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菜园土壤无机氮解吸特性对硝态氮流失潜能的影响
引用本文:马月存,高旺盛,陈源泉,李向东,杨世琦,陈冬冬.菜园土壤无机氮解吸特性对硝态氮流失潜能的影响[J].生态学杂志,2007,26(1):94-100.
作者姓名:马月存  高旺盛  陈源泉  李向东  杨世琦  陈冬冬
作者单位:1.福建省农业科学院土壤肥料研究所, 福州 350013;;2.华南农业大学资源环境学院, 广州 510642;;3.福建农林大学资源环境学院, 福州 350001
摘    要:根据土壤氮素解吸模型,通过盆栽试验研究解吸特征参数对土壤渗漏水硝态氮浓度的影响.结果表明:土壤氮素可解吸量Q、土壤溶液氮初始浓度Cli和C1/比值与土壤渗漏水硝态氮浓度呈非线性关系,在较低氮解吸特征值时则呈线性关系,由此提出“双速率转折点”概念评价土壤硝态氮流失潜能.当耕层土壤氮素解吸特征值超过“双速率转折点”X0时,硝态氮浓度的增加速率将以非线性形式迅速提高,反之将稳定在较低水平.

关 键 词:禁牧  农村产业结构调整  武川县
文章编号:1000-4890(2007)01-0094-06
收稿时间:2006-5-10
修稿时间:2006-05-10

An investigation on the implementing effect of graze-prohibiting policy in Wuchuan County of Inner Mongolia
MA Yue-cun,GAO Wang-sheng,CHEN Yuan-quan,LI Xiang-dong,YANG Shi-qi,CHEN Dong-dong.An investigation on the implementing effect of graze-prohibiting policy in Wuchuan County of Inner Mongolia[J].Chinese Journal of Ecology,2007,26(1):94-100.
Authors:MA Yue-cun  GAO Wang-sheng  CHEN Yuan-quan  LI Xiang-dong  YANG Shi-qi  CHEN Dong-dong
Institution:1.Institute of Soil and Fertilizer, Fujian Academy of Agricultural Sciences, Fuzhou 350013, China;;2.College of Resources and Environmental Science, South China Agricultural University, ;Guangzhou 510642, China;;3.College of Resources and Environment Science, Fujian Agriculture and Forestry University, ;Fuzhou 350001, China
Abstract:Whether the policies of ecological protection are effective depends on how much economic benefit can be gained by the farmers from them. By using the method of household investigation, this paper analyzed the present situation of implementing graze-prohibiting policy in Wuchuan County of Inner Mongolia, the responses of the households in Wuchuan villages and towns to the policy, and the radical reasons resulting in the different responses. The results showed that most of the farmers realized the positive effects of graze-prohibiting policy in improving eco-environment, but their responses varied with the income after the implementation of the policy and the adjustment of rural industrial structure. Based on the successful case of Dongtucheng Town, it was considered that none but the timely adjustment of rural industrial structure could ensure the sustainability of graze-prohibiting policy.
Keywords:graze-prohibiting  adjustment of rural industrial structure  Wuchuan County of Inner Mongolia
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