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A method to promote the regeneration of degenerated Populus euphratica population in extremely arid regions

A technology of Populus euphratica in arid areas, applied in the field of restoration and reconstruction of desert riparian forest ecosystems, can solve the problems of no vegetation coverage, inability to germinate populus euphratica seeds and provide habitat for root tillers, and achieve the effect of promoting reproduction and regeneration and improving the regeneration habitat

Active Publication Date: 2016-05-11
XINJIANG INST OF ECOLOGY & GEOGRAPHY CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, under the effects of differential weathering and Populus euphratica soil consolidation and sand control, the existing populations of Populus euphratica are mostly located at relatively high terrain, and most of the waterlogged areas are located on barren land formed by long-term wind erosion, and these areas are far away from the population of Populus euphratica , basically no vegetation coverage, hard soil, rapid evaporation after water accumulation, unable to provide habitat for Populus euphratica seed germination and root tillering

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] Select the Populus euphratica population 100m away from the river channel in the lower reaches of the Tarim River, and the underground water table is about 4m deep. The terrain between the two Populus euphratica populations is lightly rehabilitated according to the terrain, and the artificial construction area is 30-50m 2 There are 4-5 water-collecting and water-logging areas of different sizes, and after the completion of the community and in July of that year, the accumulated water and river water in the low-lying areas of the river are pumped to replenish water for the water-collecting areas;

[0023] Renovation and construction of water collection area:

[0024] In the late May of spring, after the end of the windy season and before the rainy season, two Populus euphratica populations located about 100m away from the river course in the lower reaches of the Tarim River were selected. The forest is the main part, the young forest is almost gone, and the two areas can...

Embodiment 2

[0028] Select a population of Populus euphratica that is 200-300m away from the river channel in the lower reaches of the Tarim River, and the buried depth of the groundwater level is about 5-6m. Slightly remediate the terrain between the two populations of Populus euphratica according to the terrain, and artificially construct an area of ​​30-100m respectively. 2 There are 5-6 water-collecting and water-logging areas ranging from 5 to 6, and the river water and well water are pumped out to replenish the water-collecting areas twice in the first year and July of the second year after the completion of the area;

[0029] Renovation and Construction of Water Gathering Area

[0030] In mid-to-late May, after the windy season in the arid region and before the rainy season, two Populus euphratica populations at a distance of about 200-300m from the river course in the lower reaches of the Tarim River were selected. It is basically invisible, and the two areas cannot realize the flo...

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Abstract

The invention relates to a method for facilitating regeneration of a degraded populus euphratica population in an extremely arid region, in particular to a method for regenerating the degraded populus euphratica population in a desert riparian forest in the extreme arid region. According to the method, an artificial catchment and ponding area is created through manual fine adjustment of the forest terrain of the populus euphratica population according to the breeding regeneration opportunity and rule of populus euphratica under the consideration of the characteristics that runoff yield under excess infiltration and water accumulation can be realized through highly-centralized precipitation events in the extremely arid region and that the populus euphratica population regeneration environment can be locally improved. A forest wet island is formed by using precipitation, and seed traps and seed enriched ponds are formed by properly replenishing water to cells by means of ecological water and underground water at the seed rain period of the populus euphratica, so that the forest wet-island effect is enhanced, the forest upper-layer soil moisture condition and population regeneration environment are improved, the regeneration probability of the degraded populus euphratica population is increased, and the regeneration of the populus euphratica population is facilitated.

Description

technical field [0001] The invention relates to a technology for restoration and reconstruction of a degraded desert riparian forest ecosystem in an extreme arid region, in particular to a method and a measure for regenerating populations of Populus euphratica in a degraded desert riparian forest in an extremely arid region. Background technique [0002] Arid and semi-arid areas cover 40% of the world's land area. Low rainfall, high evaporation and weak soil development have created a fragile and easily disturbed ecosystem with low vegetation coverage in arid and semi-arid areas. The desert riparian forest ecosystem composed of Populus euphratica as the constructing species in Central Asia is a unique and important part of the desert ecosystem in arid and semi-arid regions, providing most of the primary productivity in the desert ecosystem in this region. Due to the characteristics of easy disturbance, instability and high vulnerability, coupled with unreasonable human devel...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A01G23/00
CPCA01G7/06A01G17/005A01G23/00Y02A40/22Y02P60/40
Inventor 朱成刚陈亚宁李卫红陈亚鹏
Owner XINJIANG INST OF ECOLOGY & GEOGRAPHY CHINESE ACAD OF SCI