天山中部锦鸡儿生物量分析及模型构建  

Biomass Analysis and Model Development of Caragana sinica in Central Tianshan Mountains

作　　者：朱雅丽 张景路 张绘芳 地力夏提·包尔汉 廉佳佳 ZHU Yali;ZHANG Jinglu;ZHANG Huifang;DILIXIATI·Baoerhan;LIAN Jiajia(Modern Forestry Research Institute of Xinjiang Academy of Forestry,Urumqi 830092,China)

机构地区：[1]新疆林业科学院现代林业研究所,乌鲁木齐830092

出　　处：《林业资源管理》2022年第5期129-135,共7页Forest Resources Management

基　　金：新疆维吾尔自治区公益性科研院所基本科研业务费专项资金(KY2021038,KY2021037);中央财政专项资金(新林规字〔2021〕476号)。

摘　　要：以天山中部地区分布的天然灌木锦鸡儿(Caragana sinica)为研究对象,在呼图壁分局选取样木40株并挖取土样。首先,对影响生物量的有关因子进行相关性分析;然后,以天然灌木锦鸡儿冠幅面积为自变量,地上生物量为因变量,采用一元线性、二次曲线、幂和指数等函数形式回归拟合地上生物量模型;最后对拟合结果进行对比分析。结果显示:天然灌木锦鸡儿地上生物量与株高、平均枝长、冠幅面积、土壤有机碳及水解氮呈极显著正相关,与平均基径、土壤有效磷呈正相关,与土壤速效钾无明显相关性;天然灌木锦鸡儿地上生物量模型以二次曲线模型最优,拟合精度达89.54%。Taking Caragana sinica,a natural shrub distributed in the central Tianshan Mountains,as the study object,and 40 sample trees were collected from Hutubi Branch and soil samples were collected.Firstly,the correlation analysis of factors affecting biomass was carried out.Then,the canopy area of natural Caragana was used as the independent variable,and the aboveground biomass was used as the dependent variable.The aboveground biological model was fitted by linear,quadratic,power and exponential regression;Finally,the fitting results were compared and analyzed.The results showed that the aboveground biomass of natural Caragana was positively correlated with plant height,average branch length,crown area,soil organic carbon and hydrolytic nitrogen,and positively correlated with average basal diameter and soil available phosphorus,but had no significant correlation with soil available potassium.The optimal aboveground biomass model was the conic curve model,with a fitting accuracy of 89.54%.

关 键 词：天山中部 锦鸡儿 冠幅面积 地上生物量 模型 

分 类 号：Q948[生物学—植物学] S718.556[农业科学—林学]