环渤海盐碱地台田季节性脱盐效率与生产效益分析
Seasonal Changes in Desalination Mechanisms and Economic Benefit Analysis on the 'Raised Field-Shallow Pond' in Saline-Alkali Regions around the Bohai Sea
查看参考文献14篇
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文摘
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环渤海滨海地区淡水资源缺乏,季节性旱、涝与盐碱、地下潜水矿质化共生,是该地区农业生产极不稳定的主要原因.本文选择东营地区台田-浅池与黄骅重盐碱地实验台田-浅池为研究对象,采用野外实验与调查问卷相结合的方式,对比分析了两地台田-浅池模式脱盐效率和生产效益.结果表明气候季节性变化导致盐荒地表层盐量变化大,严重影响作物生长发育.台田减轻或遏制了季节性雨热条件变化下的剧烈反盐,耕层全年脱盐效率达58.8%,其中东营沙性土质台田耕层年平均脱盐效率为79.7%,种植棉花产量4500kg/hm~2,与传统利用模式相比增加50%;黄骅台田耕层年平均脱盐效率为37.9%,种植棉花产量3000kg/hm~2.台田浅池模式能起到降盐、稳盐及抗洪调蓄水源的作用.利于环渤海盐碱地粮食产量稳定和土地高效生产.本文研究结果可为环渤海重盐碱地土壤改造、粮食增产、土地综合利用提供重要参考. |
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其他语种文摘
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There are 30 million hectares of saline-alkali soil land in China, accounting for 7% of the total state-owned arable land. Fresh water resources are extremely scarce around the Bohai Sea coastal areas. In addition, droughts, waterlogging, salinity and groundwater mineralization frequently happen over the areas. As a result, agricultural productions for this region are extremely instable in general. In the present work, the land use pattern of the ' raised field-shallow pond' model for agricultural lands in Dongying City, Shandong Province, and heavily saline-alkali land in Huanghua County, Hebei Province were investigated by incorporating field experiments with questionnaire survey. The desalination efficiency and production improvement benefits in the two study sites were compared and analyzed in detail. Results showed that climatic factors often leaded to a significant variation in surface salt in salty wastelands during periods of seasonal changes, which greatly affected the crop growth and development. More salinity in topsoil was accumulated during a short period of hot weather in summer. If precipitation amount was relatively large, surface runoff would result in serious losses of heavily sticky soil due to its poor permeability, which was however contrary to the full desalinization efficiency of salt. It was found that the 'raised field- shallow pond' model can reduce or restrain water and soil loses to some degree, thereby indicating an important role in dramatic salt reductions and in alleviating or eliminating acuity salt accumulation during periods of seasonal rain and heat changes. The desalinization efficiency of the furrow layer in the ' raised field - shallow pond' model was estimated to be roughly 58.8% and the average desalination efficiency of the sandy soil furrow layer of the 'raised field-shallow pond' in Dongying City was about 79.7%. The cotton yield was 4500 kg per hectare; it was increased by 50% compared with the traditional farming mode. The input-output ratio was about 1:3.75. It was also found that the average desalination efficiency of the clay soil furrow layer of the 'raised field-shallow pond in Huanghua County was 37.9%, with showing a cotton yield of 3000 kg per hectare and an input-output ratio of 1:2.5. The 'raised field- shallow pond' plays a prominent role in desalination, salt-stability and water resources regulation and storage during periods of seasonal rain and heat changes. It can also be a field for farming and fishing, providing farmers with productive lands and fishing ponds as well as regulating salt content in infertility lands. This study would offer meaningful reference for soil transformation for heavily saline-alkali lands, grain production improvement, land utilization and eco-economic development around the Bohai Sea coastal areas. |
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来源
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资源科学
,2010,32(3):442-447 【核心库】
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关键词
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盐碱地
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环渤海地区
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台田-浅池模式
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季节性
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脱盐效率
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生产效益
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地址
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北京师范大学地理学与遥感科学学院, 北京, 100875
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语种
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中文 |
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ISSN
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1007-7588 |
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学科
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海洋学 |
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基金
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国家863计划
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文献收藏号
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CSCD:3867102
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参考文献 共
14
共1页
|
|
1.
石元春. 盐渍土研究的现状和发展趋势.
干旱区研究,1986(4):38-44
|
被引
4
次
|
|
|
|
|
2.
刘小京. 环渤海盐碱地区农业资源分布特征与农业持续发展模式初探.
生态农业研究,2002,8(4):67-70
|
被引
1
次
|
|
|
|
|
3.
蔡运龙. 持续农业及其中国态势.
地理学报,1995,50(2):97-106
|
被引
11
次
|
|
|
|
|
4.
Brown LR.
Who Will Feed China? Wake-Up Call for Small Planet,1995
|
被引
4
次
|
|
|
|
|
5.
傅泽强. 中国粮食安全与耕地资源变化的相关分析.
自然资源学报,2001,16(4):312-319
|
被引
1
次
|
|
|
|
|
6.
.
山东省东营市情资料库,2010
|
被引
1
次
|
|
|
|
|
7.
谷孝鸿. 基塘系统改良低洼盐碱地环境效应研究.
环境科学学报,2000,20(5):569-573
|
被引
9
次
|
|
|
|
|
8.
钟功甫.
基塘系统的水陆相互作用,1993
|
被引
10
次
|
|
|
|
|
9.
栾博. 台田景观研究--形态、功能及应用价值的探讨.
城市环境设计,2006(6):26-30
|
被引
1
次
|
|
|
|
|
10.
石元春. 以黄淮海平原为例谈区域资源开发和持续利用.
中国科学院院刊,1994,9(3):239-244
|
被引
3
次
|
|
|
|
|
11.
于长水.
"台池"农业中的界面过程及生态效应--以黄骅地区海冰水农业利用为例,2009
|
被引
2
次
|
|
|
|
|
12.
史同广. 黄河三角洲盐碱地"农基鱼塘"生态农业开发模式.
国土与自然资源研究,1998(3):32-35
|
被引
3
次
|
|
|
|
|
13.
史培军. 渤海海冰作为淡水资源：脱盐机理与可利用价值.
自然资源学报,2002,12(3):353-359
|
被引
38
次
|
|
|
|
|
14.
史培军. 利用AVHRR和MODIS数据测算海冰资源量－－以渤海海冰资源测算为例.
自然资源学报,2002,17(2):138-143
|
被引
32
次
|
|
|
|
|
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