title: [Study the restoration technology of concentrated application-natural diffusion about amendments of acidified soil of hilly woodland].
abstract: Through concentrated application of lime, sewage sludge and lime + sewage sludge on the sloping top of the hilly woodlands, the restoration effects of the three soil amendments on the acidified soil of hilly woodland were studied. The results showed that: (1) Joint application of sewage sludge + lime can significantly (P < 0.05) decrease soil acidity, promote the rapid increase in soil organic matter and nitrogen content, increase soil cation exchange capacity, and effectively improve acidified soil. (2) Through natural diffusion mechanisms of surface and subsurface runoff, a large area of acidified soil of hilly woodlands can be restored by concentrated application of soil amendments on the sloping top of the hilly woodlands. (3) It is conducive to solve the pollution problems of the urban sewage sludge by using municipal sewage sludge to restore acidified soil, but only for the restoration of acidified soil of timber forest.
authors.affiliation: South China Botanical Garden, Chinese Academy of Sciences, Guangzhou 510650, China. fangxiong@scbg.ac.cn
authors.forename: Xiong
authors.initials: X
authors.lastname: Fang
authors.forename: Ju-Xiu
authors.initials: JX
authors.lastname: Liu
authors.forename: Guang-Cai
authors.initials: GC
authors.lastname: Yin
authors.forename: Liang
authors.initials: L
authors.lastname: Zhao
authors.forename: Shi-Zhong
authors.initials: SZ
authors.lastname: Liu
authors.forename: Guo-Wei
authors.initials: GW
authors.lastname: Chu
authors.forename: Yi-Yong
authors.initials: YY
authors.lastname: Li
mesh_terms: D015258:Acid Rain; D017610:Calcium Compounds / Q000737:chemistry*; D002681:China; D004784:Environmental Monitoring; D052918:Environmental Restoration and Remediation / Q000379:methods*; D006863:Hydrogen-Ion Concentration; D010087:Oxides / Q000737:chemistry*; D012722:Sewage / Q000737:chemistry*; D012989:Soil Pollutants / Q000032:analysis / Q000302:isolation & purification*; D014197:Trees / Q000254:growth & development
chemical_list: D015258:Acid Rain; D017610:Calcium Compounds; D010087:Oxides; D012722:Sewage; D012989:Soil Pollutants; C016538:lime