CN103461065A - Low and wet bottomland afforestation method - Google Patents
Low and wet bottomland afforestation method Download PDFInfo
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- CN103461065A CN103461065A CN201210189205XA CN201210189205A CN103461065A CN 103461065 A CN103461065 A CN 103461065A CN 201210189205X A CN201210189205X A CN 201210189205XA CN 201210189205 A CN201210189205 A CN 201210189205A CN 103461065 A CN103461065 A CN 103461065A
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A40/00—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production
- Y02A40/10—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production in agriculture
- Y02A40/22—Improving land use; Improving water use or availability; Controlling erosion
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P60/00—Technologies relating to agriculture, livestock or agroalimentary industries
- Y02P60/40—Afforestation or reforestation
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Abstract
The invention discloses a low and wet bottomland afforestation method, which comprises the following steps of afforesting in a site of which the annual average underground water level is lower than -80cm and the summer water flooding duration is 0-30 days; taking nanlin95 poplar, nanlin895 poplar and 35 poplar as leading tree species, and taking hybrid willows, pond cypress, Ascendens mucronatum and cypress as auxiliary tree species; afforesting in a site of which the annual average underground water level is -50--20cm and the summer water flooding duration is 15-60 days, taking the Suzhou willow clone as the leading tree species, and taking the pond cypress, the Ascendens mucronatum and the cypress as auxiliary tree species; carrying out artificial field lifting for modifying the land to be suitable for trees because the annual long-term water-flooding site of which the annual average underground water level is higher than -20cm is not suitable for forest trees to grow. The low and wet bottomland afforestation method disclosed by the invention is an economic and efficient afforestation method, the afforestation success rate can be greatly improved, and good economic benefit can be generated.
Description
Technical field
The present invention relates to a kind of low humidity beach method of forestation.
Background technology
Jiangsu Province's Yangzhou are located in In Middle And Lower Reaches of Changjiang River, abundant network of rivers marshland and lakeshore ground are arranged, have that height above sea level is low, subterranean water level is high, have the characteristics such as waterflooding in various degree summer, this be the afforestation work such as Yangzhou shelterbelt construction, muskeg recovery, environmental improvement mainly on the spot.With the Changjiang river beach, compare, lakeshore ground and network of rivers water system marshy is semi-closed state or closed state more, and the mobility of water is less, and groundwater level fluctuation is also less, and subterranean water level is higher, and wind-force is larger, and the wind-fall windbreak is serious.Exist in actual production and manyly because choice of tree species is improper, wait error, failure or the not high phenomenon of economic benefit cause afforesting.
Therefore, need a kind of low humidity beach method of forestation to address the above problem.
Summary of the invention
Goal of the invention: purpose of the present invention is improper for the choice of tree species of low humidity beach in prior art, and cause afforesting failure or the not high defect of economic benefit, provide a kind of low humidity beach method of forestation.
Technical scheme: for achieving the above object, low humidity beach method of forestation of the present invention can adopt following technical scheme:
A kind of low humidity beach method of forestation, the average of the whole year subterranean water level is the on the spot afforestation at 0～30 day lower than-80cm and waterflooding in summer duration, take seeds as the leading factor with Nanlin 95 clone, Nan Lin 895 poplars or 35 poplars, using hybridization willow, Chi Shan ,Zhong mountain China fir or swamp cypress as accessory species; Average of the whole year subterranean water level-50～-20cm and waterflooding in summer duration 15～60 days on the spot on afforestation, take seeds as the leading factor with the Su Liu clone, using pond Shan,Zhong mountain China fir or swamp cypress as accessory species; The average of the whole year subterranean water level on the spot is unsuitable for tree growth higher than-20cm and annual long-term waterflooding, manually lifts field, fits tree with changing.
Beneficial effect: with background technology, compare, low humidity beach method of forestation of the present invention is scientific and reasonable, greatly improves the afforestation success rate, produces larger economic benefit.
Embodiment
Below in conjunction with specific embodiment, further illustrate the present invention, should understand these embodiment only is not used in and limits the scope of the invention for the present invention is described, after having read the present invention, those skilled in the art all fall within the application's claims limited range to the modification of the various equivalent form of values of the present invention.
The investigation ground of the low humidity beach preferential species of tree system of selection in the present invention is positioned at Gaoyou City's domestic (119 ° 25 ' ~ 40 ' E, 32 ° 20 ' ~ 47 ' N), belongs to gentle climatic region, subtropics, 14.7 ℃ of average temperatures of the whole year, the about 1000mm of annual precipitation, low beach along the lake, height above sea level 6 ~ 8m.Soil be take land reclaimed from a lake soil penus as main, accompanies part horse liver soil penus, is light clay, soil organic matter content higher (average out to 1.91%), and available phosphorus contents is 6%, quick-acting potassium content is 153%, pH value 7.0 ~ 7.5.In the network of rivers marshland landforms of going to river be the marsh, shallow river rising in Ningxia and flowing into central Shaanxi that ancient lagoon facies are piled up, height above sea level is 1 ~ 5m, soil pH value 6.8 ~ 7.2, the bulk density of soil 1.2 ~ 1.4g/cm3, glutinous grain content approximately 40%, the average content of the soil organic matter, nitrogenous, phosphorous, exchangeable potassium, exchangeability magnesium is respectively 9.31,0.94,0.33,0.13,0.56g/kg.
Refer to shown in table 1 investigation content and the method for the system of selection of low humidity beach preferential species of tree in the present invention: different time, different location investigation observation content and method are in Table 1.In mid-February, 2009, in Forestry Station nursery, Gaoyou City, more than selecting dry high 4m, more than leading thread 3.5cm, without damage by disease and insect, undamaged biennial root, 1 year dry 95 poplar ratoon, for truncheon, afforest.Repair except after all side shoots, base portion soaks 3～5d, and the degree of depth accounts for absolutely dry high by 1/3～1/2.In late Febuary to mid-March respectively at the loke shores such as canal, Gaoyou Xi Di, Guo Ji Gaoyouhudi, Sanyo's east bank, riverbank truncheon afforestation 67hm
2, the truncheon degree of depth 0.8～1.0m, the having peace of mind of banketing of ground sealing part, seeding row spacing 4m * 6m; Patrol low humidity lakeshore ground, country fair at moment southern side at car and build Su Liu clone osiery 4hm
2, truncheon degree of depth 0.8m, seeding row spacing 3m * 4m; Select same size in each afforestation plot the same period, with 95 Yang Miao of root, and conventional afforestation 1hm
2compare, the planting hole specification is 80cm * 80cm.Set up respectively standard sample ground, in annual December, randomly draw respectively 30 strains, every wood detects the height of tree and the diameter of a cross-section of a tree trunk 1.3 meters above the ground, investigation survival rate (storage rate).Record the afforestation expenses of different method of forestation.
Table 1 investigation content and method
Annotate: Gaoyou City successively met with catastrophic flood damage for 2 times and attacked to September 6-August in 1991 and on June 21st, 2003.
Results and analysis
Different tree species experiences the comparison of different waterflooding time survival rates
From table 2, table 3, table 4, in 34 preferential species of trees investigating in this area, the resistances to overhead flooding injury such as Su Liu clone, weeping willow, willow, Chi Shan, Chinese sweet gum, middle mountain China fir, wet-land pine tree, swamp cypress, golden silk willow, soapberry, alder, purple willow, crape myrtle, Chinese tallow tree are stronger, next is metasequoia, Chinese ash, pear tree, persimmon, the rose of Sharon, plane tree, pomegranate, Chinese scholartree, Buxus sinica, be ginkgo, bedleaf cherry plum, cloves, fragrant camphor tree, glossy privet, spindle tree again, the poor seeds of resistance to overhead flooding injury have cdear, wide yulan, cryptomeria, wax plum, black bamboo.In same seeds, the above the average age for marriage tree resistance to overhead flooding injury of the several years of having planted is better than disaster-stricken new earsh of planting then, and resistance to overhead flooding injury also is negative correlation with waterflooding time, flooding depth simultaneously, with the tree vigo(u)r power, is proportionate.
After table 2 Gaoyou City's Chuan Qing forest farm flood in 1991, common tree survives condition survey
Common tree waterflooding survival rate investigation after table 3 Gaoyou flood in 2003
34 of table 4 this areas waterlogging situation of preferential species of tree
Annotate: in table, 1,2,3,4 mean that the waterlogging degree of seeds reduces successively.
Willow, willow, Chi Shan be at network of rivers marshland, the comparison of lakeshore ground growing state
From table 5, table 6, at throughout the year average subterranean water level-30cm, in summer accumulative total waterflooding number of days is 15～60d, go to river network of rivers marshland and lakeshore ground, behave oneself best with the clonal growth of Su Liu, survival rate [of plantation the highest (reaching 90%～100%), present stronger fast growing proterties, under lakeshore ground land occupation condition, latter the 5th year of afforestation, Su Liu clone, the average diameter of a cross-section of a tree trunk 1.3 meters above the ground reaches 15.3cm, is 2.72 times of same plot 95 poplars (the average diameter of a cross-section of a tree trunk 1.3 meters above the ground 14.5) per hectare standing volume alive.Under the land occupation condition marshy of the inner network of rivers of going to river, the average per hectare volume of timber of 4 years Sheng Suliu clone stands is also 2.85 times of same plot willow, is 1.71 times of Chi Shan.Under two land occupation conditions, the many accumulated waters of soil, willow wind-fall windbreak is serious, and survival rate, storage rate are not high.And at throughout the year average subterranean water level-100cm, under waterflooding in the summer lakeshore ground land occupation condition of 0-15 days, 95 poplar survival rates, storage rate are high, than Su Liu clone, have obvious growth vigor, in the situation that planting density be Su Liu half, its 5 years living per hectares standing volume of living is its 1.2 times.
The raised fields forest land tree growth condition survey of marsh, the network of rivers, forest farm, Yuan Zhangxuan township, table 5 Gaoyou
Annotate: the throughout the year average subterranean water level-30cm of planting site, part plot-20cm, annual accumulative total waterflooding in summer number of days 15～60d, flooding depth 0.2～1.0m; Willow is more because of wind-falls blowdown, preserves rate variance.
Table 6 Su Liu clone, 95 poplars be the growing state under potential condition differently on lakeshore ground
Annotating: afforested in 2007 in this ground, afforestation seedling specification: more than the dry high 3.5m of willow, more than the dry high 4m of willow.The depth of planting 0.8～1.0m.
Cut root truncheon afforestation and be with the comparison of taking root in two kinds of afforestation technologies of seedling afforestation.
As shown in Table 7, willow cuts root truncheon survival rate, amount of growth and conventional afforestation without the significance difference XOR a little more than the latter (afforestation experience in the past).But, because the amount of labour used reduces, make its afforestation investment can save 3542 yuan/hm
2(table 8), every strain cost of forestation is to be with 0.37 of the seedling afforestation mode of taking root in; Simultaneously, also can accelerate the afforestation progress, reduce labor intensity, increase work efficiency and economic benefit.
Survival rate and the amount of growth situation of table 7 95 poplars in 2009 under 2 kinds of afforestation modes
Cost compare under table 82 kinds of afforestation modes in 2009
Annotate: band is taken root in seedling afforestation and is dug cave specification 80cm * 80cm * 80cm, cuts the dark 0.8～10m of root truncheon afforestation truncheon, seeding row spacing 4m * 6m).
Can draw the method for forestation of low humidity beach of the present invention from above:
Stand the investigation of survival rate after the different times waterflooding by 34 of the severely afflicated areas to 2 catastrophic flood damages in this area seeds, filter out 14 of the seeds that resistance to overhead flooding injury is strong, resistance to overhead flooding injury is 9 of seeds preferably, 6 of the general seeds of resistance to overhead flooding injury, 5 of the poor seeds of resistance to overhead flooding injury.In actual afforestation work, should select suitable seeds according to being flooded situation and afforestation purpose in average of the whole year subterranean water level, the summer of afforesting on the spot, accomplish matching species with the site, good to guarantee selected tree growth, Ecological Stabilization.Willow low humidity Beaches ' Underground Water Level is high, water stain harm is serious, when the average of the whole year subterranean water level during lower than-80cm, when the afforestation such as on the spot construction shelter forest, fast-growing and high-yield plantation of of short duration waterflooding (0～30d) is arranged summer, should select that the anti-stain such as Nanlin 95 clone, Nan Lin 895 poplars or 35 poplars evil ability is strong, the obvious improved seeds of fast growing performance are as leading seeds, using and hybridize willow, Chi Shan ,Zhong mountain China fir or swamp cypress etc. as accessory species.When average of the whole year subterranean water level-50～-during 20cm, the Su Liu clone on the spot goes up survival rate the waterflooding time in summer long (15～60d), storage rate is high, growth potential is strong, there is clear superiority, therefore should take seeds as the leading factor with the Su Liu clone, the strong seeds of the resistances to overhead flooding injury such as pond Shan,Zhong mountain China fir or swamp cypress of usining are as accessory species; Simultaneously, use the nursery stock afforestation of large specification can improve survival rate.When in the average of the whole year subterranean water level during higher than-20cm, annual long-term waterflooding on the spot be unsuitable for tree growth, should manually lift field, fit tree with changing, improves on the spot very highly, make it to reach " tree ground " unification.Low humidity beach method of forestation of the present invention is a kind of economy, efficient method of forestation, can greatly improve the afforestation success rate.
Claims (1)
1. a low humidity beach method of forestation, it is characterized in that, the average of the whole year subterranean water level is the on the spot afforestation at 0～30 day lower than-80 cm and waterflooding in summer duration, with Nanlin 95 clone, Nan Lin 895 poplars or 35 poplars, takes seeds as the leading factor, usings hybridization willow, Chi Shan ,Zhong mountain China fir or swamp cypress as accessory species; Average of the whole year subterranean water level-50～-20cm and waterflooding in summer duration 15～60 days on the spot on afforestation, take seeds as the leading factor with the Su Liu clone, using pond Shan,Zhong mountain China fir or swamp cypress as accessory species; The average of the whole year subterranean water level on the spot is unsuitable for tree growth higher than-20cm and annual long-term waterflooding, manually lifts field, fits tree with changing.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104798656A (en) * | 2015-03-24 | 2015-07-29 | 浙江省林业科学研究院 | Weathered bedrock hydro-fluctuation belt land seedling cultivation and water growth tree planting method |
| CN107969275A (en) * | 2017-11-29 | 2018-05-01 | 福建三明林业学校 | Method of forestation under a kind of podocarpus nagi Casuarina equisetifolia Plantation |
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2012
- 2012-06-08 CN CN201210189205XA patent/CN103461065A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104798656A (en) * | 2015-03-24 | 2015-07-29 | 浙江省林业科学研究院 | Weathered bedrock hydro-fluctuation belt land seedling cultivation and water growth tree planting method |
| CN107969275A (en) * | 2017-11-29 | 2018-05-01 | 福建三明林业学校 | Method of forestation under a kind of podocarpus nagi Casuarina equisetifolia Plantation |
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Application publication date: 20131225 |