水土保持学报2012，Vol.26Issue(1)：53-57,5.
石灰岩瘠薄山地不同密度侧柏林保土效益
Soil Conservation Benefits of Different Densities of Orientalis in Shandong Limestone Barren Mountain
摘要
Abstract
In order to explore the soil conservation benefits of different densities of orientalis in Shandong limestone barren mountain,the soil conservation functions of 5 kinds of densities of orientalis are analysised in field measurement and laboratory.The results showed：（1）In the five orientalis forests of different density,the forest with the maximum planting density had the greatest amount of litter accumulation,however,the forest with the minimum planting density had the least amount of litter accumulation,understoryed shrubs and grass vegetation cover and biomass multiply with the decreased planting density,litter biomass,biomass of shrubs and herbaceous biomass with the density of 1 667 lines/hm^2 orientalis were the most followed by 2 500 lines/hm^2,1 111 lines/hm^2,5 000 lines/hm^2 and 833 lines/hm^2 at last.The decomposition of litter had improved soil physical properties,reduced soil bulk density,increased soil porosity,and in particular urged the increase of non-capillary porosity,and promote water infiltration.（2）Meanwhile,it was proved that the 1 667 lines/hm^2 stand controlled the biggest soil erosion amount of 61.466 t/hm^2,followed by stand of 2 500 lines/hm^2,1 111 lines/hm^2 with the amount of 61.092 t/hm^2 and 57.712 t/hm^2.The 5 000 lines/hm^2 and 833 lines/hm^2 stand controlled the smaller amount of 56.664,55.2 t/hm^2.（3）From the variance analysis of indexes,such as the canopy density,total soil porosity,soil non-capillary porosity,amount of litter layer,soil infiltration rate,shrub grass biomass of understory herbs,controlled amount of soil erosion,there were significant differences between different stands.The results showed that the soil conservation benefits of five different density types decreased in the order of 1 667 lines/hm^2,2 500 lines/hm^2,1 111 lines/hm^2,833 lines/hm^2,5 000 lines/hm^2.关键词
石灰岩瘠薄山地/侧柏林/不同密度类型/土壤侵蚀量/保土效益Key words
limestone barren mountain/orientalis/different densities types/amount of soil erosion/soil conservation benefits分类
农业科技引用本文复制引用
李星辰,杨吉华,胡建朋,于连军,马胜国..石灰岩瘠薄山地不同密度侧柏林保土效益[J].水土保持学报,2012,26(1):53-57,5.基金项目
世界银行贷款山东生态造林项目“干旱瘠薄山地造林树种及造林模型选择研究” （）
