The Temporal and Spatial Variations in Lake Surface Areas in Xinjiang, China
The Temporal and Spatial Variations in Lake Surface Areas in Xinjiang, China
复制标题
中国新疆湖泊面积时空变化
DOI：
10.3390/w10040431
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发表时间：
2018
期刊：
影响因子：
3.4
通讯作者：
Li Weihong
中科院分区：
文献类型：
--
作者：
Liu Yuting;Yang Jing;Chen Yaning;Fang Gonghuan;Li Weihong
在干旱地区，湖泊在维持当地生态、减轻洪水灾害、制约社会经济活动等方面发挥着重要作用。本研究利用多时相卫星资料研究了16个面积超过10 km2的天然湖泊的年变化，根据其地理和气候信息以及它们与气候变量的关系将其划分为6个区域。结果表明，这六个地区湖泊面积的年际变化是不同的。喀纳斯湖由于其典型的U型断面，其面积变化不明显；乌伦古尔湖和吉里湖的面积在20世纪80年代急剧增加，然后略有减少；赛里木湖、艾比湖和博斯腾湖的面积增加后减少，并在21世纪初检测到峰值；巴尔科尔湖和托勒卡勒的面积减少，而位于昆仑山的湖泊面积稳步增加。湖区还显示出与气候变量的各种关系。喀纳斯湖由于湖泊形态的特殊性，面积与气候变量之间没有明显的相关关系；除赛里木湖外，大部分湖泊的面积与年降水量呈正相关。乌伦古尔湖、吉里湖、巴尔科尔湖和Toale Culler的面积与温度呈负相关，而博斯腾湖和昆仑山的湖泊(如Saligil Kollakan湖、阿克赛钦湖和乌鲁库勒湖)的面积与温度呈正相关。
In arid areas, lakes play important roles in sustaining the local ecology, mitigating flood hazard, and restricting economic activity of society. In this study, we used multi-temporal satellite data to study annual variations in 16 natural lakes with individual surface areas over 10 km2, categorized into six regions based on their geographical and climatic information and on their relations with climate variables. Results indicated that annual variations in lake surface areas are different across these six regions. The surface area of Kanas Lake has not obviously changed due to its typical U-shape cross section; the areas of Ulungur Lake and Jili Lake increased sharply in the 1980s and then slightly decreased; the areas of Sayram Lake, Ebinur Lake, and Bosten Lake increased and then decreased, with peaks detected in the early 2000s; the areas of Barkol Lake and Toale Culler decreased, while those of the lakes located in the Kunlun Mountains steadily increased. Lake areas also show various relationships with climate variables. There is no obvious relationship between area and climate variables in Kanas Lake due to the specific lake morphology; the areas of most lakes showed positive correlations with annual precipitation (except Sayram Lake). A negative correlation between area and temperature were detected in Ulungur Lake, Jili Lake, Barkol Lake, and Toale Culler, while positive correlations were suggested in Bosten Lake and the lakes in the Kunlun Mountains (e.g., Saligil Kollakan Lake, Aksai Chin Lake, and Urukkule Lake).