干旱区生态环境知识资源中心(Arid): 坝上地区不同年限退耕工程对土壤的保护作用

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	坝上地区不同年限退耕工程对土壤的保护作用
其他题名	Protective effect of cropland conversion with different years on soil in Bashang district,North China
	苑依笑 1; 王仁德 2; 常春平 1; 郭中领 1; 李庆 2
来源期刊	干旱区资源与环境
ISSN	1003-7578
出版年	2018
卷号	32 期号:9 页码:84-89
中文摘要	选择河北坝上地区康保县作为典型研究区,采用野外调查取样和室内实验分析手段,以邻近农田为对照区,分析退耕对土壤理化性质的影响,探讨不同年限退耕工程对土壤的保护作用。结果表明:退耕还林还草能够起到保护地表土壤免遭风蚀的作用,使退耕地的黏粉粒含量高于相邻农田,砂粒所占比重相对降低,有机质和氮等养分含量增加,抑制了土壤进一步粗化、沙化,对增加土壤肥力有积极作用。与农田相比,退耕地的土壤砾石含量偏低,可风蚀性颗粒含量偏高,土壤风蚀可蚀性较强。退耕年限关系到土壤理化性质的改善效果,退耕前期土壤理化性质变化较小,随着退耕年限的增加,土壤质地和结构得以改善,肥力明显提高。由此可知,长期坚持实施退耕还林还草工程对保护当地土壤环境具有重要作用,对改善区域生态环境和促进可持续发展具有重大意义。
英文摘要	Taking Kangbao county,in Bashang district as a typical area,by field sampling and comparing the differences in soil properties between farmland and previously farmed lands,the variation characteristics of soil physicochemical properties of converting farmland as well as protective effect of cropland conversion with different years on soil were studied. The results showed that,the Grain for Green Project played a critical role in preventing soil from wind erosion and desertification,and made the content of clay and silt higher than the farmland. The proportion of sand decreased and the content of nutrients such as organic matter and total nitrogen increased. All these protected the soil from further roughening,desertification and had a positive effect on increasing soil fertility. Compared with cropland,gravel content was lower and erodible particles content higher in abandoned lands,which caused enhancement of soil erodibility by wind. The study also demonstrated a direct link between restoration ages and improvement of soil properties. Soil properties changed little in early stages. Soil texture, structure and fertility were improved obviously with the time length of the converted land. So,the long - term enforcement of the Grain for Green project plays an important role in protecting the local soil environment,and is of great significance in improving the regional ecological environment and promoting sustainable development.
中文关键词	退耕还林还草 ; 理化性质 ; 退耕年限 ; 风蚀可蚀性 ; 河北坝上
英文关键词	Grain for Green Project soil property vegetation restoration years soil erodibility by wind Bashang district of Hebei province
语种	中文
国家	中国
收录类别	CSCD
WOS类目	AGRICULTURE MULTIDISCIPLINARY
WOS研究方向	Agriculture
CSCD记录号	CSCD:6318989
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/237724
作者单位	1.河北师范大学资源与环境科学学院, 河北省环境演变与生态建设省级重点实验室, 石家庄, 河北 050024, 中国; 2.河北省科学院地理科学研究所, 河北省地理信息开发应用工程技术研究中心, 石家庄, 河北 050011, 中国
推荐引用方式 GB/T 7714	苑依笑,王仁德,常春平,等. 坝上地区不同年限退耕工程对土壤的保护作用[J],2018,32(9):84-89.
APA	苑依笑,王仁德,常春平,郭中领,&李庆.(2018).坝上地区不同年限退耕工程对土壤的保护作用.干旱区资源与环境,32(9),84-89.
MLA	苑依笑,et al."坝上地区不同年限退耕工程对土壤的保护作用".干旱区资源与环境 32.9(2018):84-89.