林业科学
林業科學
임업과학
SCIENTIA SILVAE SINICAE
2014年
4期
47-54
,共8页
张瑜%贾黎明%郑聪慧%张西
張瑜%賈黎明%鄭聰慧%張西
장유%가려명%정총혜%장서
栓皮栎%天然次生林%地位指数表%立地质量评价
栓皮櫟%天然次生林%地位指數錶%立地質量評價
전피력%천연차생림%지위지수표%입지질량평개
Quercus variabilis%natural secondary stand%site index table%site quality evalucation
使用秦岭南北坡栓皮栎天然次生林的104块标准地和75株平均优势木解析木的498对树高-年龄数据,采用优势木树高生长与年龄关系的常用数学模型,编制秦岭地区栓皮栎天然次生林地位指数表,对该地区立地质量进行评价。运用 ForStat 2.0和 SPSS 18.0统计软件,选择12个数学模型拟合树高曲线,最终确定 lgH =-0.0146+0.7438lgA作为导向曲线,基准年龄为35年,指数级距为2 m,运用标准差调整法导出树高值为10~20 m共6条地位指数曲线,最终形成秦岭地区栓皮栎天然次生林地位指数表。导向曲线适合性检验、树高理论值与实际值的 X2检验、落点检验和树高生长量检验结果均表明:所编地位指数表精度较高,能够客观反映该地区栓皮栎天然次生林的立地质量。
使用秦嶺南北坡栓皮櫟天然次生林的104塊標準地和75株平均優勢木解析木的498對樹高-年齡數據,採用優勢木樹高生長與年齡關繫的常用數學模型,編製秦嶺地區栓皮櫟天然次生林地位指數錶,對該地區立地質量進行評價。運用 ForStat 2.0和 SPSS 18.0統計軟件,選擇12箇數學模型擬閤樹高麯線,最終確定 lgH =-0.0146+0.7438lgA作為導嚮麯線,基準年齡為35年,指數級距為2 m,運用標準差調整法導齣樹高值為10~20 m共6條地位指數麯線,最終形成秦嶺地區栓皮櫟天然次生林地位指數錶。導嚮麯線適閤性檢驗、樹高理論值與實際值的 X2檢驗、落點檢驗和樹高生長量檢驗結果均錶明:所編地位指數錶精度較高,能夠客觀反映該地區栓皮櫟天然次生林的立地質量。
사용진령남북파전피력천연차생림적104괴표준지화75주평균우세목해석목적498대수고-년령수거,채용우세목수고생장여년령관계적상용수학모형,편제진령지구전피력천연차생임지위지수표,대해지구입지질량진행평개。운용 ForStat 2.0화 SPSS 18.0통계연건,선택12개수학모형의합수고곡선,최종학정 lgH =-0.0146+0.7438lgA작위도향곡선,기준년령위35년,지수급거위2 m,운용표준차조정법도출수고치위10~20 m공6조지위지수곡선,최종형성진령지구전피력천연차생임지위지수표。도향곡선괄합성검험、수고이론치여실제치적 X2검험、낙점검험화수고생장량검험결과균표명:소편지위지수표정도교고,능구객관반영해지구전피력천연차생림적입지질량。
This paper aims to build a site index table through mathematical models established with the relationships of age and height of the dominant individuals,so as to evaluate the site quality of the whole Qinling region. Totally 104 sample plots in a Quercus variabilis natural secondary stand on southern and northern slope in Qinling Mountains were selected,and 498 pairs of height-age relations data of 75 analytic and average dominant individuals were collected. Statistical software of ForStat 2. 0 and SPSS 18. 0 were used. The height-age curve model,lgH = -0. 014 6 + 0. 743 8lgA,was selected out of 12 mathematical models,with the reference age of 35 years and exponential distance of 2 meters. Six site index curves (10 -20 m) of the Q. variabilis natural secondary stand were developed through the method of standard deviation adjustment. Eventually, the site index table for the Q. variabilis natural secondary stand was established. The table has high accuracy validated by the following four methods: correlation coefficient,X2 test,test of falling point and test of height growth increment. Thus,this method could be used on Q. variabilis natural secondary stand site evaluation in Qinling region.