冀西北3种植被恢复类型土壤理化性质差异及肥力评价  

Physicochemical Properties Difference and Fertility Evaluation of Soil within Three Types Vegetation Restoration in Northwest Hebei

作　　者：李洁 滑磊 任启文 孙杰肖 马香玲 LI Jie;HUA Lei;REN Qiwen;SUN Jiexiao;MA Xiangling(Hebei Provincial Academy of Water Resources,Shijiazhuang 050051,China;Hebei Heroic Memorial Park Management Office,Shijiazhuang 050051,China;Hebei Academy of Forestry and Grassland Science,Shijiazhuang 050061,China)

机构地区：[1]河北省水利科学研究院,河北石家庄050051 [2]河北省英烈纪念园管理处,河北石家庄050051 [3]河北省林业和草原科学研究院,河北石家庄050061

出　　处：《生态环境学报》2020年第8期1540-1546,共7页Ecology and Environmental Sciences

基　　金：河北省重点研发计划项目(18226815D);河北省水利科技项目(2017-04);河北省林业科学技术研究项目(1701484)。

摘　　要：森林植被恢复对土壤肥力的改善是森林可持续经营的重要条件。为研究冀西北3种森林植被恢复类型对土壤肥力的影响,以张家口市崇礼区清水河流域恢复年限40年的落叶松(Larix principis-rupprechtii)、油松(Pinus tabulaeformis)乔木林和虎榛子(Ostryopsis davidiana)灌木林土壤为研究对象,分层测定了3种植被类型的土壤物理性状和养分特征,采用土壤肥力指数评价法对3种植被恢复类型土壤肥力进行了综合评价。结果表明,(1)3种植被恢复类型中,落叶松林与虎榛子灌木林土壤容重明显低于油松林,土壤总孔隙度和毛管孔隙度大于油松林。(2)虎榛子灌木林的土壤水分自然储量明显大于油松林和落叶松林。最大持水量、田间持水量和毛管持水量均表现为落叶松林>虎榛子灌木林>油松林。(3)3种植被恢复类型中,落叶松林土壤有机质、全氮、碱解氮和全钾储量高,虎榛子灌木林有机质、全氮、速效钾储量高,油松林全磷、全钾、速效磷、速效钾储量高。(4)经土壤肥力指数综合评价,3种植被类型对土壤肥力的改善作用落叶松林>虎榛子灌木林>油松林。油松林土壤肥力与其他两种林分差距较大,主要由于其枯落物难于分解,上中层土壤(0-40 cm)有机质得不到及时补充。Improving soil fertility by forest vegetation restoration was an important condition for sustainable forest management.In order to study the effect of three types of forest vegetation restoration on soil fertility in Northwest Hebei Province.The soil of Larix principis-rupprechtii,Pinus tabulaeformis forests and Ostryopsis davidiana shrub with 40 years in Qingshuihe watershed,Chongli District,Zhangjiakou was studied.The soil physical properties and nutrient content of three vegetation types were measured by stratification,and the soil fertility of three vegetation restoration types was evaluated comprehensively by soil fertility index evaluation method.The results showed that:(1)Among the three types of vegetation restoration,soil bulk density of Larix principis-rupprechtii forest and Ostryopsis davidiana shrub is significantly lower than that of Pinus tabulaeformis forest,total soil porosity and capillary porosity are greater than that of Pinus tabulaeformis forest.(2)The natural reserves of soil moisture in Ostryopsis davidiana shrub are significantly higher than that in Larix principis-rupprechtii forest and Pinus tabulaeformis forest.The maximum water holding capacity,the field water holding capacity and the capillary water holding capacity all show as Larix principis-rupprechtii forest>Ostryopsis davidiana shrub>Pinus tabulaeformis forest.(3)Among the three types of vegetation restoration,the reserves of soil organic matter,total nitrogen,alkali-hydrolysable nitrogen and total potassium in Larix principis-rupprechtii forest are high,the reserves of organic matter,total nitrogen and available potassium in Ostryopsis davidiana shrub forest are high,and the reserves of total phosphorus,total potassium,available phosphorus and available potassium in Pinus tabulaeformis forest are high.And(4)according to the comprehensive evaluation of soil fertility index,the improvement effect of three vegetation types on soil fertility is in the order of Larix principis-rupprechtii forest>Ostryopsis davidiana shrub>Pinus tabul

关 键 词：落叶松 油松 虎榛子 植被恢复 理化性质 土壤肥力 

分 类 号：S718.5[农业科学—林学] X171.1[环境科学与工程—环境科学]