title: [Characteristics of soil phosphorous loss under different ecological planting patterns in hilly red soil regions of southern Hunan Province, China].
abstract: Taking a large standard runoff plot on a red soil slope in Qiyang County, southern Hunan Province as a case, this paper studied the surface soil phosphorus loss characteristics in the hilly red soil regions of southern Hunan under eight ecological planting patterns. The phosphorus loss from wasteland (T1) was most serious, followed by that from natural sloped cropping patterns (T2 and T3), while the phosphorus loss amount from terrace cropping patterns (T4-T8) was the least, only occupying 9.9%, 37%, 0.7%, 2.3%, and 1.9% of T1, respectively. The ecological planting patterns directly affected the forms of surface-lost soil phosphorus, with the particulate phosphorus (PP) as the main lost form. Under the condition of rainstorm (daily rainfall > 50 mm), rainfall had lesser effects on the phosphorus loss among different planting patterns. However, the phosphorus loss increased with increasing rain intensity. The surface soil phosphorus loss mainly occurred from June to September. Both the rainfall and the rain intensity were the factors directly affected the time distribution of surface soil phosphorus loss in hilly red soil regions of southern Hunan.
authors.affiliation: Qiyang National Observation Station of Agri-ecololgy System, Institute of Agricultural Resources and Regional Planning, Chinese Academy of Agricultural Sciences, Qiyang 426182, Hunan, China. minmin88416@126.com
authors.forename: Min
authors.initials: M
authors.lastname: Yuan
authors.affiliation: Qiyang National Observation Station of Agri-ecololgy System, Institute of Agricultural Resources and Regional Planning, Chinese Academy of Agricultural Sciences, Qiyang 426182, Hunan, China.
authors.forename: Shi-Lin
authors.initials: SL
authors.lastname: Wen
authors.affiliation: Qiyang National Observation Station of Agri-ecololgy System, Institute of Agricultural Resources and Regional Planning, Chinese Academy of Agricultural Sciences, Qiyang 426182, Hunan, China.
authors.forename: Ming-Gang
authors.initials: MG
authors.lastname: Xu
authors.affiliation: Qiyang National Observation Station of Agri-ecololgy System, Institute of Agricultural Resources and Regional Planning, Chinese Academy of Agricultural Sciences, Qiyang 426182, Hunan, China.
authors.forename: Chun-Hua
authors.initials: CH
authors.lastname: Dong
authors.affiliation: Qiyang National Observation Station of Agri-ecololgy System, Institute of Agricultural Resources and Regional Planning, Chinese Academy of Agricultural Sciences, Qiyang 426182, Hunan, China.
authors.forename: Lin
authors.initials: L
authors.lastname: Qin
authors.affiliation: Qiyang National Observation Station of Agri-ecololgy System, Institute of Agricultural Resources and Regional Planning, Chinese Academy of Agricultural Sciences, Qiyang 426182, Hunan, China.
authors.forename: Lu
authors.initials: L
authors.lastname: Zhang
mesh_terms: D000383:Agriculture / Q000379:methods; D002681:China; D003247:Conservation of Natural Resources / Q000379:methods*; D018556:Crops, Agricultural / Q000254:growth & development*; D017753:Ecosystem; D019015:Geologic Sediments / Q000032:analysis; D010758:Phosphorus / Q000032:analysis*; D011891:Rain; D012987:Soil / Q000737:chemistry*; D014872:Water Movements
chemical_list: D012987:Soil; D010758:Phosphorus