华北低丘山地不同退耕年限刺槐人工林土壤质量评价

应用生态学报

华北低丘山地不同退耕年限刺槐人工林土壤质量评价

赵娜¹,孟平^1,2**,张劲松^1,2,陆森^1,2,程志庆¹

(¹中国林业科学研究院林业研究所, 北京 100091; ^2国家林业局林木培育重点实验室, 北京 100091)

出版日期:2014-02-18 发布日期:2014-02-18

Soil quality assessment of Robinia psedudoacia plantations with various ages in the GrainforGreen Program in hilly area of North China.

ZHAO Na¹, MENG Ping^1,2, ZHANG Jin-song^1,2, LU Sen^1,2, CHENG Zhi-qing^1

(¹Research Institute of Forestry, Chinese Academy of Forestry, Beijing 100091, China; ²Key Laboratory of Tree Breeding and Cultivation, State Forestry Administration, Beijing 100091, China)

Online:2014-02-18 Published:2014-02-18

摘要/Abstract

摘要：

以华北低丘山地退耕还林区的耕地、农田撂荒地、退耕10年刺槐林和退耕43年刺槐林为研究对象,采用土壤质量综合指数探讨退耕措施对土壤质量的影响.结果表明: 随着退耕年限的增加,退耕刺槐人工林土壤养分的表层富集作用显著,且0～5 cm土层土壤改良效果增强;与耕地相比,退耕刺槐人工林的土壤物理性状得到改善,养分含量增加,土壤微生物生物量显著提高.不同土地利用类型的土壤质量综合指数为退耕43年刺槐林(0.542)>退耕10年刺槐林(0.536)>撂荒地(0.499)>耕地(0.498),说明退耕地人工造林改善了华北低丘山地退耕地区的土壤质量.

Abstract: Four land use types of cropland, abandoned cropland, 10-year-old and 43-year-old Robinia psedudoacia plantations in the GrainforGreen Program in hilly area of North China were studied to investigate the effects of returning cropland to forestland on soil quality by using integrated soil quality index. The results showed that the nutrients of topsoil increased significantly with increasing tree age, and soil properties in 0-5 cm soil layer improved. Compared with the cropland, soil physical and chemical properties of the two R. psedudoacia plantations improved, and the soil microbial biomass C and N increased significantly. The integrated soil quality index decreased in order of 43-year-old R. psedudoacia plantation (0.542)>10-year-old R. psedudoacia plantation (0.536)> the abandoned cropland (0.499)> the cropland (0.498), suggesting the soil quality was improved during the conversion from cropland to forestland.

赵娜1,孟平1,2**,张劲松1,2,陆森1,2,程志庆1. 华北低丘山地不同退耕年限刺槐人工林土壤质量评价[J]. 应用生态学报.

ZHAO Na1, MENG Ping1,2, ZHANG Jin-song1,2, LU Sen1,2, CHENG Zhi-qing1. Soil quality assessment of Robinia psedudoacia plantations with various ages in the GrainforGreen Program in hilly area of North China.[J]. Chinese Journal of Applied Ecology.