On Change of Soil Moisture Distribution With Vegetation Reconstruction in Mu Us Sandy Land of China, With Newly Designed Lysimeter.
On Change of Soil Moisture Distribution With Vegetation Reconstruction in Mu Us Sandy Land of China, With Newly Designed Lysimeter.
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新型蒸渗仪研究毛乌素沙地植被重建土壤水分分布变化
DOI：
10.3389/fpls.2021.609529
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发表时间：
2021
影响因子：
5.6
通讯作者：
Xin Z
中科院分区：
文献类型：
--
作者：
Cheng Y;Yang W;Zhan H;Jiang Q;Shi M;Wang Y;Li X;Xin Z
中国的所谓三北防护林工程(3NSP)在半干旱地区产生了大面积的防护林重建。本研究以雨养樟子松为研究对象。以中国西北部毛乌素沙地东部的蒙古固沙林为例，研究了该地区的生态水文过程。雨量计、新设计的蒸渗仪和土壤湿度传感器被用来监测降雨量、深层土壤补给(DSR)和土壤水分含量，其中DSR专门指可以到达200厘米深并最终补给地下水库的补给。研究表明，PSM森林土壤在年际内存在两个明显的水分补给过程：春季与融雪有关的补给过程和夏季与降水有关的补给过程。一次进水深度可达180厘米，未发生DSR(2018年)。第二个过程在2018年产生了显著的DSR。具体地说，2016-2018年的DSR值分别为1、0.2和1.2毫米。要达到20、40、80、120、160和200厘米的补给深度，所需的降水强度必须分别为2.6、3.2、3.4、8.2、8.2和13.2 mm/d。PSM森林2016年年蒸散量为466.94毫米，2017年为324.60毫米，2018年为183.85毫米。本研究得出结论：在目前的降水条件下(包括干湿两年，如2016年-2018年)，毛乌素沙地的耗水量与降雨量多少是相等的，多年来，毛乌素沙地通过调节蒸散量来响应年降水量的波动。
China’s so-called Three North Shelterbelt Program (3NSP) has produced a vast area of lined forest reconstruction in the semi-arid regions. This study uses the lined rain-fed Pinus sylvestris var. mongolica (PSM) sand-fixing forest in the eastern part of Mu Us Sandy Land in Northwestern China as an example to investigate the ecohydrological process in this region. Rain gauges, newly designed lysimeters and soil moisture sensors are used to monitor precipitation, deep soil recharge (DSR) and soil water content, where DSR specifically refers to recharge that can reach a depth more than 200 cm and eventually replenish the underneath groundwater reservoir. This study shows that there are two obvious moisture recharge processes in an annual base for the PSM forest soil: a snowmelt-related recharge process in the spring and a precipitation-related recharge process in the summer. The recharge depth of the first process can reach 180 cm without DSR occurring (in 2018). The second process results in noticeable DSR in 2018. Specifically, the DSR values over 2016–2018 are 1, 0.2, and 1.2 mm, respectively. To reach the recharge depths of 20, 40, 80, 120, 160, and 200 cm, the required precipitation intensities have to be 2.6, 3.2, 3.4, 8.2, 8.2, and 13.2 mm/d, respectively. The annual evapotranspiration in the PSM forest is 466.94 mm in 2016, 324.60 mm in 2017, and 183.85 mm in 2018. This study concludes that under the current precipitation conditions (including both dry- and wet-years such as 2016–2018), water consumption of PSM somewhat equals to the precipitation amount, and PSM has evolved over years to regulate its evapotranspiration in response to annual precipitation fluctuations in Mu Us Sandy Land of China.
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影响因子：
11.1
作者：
Li, Yurui;Cao, Zhi;Li, Wangjun
通讯作者：
Li, Wangjun
影响因子：
3.2
作者：
Dunkerley, David
通讯作者：
Dunkerley, David
影响因子：
6.7
作者：
Cheng, Yiben;Zhan, Hongbin;Guo, Fuqiang
通讯作者：
Guo, Fuqiang
年补给系数在干旱和半干旱地区是一个有效的概念吗？
影响因子：
6.3
作者：
Cheng, Yiben;Zhan, Hongbin;Li, Wei
通讯作者：
Li, Wei
影响因子：
2.7
作者：
Becerril-Pina, Rocio;Alberto Mastachi-Loza, Carlos;Ba, Khalidou M.
通讯作者：
Ba, Khalidou M.