Slash pine artificial forest transformation technology

A technology for artificial forests and slash pine, applied in forestry, application, agriculture, etc., can solve the problems of stand growth decline, low turpentine output, and low pine resin output in pine forests, so as to achieve the effect of ensuring wood production and increasing wood production

Inactive Publication Date: 2017-10-20
RES INST OF SUBTROPICAL FORESTRY CHINESE ACAD OF FORESTRY
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Problems solved by technology

In recent years, the price of pine turpentine has been rising steadily, and the income from pine resin mining has far exceeded that of timber production. Driven by profits, contracted resin mining behaviors have appeared in slash pine plantations in many areas, regardless of forest species, and even the entire forest of young and middle-aged forests has been cut intensively. R

Method used

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Embodiment

[0050] 1. Selection criteria for slash pine stands

[0051] 1) Climate conditions: annual average temperature 15°C-24°C, daily average temperature 12°C-20°C, absolute low temperature >-17°C, annual precipitation >1000mm.

[0052] 2) Terrain and soil conditions: a) hills, rivers and lakes below 500m above sea level; b) downhill slopes of mountains below 500m above sea level and slopes less than 15°; c) plain areas with soil thickness above 60cm and groundwater level Below 0.5m.

[0053] 3) Stand conditions: stand canopy density not less than 0.6, site index not less than 14.

[0054] 2. Stand investigation

[0055]1) Stand vertical distribution pattern: Based on the dominant height of the forest stand, the forest stand is divided into 3 vertical layers. The upper layer of trees has a tree height ≥ 2 / 3 dominant height, and the middle layer has a tree height between 1 / 3-2 / 3 For trees between the dominant heights, the lower layer is trees with tree height ≤ 1 / 3 of the dominant ...

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Abstract

The invention discloses a slash pine artificial forest transformation technology. The slash pine artificial forest transformation technology comprises the steps of slash pine forest stand selection standard, a forest stand survey, a single tree survey, forest stand transformation, protection measures and the like. Based on the status quo of slash pine timber forests, forest stands with a good forest stand soil productivity basis are selected, a scientific and reasonable transformation technology is adopted, a single timber wood target is replaced with a multi-purpose forest stand cultivation mode which integrates seedling growing superior tree protection, big-diameter wood cultivation and high-rosin-yield single-plant management, through broad-leaved trees under a forest, the soil productivity is renewed and maintained, the nutrient requirement for timber wood and rosin production is guaranteed, and therefore requirements for different production targets and different interests parties are guaranteed.

Description

technical field [0001] The invention belongs to the technical field of plantation forest reconstruction, and in particular relates to a technology of slash pine plantation reconstruction. Background technique [0002] Slash pine ( Pinus elliottii Engelmann) is native to the southeastern United States. Because of its rapid growth and strong adaptability, it has been widely introduced to many tropical and subtropical countries and regions around the world, and has become an important timber and resin tree species in the introduced areas. Since 1973, my country has successively imported a large number of slash pine seeds from the United States, and carried out introduction, domestication and afforestation in subtropical provinces (regions) such as Guangdong, Guangxi, Hunan, Hubei, Jiangxi, Sichuan, Fujian, Anhui, Jiangsu, Zhejiang, Henan, and Hainan. promotion work. As of 2013, the afforestation area of ​​slash pine in my country has reached 1.34 million hectares, second only...

Claims

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Application Information

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IPC IPC(8): A01G23/00
CPCA01G23/00
Inventor 孙洪刚
Owner RES INST OF SUBTROPICAL FORESTRY CHINESE ACAD OF FORESTRY
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