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利用近期卫星遥感图片解译结果并结合实地调查,对四川麻疯树天然资源分布情况及生长特点进行了初步调查。结果表明:(1)四川麻疯树天然林资源总面积为34 194 hm2,主要沿金沙江、安宁河和雅砻江干流及其支流干热河谷呈窄带状水平分布;垂直分布范围为海拔400 m~1800 m。主要分布范围为海拔800 m~1400 m,其占四川天然林麻疯树总面积的84.47%。(2)分布方式以零星分布为主,夹杂有团条状分布、成片少,成片分布面积仅占总面积的22.25%。(3)通过对麻疯树天然林资源权属、地类、起源、面积、立地因子、株数、密度、树高、冠幅、生长状况、结实状况、生境状况、病虫害等情况的调查表明,四川麻疯树天然林资源具有雌雄花比例失调、单株产量差异大、病虫害严重、徒长枝多等一系列特点。(4)在宏观上,麻疯树在四川的适生区域为雅砻江流域的中下游及其支流安宁河流域的中下游及金沙江攀枝花、会理、会东段的部分支流的河谷地带。
Based on the interpretation results of recent satellite remote sensing images and field surveys, the distribution and growth characteristics of natural resources in Jatropha curcas in Sichuan Province were investigated. The results showed as follows: (1) The natural resources of Jatropha curcas in Sichuan Province were 34 194 hm 2 in total, with a narrow distribution along the Jinsha River, Anning River, Yalong River and its dry-hot valleys. The vertical distribution ranged from 400 m ~ 1800 m. The main distribution range is 800 m ~ 1400 m above sea level, accounting for 84.47% of the total area of Jatropha curcas in Sichuan natural forest. (2) The distribution pattern is mainly sporadic distribution, mixed with strip distribution, into a small piece, into a piece of the distribution area of only 22.25% of the total area. (3) According to the investigation of ownership, classification, origin, area, site factor, plant number, density, tree height, crown width, growth status, seed setting status, habitat status, pests and diseases of Jatropha curcas natural forest resources, Natural resources of Jatropha curcas in Sichuan province have a series of characteristics such as imbalanced male and female flowers, large differences in yield per plant, serious pests and diseases, and long branches. (4) Macroeconomically, the Jatropha curcas is suitable for the middle and lower reaches of the Yalong River basin and its middle and lower reaches of the Anning River basin and the valley of the Panzhihua, Huili and Huihui sections of the Jinsha River .