本文關(guān)鍵詞：水循環(huán)模擬，由筆耕文化傳播整理發(fā)布。

摘要：

干旱半干旱地區(qū)的地下水補(bǔ)給評價在地下水的開發(fā)利用和保護(hù)中起著基礎(chǔ)性的重要作用。本文從全區(qū)域水循環(huán)整體的角度出發(fā)，以水循環(huán)模擬與地下水?dāng)?shù)值模擬緊密耦合的綜合性水文模型 MODCYCLE為工具，以處于半干旱地區(qū)的通遼市平原區(qū)為例，探索地下水在“自然-社會”二元水循環(huán)過程中的補(bǔ)給規(guī)律。結(jié)果表明：通遼市平原區(qū)地下水的主要補(bǔ)給來源為降水入滲，，占總補(bǔ)給量的65.2%；降水入滲補(bǔ)給量與降水量的變化趨勢基本一致，但受眾多因素影響，并不呈線性關(guān)系；年均降水入滲補(bǔ)給量農(nóng)田區(qū)107.3 mm，非農(nóng)田生態(tài)區(qū)29.1 mm，且前者較后者穩(wěn)定；地下水從人口分布較少的平原坨沼區(qū)向社會經(jīng)濟(jì)活動頻繁的中部平原區(qū)側(cè)向凈流動，年均凈流量為6570萬m3，呈逐年下降趨勢。模型反映的地下水補(bǔ)給規(guī)律基本符合研究區(qū)域的客觀情況，可以為當(dāng)?shù)氐叵滤芾硖峁﹨⒖肌Ｔ撛u價方法為類似地區(qū)的地下水研究提供一種可以選擇的方式。

Abstract： 

Groundwater recharge evaluation in arid and semi-arid areas plays a foundational role in the ex?ploitation and protection of the groundwater. In this study, from the perspective of water cycle for the whole region, the law of groundwater recharge is explored in the artificial-natural dual water cycle. The in?tegrated hydrology model named MODCYCLE is used, which is formed by the tightly-coupling of the water cycle model and the groundwater numerical simulation. The groundwater of the plain area in Tongliao, a typical semi-arid region, is evaluated as an example. The analytical results show that (1) the precipitation recharge, 65.2 % of the total recharge, is the main supply source of groundwater;(2) the variation trends of precipitation recharge and precipitation are basically consistent, but influenced by many factors, not a linear relationship;(3) the average annual amount of precipitation recharge in farmland areas (107.3 mm) is larger and more stable than that in non-cropland ecological zones(29.1 mm);(4) the net annual flow amount of groundwater from the dune areas sparsely populated to the central plain areas where the so?cio-economic activities are frequent is 65.7 million m3 and with a declining trend. The law of groundwater reflected by the model is in line with the objective situation in the study area, which can provide a refer?ence for local groundwater management. The method involved in this paper is an alternative way for the groundwater recharge evaluation in similar areas.

  本文關(guān)鍵詞：水循環(huán)模擬，由筆耕文化傳播整理發(fā)布。