A method for controlling the density of low-efficiency artificial forests

Abstract

The invention relates to the technical field of forest management, in particular to a low-efficiency artificial-forest density control method. The method includes: performing initial investigation onselected target forest stand, determining area, average rainfall and average runoff depth of the target forest stand, selecting single standard wood and measuring leaf area index; calculating maximumallowed water withdrawal of the target forest stand; calculating transpiration water consumption of the single standard wood; according to the maximum allowed water withdrawal of the target forest wood and the transpiration water consumption of the single standard wood, calculation the maximum forest stand density of the target forest stand; according to the maximum forest stand density, performing intermediate cutting of thick forest or reinforcement planting of thin forest. Therefore, fitting density of the target forest stand with different dimensions can be acquired by only measuring the leaf area index, the forest stand density is controlled by assistance of intermediate cutting or reinforcement planting, an ecology protection forest system with uniform forest structure and function target is easy to form, the leaf area index is easy to acquire, and easiness in operation is achieved.

Description

technical field [0001] The invention relates to the technical field of forest management, in particular to a method for regulating and controlling the density of low-efficiency artificial forests. Background technique [0002] Planted forests are the main body of ecological construction in northern mountainous areas, and their good ecological benefits and rich forest resources are an important carrier to meet the needs of urban and rural human settlements and culture. In recent years, affected by human factors such as uneven source of seedlings, unreasonable initial planting density, inadequate management and tending, etc., as well as natural factors such as climate warming and drying, and soil barrenness, the ecosystem of plantation forests in northern mountainous areas has shown an imbalance in structure and stability. , tree growth decline, system function seriously degraded and other phenomena, resulting in the increase of unhealthy and sub-healthy forest area, the growt...

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a low-efficiency artificial forest density control method that is simple, easy to operate, strong in operability, low in field measurement work cost and based on the site moisture and vegetation bearing capacity, so as to solve the problem that the existing technology often ignores the water that limits the drought in the north. Key factors for forest growth in different densities in semi-arid areas and stand structure adjustment parameters such as stand size ratio selected by some technical research institutes have many limitations such as difficult to obtain in the field, poor operability and difficult to realize.

Images