years at the same spacing.

Horqin Sandy Land areaCaragana microphylla Lain.Pinus sylvestris var. mongolica Litrinsoil water storageevapotranspiriation

Alamusa、Deming JIANG

展开 >

Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang 110016, China

Research Institute of Forestry, Chinese Academy of Forestry, Beijing 100091, China

国家自然科学基金Science and Technology Foundation of Liaoning ProvinceNational Science and Technology Advancement Project of the Tenth Five Year Plan of China

30671723Ph.D. Startup. 2005100092005BA517A02-1

2009

10.1007/s11461-009-0047-x

中国高等学校学术文摘·林学
高等教育出版社

中国高等学校学术文摘·林学

ISSN：1673-3517
年,卷(期)：2009.4(3)
  • 7
  • 19