基于景观变化的河口湿地生态环境需水量研究
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摘要
为了健全辽宁省凌河口湿地生态建设,利用3S技术,结合湿地景观破碎度,采用生态学的计算方法,对1995-2014年凌河口湿地生态环境需水量进行研究。结果表明:(1)1995-2014年,凌河口湿地生态环境需水量分别为3.59、6.19、5.94、8.02和8.46亿m3;(2)1995-2014年湿地景观破碎度程抛物线状,2005年为本研究时段内景观破碎化最严重的一年;(3)研究时段内的适宜生态环境需水量、多年平均降雨下的最小生态环境需水量以及降雨频率分别为75%和95%对应的最小生态环境需水量分别为7.10、3.87、4.11和4.36亿m3;(4)计算出湿地生态环境逐月需水过程。
In order to improve the ecological construction of Linghekou wetland in Liaoning province,this study uses 3 S technology combining with wetland landscape fragmentation and the ecology calculation method to study Eco-environment water requirement of Linghekou wetland from 1995 to 2014. The results indicate that Eco-environment water requirement of Linghekou wetland from 1995 to 2014 are 3.59×108 m3,6.19×108 m3,5.94×108 m3,8.02×108 m3 and 8.46 × 108 m3,respectively; the landscape fragmentation degree of wetland shows parabola trend,and the worst year for landscape fragmentation in this study period is 2005; the optimum Eco-environment water requirement,the Eco-environment water requirement under the average annual rainfall,the rainfall frequency of 75% and 95% is 7.10×108 m3,3.87×108 m3,4.11×108 m3 and 4.36×108 m3,respectively. In the end,the calculation result of monthly Eco-environment water requirement process is presented.
In order to improve the ecological construction of Linghekou wetland in Liaoning province,this study uses 3 S technology combining with wetland landscape fragmentation and the ecology calculation method to study Eco-environment water requirement of Linghekou wetland from 1995 to 2014. The results indicate that Eco-environment water requirement of Linghekou wetland from 1995 to 2014 are 3.59×108 m3,6.19×108 m3,5.94×108 m3,8.02×108 m3 and 8.46 × 108 m3,respectively; the landscape fragmentation degree of wetland shows parabola trend,and the worst year for landscape fragmentation in this study period is 2005; the optimum Eco-environment water requirement,the Eco-environment water requirement under the average annual rainfall,the rainfall frequency of 75% and 95% is 7.10×108 m3,3.87×108 m3,4.11×108 m3 and 4.36×108 m3,respectively. In the end,the calculation result of monthly Eco-environment water requirement process is presented.
引文
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[10]张琬抒,周林飞,成遣.基于3S技术的辽河河口湿地生态环境需水量研究[J].节水灌溉,2017,(3):84-93.
[2]李新香.凌河口湿地科学考察[J].辽宁农业科技,2004,(1):34-35.
[3]刘征涛.基于3S技术的辽宁省凌河口湿地生态环境需水量研究[D].沈阳:沈阳农业大学,2011.
[4]史文杰.莫莫格湿地空间格局变化及生态需水调控研究[D].辽宁大连:大连理工大学,2016.
[5]周静,吴志峰,李定强,等.珠江口两岸耕地景观破碎化定量分析[J].热带地理,2005,25(2):107-110.
[6]刘昌明,王会肖.土壤-作物-大气界面水分过程与节水调控[M].北京:科学出版社,1999:10-18.
[7]丰丽华,王超,李剑超.河流生态与环境用水研究进展[J].河海大学学报,2002,30(3):19-22.
[8]张欣,周林林,李萌,等.辽宁盘锦双台子河口湿地生态环境需水量研究[J].水资源保护,2010,26(4):8-12.
[9]周林飞,徐浩田,张静.凌河口湿地自然保护区景观格局变化及功能区划分[J].湿地科学,2016,14(3):403-407.
[10]张琬抒,周林飞,成遣.基于3S技术的辽河河口湿地生态环境需水量研究[J].节水灌溉,2017,(3):84-93.