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A transformation method of North China larch mixed forest dominated by water conservation function

A technology for water conservation and larch, applied in forestry, afforestation, agriculture, etc., can solve the problems of low survival rate, ineffective effect, and inability to increase the diversity of tree species, achieve high-efficiency ecological restoration, small investment, and speed up water conservation. The effect of functional recovery

Active Publication Date: 2018-12-25
BEIJING FORESTRY UNIVERSITY
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  • Application Information

AI Technical Summary

Problems solved by technology

This method makes the North China larch plantation still a pure forest, which cannot increase the diversity of tree species, and the effect after transformation is not obvious, the survival rate is low, and the protective effect is difficult to maintain

Method used

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  • A transformation method of North China larch mixed forest dominated by water conservation function
  • A transformation method of North China larch mixed forest dominated by water conservation function
  • A transformation method of North China larch mixed forest dominated by water conservation function

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Embodiment 1

[0059] Embodiment 1 A kind of North China larch plantation improvement method

[0060] A method for transforming North China larch artificial mixed forest, comprising the steps of:

[0061] First, investigate the North China larch plantation to be transformed, and evaluate the water conservation function of the plantation. Set up m sample plots of 20m×20m, use the “cross-type” division method to focus on the investigation of the average tree height, average diameter at breast height, stand age, stand biomass, and density of North China larch, and calculate the water conservation function evaluation index Y of the plantation (Y is an important indicator reflecting the function of water conservation):

[0062] Y=J FW ·X 1 +I 1 ·X 2 +I 2 ·X 3 +I 3 ·X 4 +F·X 5 +W·X 6 +p·X 7 (1)

[0063] Among them, J Fw =(-∑ F i＝1 Pi﹡lnPi)lnF (2)

[0064] I 1 =P 外 -P 内 -G (3)

[0065] I 2 =(0.85·R m -R o ) M (4)

[0066] I 3 = h k (5)

[0067] F=∑m i (6)

[0068] W=W...

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Abstract

The invention relates to a water conservation function dominated reconstruction method for a man-made mixed forest of Larix principis-rupprechtii. The method comprises the following steps: (1) carrying out an investigation on the man-made forest of Larix principis-rupprechtii to be reconstructed, and calculating a water conservation function evaluation number of the man-made forest; (2) carrying out selective cutting on low-yielding inferior forest trees, of which the water conservation function evaluation number is poor; (3) carrying out pit-shaped land preparation on cut empty land blocks; (4) selecting an appropriate tree species, and carrying out complementary planting on treated empty land blocks by using a seedling planting method; (5) carrying out fenced tending and managing on the man-made forest subjected to complementary planting. The man-made forest reconstruction method provided by the invention provides an economical, efficient and ecological reconstruction technology for the reconstruction of the existing man-made forests, the recovery of a water conservation function of the man-made forest of Larix principis-rupprechtii is accelerated, and the ecological recovery objects of small investment and high result are achieved.

Description

technical field [0001] The invention relates to a method for transforming an artificial mixed forest of larch in North China, in particular to a method for transforming an artificial mixed forest of larch in North China with water conservation function as the main factor. Background technique [0002] At present, most of the North China larch forests in my country are artificial forests. These artificial forests not only play an irreplaceable role in mountain water conservation, windbreak and sand fixation, and the formation and maintenance of forest ecosystems, but also purify the water quality in the upper reaches of rivers and lakes. , and become a green barrier to maintain the ecological safety of the river (lake, reservoir) bank. [0003] However, due to the extensive management or improper measures of larch plantation in North my country in the later stage of growth, the stand structure is single, the diversity of understory vegetation is lacking, single tree species ar...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A01G23/00
CPCA01G23/00Y02A40/22Y02P60/40
Inventor 余新晓刘自强贾国栋贾剑波孙佳美路伟伟赵娜娄源海李瀚之白艳婧侯沛轩何雅冰
Owner BEIJING FORESTRY UNIVERSITY