地域研究与开发
地域研究與開髮
지역연구여개발
Areal Research and Development
2006年
5期
117~121
,共null页
农业旱灾 脆弱性 诊断 评估 河北省邢台县
農業旱災 脆弱性 診斷 評估 河北省邢檯縣
농업한재 취약성 진단 평고 하북성형태현
agricultural drought disaster; vulnerability; diagnosis; assessment; Xingtai County of Hebei Province
农业旱灾脆弱性的存在是干旱成灾的主要原因。文章明晰了农业旱灾脆弱性的概念和表现形式,分析了导致和影响农业旱灾系统脆弱性的主要因素,提出了脆弱性诊断思路,建立了以生产过程和生活过程为基础的旱灾脆弱性评估指标体系与模型,并以河北省邢台县为例进行了评估。研究表明。降水波动是干旱致灾的自然压力;而人口食物需求导致的土地利用强度过高,农业需水总量持续严重超过水资源承载力是干旱致灾的根源,人均耕地资源限制、收入水平低和应对能力差强化了旱灾脆弱性,加剧了旱灾风险。
農業旱災脆弱性的存在是榦旱成災的主要原因。文章明晰瞭農業旱災脆弱性的概唸和錶現形式,分析瞭導緻和影響農業旱災繫統脆弱性的主要因素,提齣瞭脆弱性診斷思路,建立瞭以生產過程和生活過程為基礎的旱災脆弱性評估指標體繫與模型,併以河北省邢檯縣為例進行瞭評估。研究錶明。降水波動是榦旱緻災的自然壓力;而人口食物需求導緻的土地利用彊度過高,農業需水總量持續嚴重超過水資源承載力是榦旱緻災的根源,人均耕地資源限製、收入水平低和應對能力差彊化瞭旱災脆弱性,加劇瞭旱災風險。
농업한재취약성적존재시간한성재적주요원인。문장명석료농업한재취약성적개념화표현형식,분석료도치화영향농업한재계통취약성적주요인소,제출료취약성진단사로,건립료이생산과정화생활과정위기출적한재취약성평고지표체계여모형,병이하북성형태현위례진행료평고。연구표명。강수파동시간한치재적자연압력;이인구식물수구도치적토지이용강도과고,농업수수총량지속엄중초과수자원승재력시간한치재적근원,인균경지자원한제、수입수평저화응대능력차강화료한재취약성,가극료한재풍험。
The existence of vulnerability in agricultural drought system is the root that leading drought to disaster. This paper first reviewed the concept and its exhibition styles. Then analyzed the affecting factors to agricultural drought system's vulnerability and discussed the route of vulnerability diagnosis, established the index system and models for vulnerability assessment. Furthermore, taking Xingtai County of Hebei Province in temperate monsoon zone as an example, a case study was carried out. The result shows that rainfall fluctuation is the physical pressure to drought system. While the basic reason is the agricultural system's water resources demanding in intensive land - use condition has long been exceeded the physical environment' s supporting capacity under the pressure of increasing food need. The severe restricting of per capita crop - land, lower income level and poor coping capacity etc. have strongly exaggerated the farmers agricultural drought vulnerability and pricked up drought risk.