文献类型：期刊文献

中文题名：高寒沙地不同植被恢复类型土壤肥力质量差异及评价

英文题名：Difference and Comprehensive Evaluation on Soil Fertility Quality of Different Vegetation Restoration Types in Alpine Sandy Land

作者：李清雪[1] 贾志清[1,2]

第一作者：李清雪

机构：[1]中国林业科学研究院荒漠化研究所;[2]青海共和荒漠生态系统定位观测研究站

年份：2015

卷号：0

期号：5

起止页码：1145-1154

中文期刊名：土壤通报

外文期刊名：Chinese Journal of Soil Science

收录：CSTPCD;;北大核心:【北大核心2014】；CSCD:【CSCD2015_2016】；

基金："十二五"国家科技计划课题(2012BAD16B0102);林业公益性行业科研专项经费项目(201204203)资助

语种：中文

中文关键词：高寒沙地;植被恢复;土壤肥力质量;综合评价

外文关键词：Alpine sandy land;;Vegetation restoration;;Soil fertility quality;;Comprehensive evaluation

分类号：S158

摘要：青海共和盆地是全国土地沙漠化危害较严重的区域之一,在沙漠化土地上进行植被恢复是控制该区沙漠化和改善区域环境的一个有效措施。为研究高寒沙地不同方式植被恢复后土壤肥力质量的差异,以自然恢复的赖草草地(Leymus secalinus)、人工恢复的沙柳林(Salix psammophila)、人工恢复的柽柳林(Tamatix chinensis)、人工恢复的乌柳林(Salix cheilophila)和人工恢复的乌柳小叶杨(Populus simonii)混交林为研究对象,测定了5种植被恢复类型0~50 cm深度土壤的物理性状、持水能力和养分特征,通过主成分分析和相关分析方法选取具有代表性的指标计算土壤质量指数,对5种植被类型的土壤肥力质量进行综合评价。结果表明:5种植被类型的土壤特性均表现出显著地"表聚性",即表层土壤肥力质量优于深层土壤;不同植被类型之间各土壤指标具有显著差异性,土壤质量指数计算结果表明,赖草草地(1.55)和沙柳林(1.50)土壤肥力质量最好,柽柳林(1.09)和乌柳林(0.93)次之,乌柳小叶杨混交林(0.76)土壤肥力质量最差。
Gonghe Basin of Qinghai Province was one of the regions seriously affected by desertification in China.Vegetation restoration was an effective way to control desertification and improve regional environment. This study was conducted to research the difference of soil fertility quality between different vegetation types after vegetation restoration. Five vegetation types in lowland between sand dunes were selected as study objectives. Soil physical properties, water holding capacity and nutrient characteristics were determined. The difference of soil indicators between vegetation types were analyzed, and soil fertility quality of five vegetation types was comprehensively evaluated by the soil quality index(SQI). Results showed that the water- holding capacity and nutrient content in surface soil were higher than those in deeper soil layers of different vegetation types. Soil properties were significantly different between five different vegetation types. The soil quality index, which was obtained based on the minimum water holding capacity, soil organic matter, total N and total P, showed that the Leymus secalinus grassland and Salix psammophila plantation had the highest soil fertility quality, followed by Tamatix chinensis plantation, Salix cheilophila plantation, and then Populus simoniiand Salix cheilophilamixed plantation.