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当前位置: 首页 > 文章 > 黄土丘陵区人工造林对不同土壤类型理化特性的影响 水土保持研究 2011,18 (1) 42-47
Position: Home > Articles > Impact of Afforestation on Physical and Chemical Properties of Different Soil Types in Loess Plateau of China Research of Soil and Water Conservation 2011,18 (1) 42-47

黄土丘陵区人工造林对不同土壤类型理化特性的影响

作  者：
陈军;张红霞;钟文;李玉忠;王春季
单  位：
靖边县绿化中心;靖边县林业规划设计院;靖边县农业技术推广站
关键词：
人工造林;黄绵土;红黏土;风化岩沫土;黄土高原
摘  要：
传统的观点认为黄土高原地区除了黄绵土以外,其他两种土壤(红黏土和风化岩沫土)由于营养贫瘠不能维持林木生长发育,不宜进行人工造林。为了拓展黄土丘陵区适宜人工造林的土壤范围,1996-2005年,在陕西省延安市黄土丘陵区开展了土壤类型对人工造林影响的实验研究。结果表明,由于人工植被过度消耗土壤水分,黄绵土土壤地类大面积人工造林可能导致土壤水分短缺以及其它潜在的一系列风险。在红黏土和风化岩沫土土壤地类开展人工造林,单一树种的成活率与黄绵土接近、混交林成活率显著高于黄绵土,这两种土壤类型人工造林对土壤水分影响相对较小。因此,在水分条件适中的沟谷两岸,红黏土和风化岩沫土土壤地类具有开展人工造林的良好条件。
译  名：
Impact of Afforestation on Physical and Chemical Properties of Different Soil Types in Loess Plateau of China
作  者：
CHEN Jun1,ZHANG Hong-xia2,ZHONG Wen3,LI Yu-zhong1,WANG Chun-ji1(1.Foresty Programming College of Jingbian County,Jingbian,Shaanxi 718500,China;2.Agricultural Technology Popularizing Station of Jingbian County,Jingbian, Shaanxi 718500,China;3.Greening Centre of Jingbian County,Jingbian,Shaanxi 718500,China)
关键词：
afforestation;loess soil;red clay;bedrock-derived soil;Loess Plateau
摘  要：
Conventional afforestation in hilly area of Loess Plateau is only thought to be possible on loess soils because the local foresters consider the two other main soil types(red clay and bedrock-derived soils) too barren to support trees growth and development.In an attempt to determine whether these soils could also support afforestation,we planted trees on all three soil types in a hilly area of the Loess Plateau near Yan'an city from 1996 to 2005.Our results indicate that large-scale afforestation in loess soils could potentially increase the severity of soil water shortages,degrade the natural environment,and increase the risks of desertification and of serious economic losses because of over-consumption of soil moisture.However,survival rates on red clay and bedrock-derived soils were generally comparable to those on loess for individual species,and were superior to those on loess in mixed-species plantations,with less of an adverse impact on soil water.Hence,both red clay and bedrock-derived soils in low-lying areas with adequate soil moisture could potentially sustain afforestation in hilly area of Loess Plateau.

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