Subjects: Management Science >> Science ology and Management submitted time 2023-07-09 Cooperative journals: 《中国科学院院刊》
Abstract： In September 2022, the President of the People’s Republic of China visited Uzbekistan for the first time after the epidemic. In the subsequent joint statement between China and Uzbekistan, China welcomed the adoption of the Aral Sea initiative proposed by Uzbekistan at the General Assembly of the United Nations. The two sides expressed their willingness to actively promote synergy between the Global Development Initiative and projects related to improving the ecological, economic, and social environment of the Aral Sea region under the framework of the United Nations. In this context, this paper describes the current situation of the Aral Sea crisis with a quantitative method and summarizes the necessity and significance of China’s participation in the ecological governance of the Aral Sea using the literature analysis method. The author believes that China has favorable conditions in terms of policies and mechanisms, funds, talents and cooperation foundation in participating in the ecological governance of the Aral Sea, and suggests that under the principle of win-win cooperation, overall coordination, and doing something and leaving something undone, starting from exploring scientific issues and improving people’s livelihood, taking desertification combating, water and soil conservation, modern agricultural technology, and the promotion and utilization of new energy as the starting point, and using China’s wisdom, experience and strength in participating in the ecological governance of the Aral Sea, promoting the development of the green Aral Sea, effectively deepening China’s scientific and technological cooperation with Central Asia, and providing scientific and technological support for the construction of a community with a shared future for China-Central Asia and even high-quality development of the Belt and Road.
Subjects: Geosciences >> Geography submitted time 2020-01-06 Cooperative journals: 《干旱区地理》
Abstract：采用时空转化的方法研究了滴灌条件下不同盐地碱蓬种植年限（0 a、1 a、2 a和3 a）对重度盐碱地土壤盐分及盐离子在0~120 cm土壤剖面的分布特征的影响，为盐地碱蓬在盐碱地中的改良利用提供理论依据。试验结果表明：滴灌种植盐地碱蓬后土壤盐分在剖面的分布发生明显变化，根区（0~40 cm）土壤含盐量随种植年限增加而下降，根底（40~120 cm）土壤则先增加后下降；Na+和Cl-因容易被水淋洗和植物选择性吸收多，根区土壤中Na+和Cl-含量随种植年限增加有显著降低，Ca2+和SO42-不易随水移动，淋洗程度低，HCO3-和Mg2+第2 a和第3 a的淋洗效果明显好于第1 a；经过3 a种植后土壤中毒害离子Na+与Cl-和在表层盐分组成中的比例下降，Ca2+比例上升，钠吸附比（SAR）值显著降低。
Subjects: Geosciences >> Other Disciplines of Geosciences submitted time 2019-09-10 Cooperative journals: 《干旱区研究》
Abstract：新疆是中国最大盐土分布区，盐生植物资源极为丰富且具有较强的吸盐聚盐能力。以盐角草（Salicornia europaea）为材料，研究炭化温度和时间对盐角草的生物炭产率及理化特性的影响。结果表明：炭化能有效增加盐角草pH、EC(电导率）和灰分含量，其中生物炭pH最高达10.37，生物炭灰分含量与盐角草灰分含量相比增加了57.51%~110.98%。在300~600 ℃，随着炭化温度的升高，生物炭pH、EC、灰分含量显著增加，而产率降低；生物炭水溶性Ca2+、Mg2+含量随温度（≥400 ℃）降低，Na+、K+等低价离子富集；生物炭全钾、全磷含量随温度逐渐增加，全碳、全氮含量则降低。随着炭化时间的增加，pH、EC及灰分含量逐渐升高，碳含量逐渐降低，且水溶性离子含量增加。根据生物炭理化特性，炭化时间2 h为最适宜的炭化时间。该研究可为生物炭改良酸性土壤原料选择以及植物生物炭制备工艺优化提供新途径。
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