林业资源管理
林業資源管理
임업자원관리
FORESTRY RESOURCE MANAGEMENT
2015年
4期
84-91
,共8页
物元模型%偏相关分析%青海%土壤养分评价
物元模型%偏相關分析%青海%土壤養分評價
물원모형%편상관분석%청해%토양양분평개
element-matter analysis%partial correlation%Qinghai%soil nutrients evaluation
为客观地评价青海省林地土壤养分，选择有机质、全氮、全磷、全钾、速效氮、速效磷与速效钾为评价指标，通过野外调查采样和室内分析测量获得土壤养分数据，将偏相关法与物元分析结合构建模型，对青海省72个样地开展林地土壤养分评价。结果表明，青海省林地整体土壤养分状况良好，等级分布主要集中在三级水平以上；单项评价指标除速效磷含量极贫乏，其余指标均含量丰富；各地区中西宁市养分状况最好，海西最差，其余地区较好；海西地区有机质与氮素等级低，导致地区整体养分差，表明有机质与氮素是影响整体土壤养分的主要因素。
為客觀地評價青海省林地土壤養分，選擇有機質、全氮、全燐、全鉀、速效氮、速效燐與速效鉀為評價指標，通過野外調查採樣和室內分析測量穫得土壤養分數據，將偏相關法與物元分析結閤構建模型，對青海省72箇樣地開展林地土壤養分評價。結果錶明，青海省林地整體土壤養分狀況良好，等級分佈主要集中在三級水平以上；單項評價指標除速效燐含量極貧乏，其餘指標均含量豐富；各地區中西寧市養分狀況最好，海西最差，其餘地區較好；海西地區有機質與氮素等級低，導緻地區整體養分差，錶明有機質與氮素是影響整體土壤養分的主要因素。
위객관지평개청해성임지토양양분，선택유궤질、전담、전린、전갑、속효담、속효린여속효갑위평개지표，통과야외조사채양화실내분석측량획득토양양분수거，장편상관법여물원분석결합구건모형，대청해성72개양지개전임지토양양분평개。결과표명，청해성임지정체토양양분상황량호，등급분포주요집중재삼급수평이상；단항평개지표제속효린함량겁빈핍，기여지표균함량봉부；각지구중서저시양분상황최호，해서최차，기여지구교호；해서지구유궤질여담소등급저，도치지구정체양분차，표명유궤질여담소시영향정체토양양분적주요인소。
Soil organic matter,total nitrogen,total phosphorus,total potassium,available nitrogen,available phosphorus,available potassium were chosen as the evaluation indexes,and the soil nutrients data ob-tained by means of field investigation,sampling and laboratory analysis.Based on the data,the forest soil nutrients evaluation for 72 samples in Qinghai province was carried out by building the model combined with partial correlation method and element-matter analysis.The results indicated that the situation of the forest soil nutrients in Qinghai province was in good condition,and the level distribution mainly concen-trated above 3 rd level.In addition,the available phosphorus content was so poor among the seven indexes, the contents of other indexes were all abundant.The situation of soil nutrients in Xining and Haixi was the best and the worst respectively,and other districts were better.The lower level of organic matter and nitro-gen led to worst soil nutrient condition in Haixi,which manifested what the organic matter and nitrogen were the mainly influencing factors for the whole soil nutrients.
