四川林业科技
四川林業科技
사천임업과기
JOURNAL OF SICHUAN FORESTRY SCIENCE AND TECHNOLOGY
2011年
5期
14-19
,共6页
邓铭瑞%康峰峰%赵秀海%马钦彦
鄧銘瑞%康峰峰%趙秀海%馬欽彥
산명서%강봉봉%조수해%마흠언
油松%树干液流速率%热扩散%非生长季
油鬆%樹榦液流速率%熱擴散%非生長季
유송%수간액류속솔%열확산%비생장계
Pinus tabulaeformis%Sap flow rate%Thermal diffusion%Non-growing season
2009年9月到2010年3月,在山西沁源县灵空山林场建设观测塔,用TDP探针对塔周围的不同胸径的ll棵油松林木在非生长季的树干液流速率及环境因子进行连续监测,研究油松林木树干液流变化规律。结果表明:非生长季的油松树干液流并没有停滞,正午的峰值逐渐消失,液流主要在夜间进行,最大值为16.11cm·h^-1,最小值为5.109×10^-5cm·h^-1,平均值为3.29cm·h^-1。在属于生长季末期的10月,不时有和生长季相同的单峰曲线出现,11月下旬后,白天和夜间的树干液流并无明显差异,趋于平稳。阴天则无峰或多峰。影响油松树干液流的环境因子主要有光合有效辐射、空气温度和相对湿度,三者都与液流速率既有显著正相关关系,又有显著负相关关系。土壤湿度与油松树干液流速率呈正相关关系。与太岳山生态站2005年所做的油松林木夏季的树干液流速率研究成果相结合,可以比较完整地反映油松林木树干液流速率全年的变化规律。
2009年9月到2010年3月,在山西沁源縣靈空山林場建設觀測塔,用TDP探針對塔週圍的不同胸徑的ll棵油鬆林木在非生長季的樹榦液流速率及環境因子進行連續鑑測,研究油鬆林木樹榦液流變化規律。結果錶明:非生長季的油鬆樹榦液流併沒有停滯,正午的峰值逐漸消失,液流主要在夜間進行,最大值為16.11cm·h^-1,最小值為5.109×10^-5cm·h^-1,平均值為3.29cm·h^-1。在屬于生長季末期的10月,不時有和生長季相同的單峰麯線齣現,11月下旬後,白天和夜間的樹榦液流併無明顯差異,趨于平穩。陰天則無峰或多峰。影響油鬆樹榦液流的環境因子主要有光閤有效輻射、空氣溫度和相對濕度,三者都與液流速率既有顯著正相關關繫,又有顯著負相關關繫。土壤濕度與油鬆樹榦液流速率呈正相關關繫。與太嶽山生態站2005年所做的油鬆林木夏季的樹榦液流速率研究成果相結閤,可以比較完整地反映油鬆林木樹榦液流速率全年的變化規律。
2009년9월도2010년3월,재산서심원현령공산림장건설관측탑,용TDP탐침대탑주위적불동흉경적ll과유송림목재비생장계적수간액류속솔급배경인자진행련속감측,연구유송림목수간액류변화규률。결과표명:비생장계적유송수간액류병몰유정체,정오적봉치축점소실,액류주요재야간진행,최대치위16.11cm·h^-1,최소치위5.109×10^-5cm·h^-1,평균치위3.29cm·h^-1。재속우생장계말기적10월,불시유화생장계상동적단봉곡선출현,11월하순후,백천화야간적수간액류병무명현차이,추우평은。음천칙무봉혹다봉。영향유송수간액류적배경인자주요유광합유효복사、공기온도화상대습도,삼자도여액류속솔기유현저정상관관계,우유현저부상관관계。토양습도여유송수간액류속솔정정상관관계。여태악산생태참2005년소주적유송림목하계적수간액류속솔연구성과상결합,가이비교완정지반영유송림목수간액류속솔전년적변화규률。
During the period of Sept. 17,2009 to March 30,2010,TDP probes were used to conduct longterm monitoring survey of the sap flow rates of 11 Pinus tabulaeformis around the tower in the forestry farm in the Lingkong Mountain in Shanxi province. The results showed that the sap flow of Pinus tabulaeformis did not stall in non-growing seasons. The peak at noon gradually disappeared and the flows mainly showed at night with the maximum of 16. 11cm·h^-1 ,the minimum of 5. 109 × 10^-5 cm·h^-1,and an average of 3.29 cm·h^-1. During the late growing season in October the sap flow diurnal change curve was a single peak, while after late November the change of day and night was small, displaying an even tendency. The main factors influencing the sap flow included photosynthetic active radiation, air temperature and relative humidity, and both significant positive and negative correlation were found between the three factors and the sap flow rate. Positive correlation showed between soil moisture and the rate in a long term.