国际沙棘研究与开发
國際沙棘研究與開髮
국제사극연구여개발
THE GLOBAL SEABUCKTHORN RESEARCH AND DEVELOPMENT
2012年
1期
19-26
,共8页
刘广全%孙克%何正祥%王鸿喆
劉廣全%孫剋%何正祥%王鴻喆
류엄전%손극%하정상%왕홍철
黄土高原中部%主要引进树种%生长过程
黃土高原中部%主要引進樹種%生長過程
황토고원중부%주요인진수충%생장과정
the Loess Plateau%Yan'an%main introduced tree species%growth process
本文对黄土高原中部引进的奥地利黑松、美国黄松、美人松、欧洲赤松、欧洲黑松等16个树种,林分个体树高平均生长量曲线分两种类型,以欧洲黑松为代表的第一种类型,苗期生长较快,随着年龄的增加,树高平均生长量趋于减慢且逐渐稳定,另外一种类型满足正常的"慢—快—缓慢—稳中有降"的生长规律。树高年平均生长量为0.369±0.097m,以美国黄松和欧洲黑松的最高(0.535±0.052m),以铁杉的最低(0.251±0.044m);树高连年生长量平均值为0.387±0.104m,欧洲黑松的最高,华山松的最低,前者是后者的2.63倍;16树种胸径年平均生长量在林木整个生长过程中变化幅度较小,以美国黄松的最高(1.595±0.192cm),青扦的最低(0.363±0.088cm),二者相差近4倍,就乡土树种白皮松、华山松、金钱松、青扦、铁杉、樟子松(0.6048cm)与外来引进树种(0.8488cm)相比,国外引进树种的生长量远远高于国内引进树种。16树种胸径连年生长量平均值为0.7056±0.2570cm,美国黄松的最大(1.249±0.350cm),青扦的最小(0.376±0.241cm),外国引进树种高出乡土树种50.0%以上。
本文對黃土高原中部引進的奧地利黑鬆、美國黃鬆、美人鬆、歐洲赤鬆、歐洲黑鬆等16箇樹種,林分箇體樹高平均生長量麯線分兩種類型,以歐洲黑鬆為代錶的第一種類型,苗期生長較快,隨著年齡的增加,樹高平均生長量趨于減慢且逐漸穩定,另外一種類型滿足正常的"慢—快—緩慢—穩中有降"的生長規律。樹高年平均生長量為0.369±0.097m,以美國黃鬆和歐洲黑鬆的最高(0.535±0.052m),以鐵杉的最低(0.251±0.044m);樹高連年生長量平均值為0.387±0.104m,歐洲黑鬆的最高,華山鬆的最低,前者是後者的2.63倍;16樹種胸徑年平均生長量在林木整箇生長過程中變化幅度較小,以美國黃鬆的最高(1.595±0.192cm),青扢的最低(0.363±0.088cm),二者相差近4倍,就鄉土樹種白皮鬆、華山鬆、金錢鬆、青扢、鐵杉、樟子鬆(0.6048cm)與外來引進樹種(0.8488cm)相比,國外引進樹種的生長量遠遠高于國內引進樹種。16樹種胸徑連年生長量平均值為0.7056±0.2570cm,美國黃鬆的最大(1.249±0.350cm),青扢的最小(0.376±0.241cm),外國引進樹種高齣鄉土樹種50.0%以上。
본문대황토고원중부인진적오지리흑송、미국황송、미인송、구주적송、구주흑송등16개수충,림분개체수고평균생장량곡선분량충류형,이구주흑송위대표적제일충류형,묘기생장교쾌,수착년령적증가,수고평균생장량추우감만차축점은정,령외일충류형만족정상적"만—쾌—완만—은중유강"적생장규률。수고년평균생장량위0.369±0.097m,이미국황송화구주흑송적최고(0.535±0.052m),이철삼적최저(0.251±0.044m);수고련년생장량평균치위0.387±0.104m,구주흑송적최고,화산송적최저,전자시후자적2.63배;16수충흉경년평균생장량재림목정개생장과정중변화폭도교소,이미국황송적최고(1.595±0.192cm),청천적최저(0.363±0.088cm),이자상차근4배,취향토수충백피송、화산송、금전송、청천、철삼、장자송(0.6048cm)여외래인진수충(0.8488cm)상비,국외인진수충적생장량원원고우국내인진수충。16수충흉경련년생장량평균치위0.7056±0.2570cm,미국황송적최대(1.249±0.350cm),청천적최소(0.376±0.241cm),외국인진수충고출향토수충50.0%이상。
The introduced 16 species Austrian black pine,ponderosa pine,pinyon,scotch pine,Austrian pine and so on in the middle part of the Loess Plateau,the process of the average individual height growth can be grouped into two categories,the first type represented by Austrian pine,it grows rapidly in the period of seedlings,along with the ages its growth slows down and gradually stabilizes.The other type follows the growth pattern of "show-rapid-slow-stably drop down".Its average annual growth in height is 0.369±0.097m,Ponderosa pine and Austrian pine are the highest(0.535±0.052m),and china hemlock is the lowest(0.251±0.044m).The mean current annual growth in height of the 6 species is 0.387±0.104 m,the black pine is the maximum,the huashan pine is the minimum,the former is 2.63 times of the later.The variation of the average annual growth at breast height of the above-mentioned sixteen species is not appreciable,the highest of the ponderosa pine is 1.595±0.192 cm,the lowest is Wilson spruce with variation of 0.363±0.088cm.The average annual growth at breast height of the native tree species as bunge pine,huashan pine,golden larch,Wilson spruce,china hemlock and mogol scotch pine is 0.6048 cm,compared with the introduced tree species with 0.8488cm,which growth surpass the native tree species.Among the 16 introduced tree species with the mean current annual growth of 0.7056±0.2590 cm,the ponderosa pine is the maximum(1.249±0.350cm),and Wilson spruce is the minimum(0.376±0.241cm),the introduced tree species surpass the native tree species more than 50.0%.