黄土高原3个不同降水量地点油松林地水分生产力与土壤干燥化效应模拟

doi:10.11707/j.1001-7488.20101104

林业科学 ›› 2010, Vol. 46 ›› Issue (11): 25-35.doi: 10.11707/j.1001-7488.20101104

黄土高原3个不同降水量地点油松林地水分生产力与土壤干燥化效应模拟

李军^1，2王学春¹邵明安²赵玉娟³李小芳¹

1．西北农林科技大学农学院杨凌712100; 2．中国科学院水利部水土保持研究所杨凌712100; 3．西北农林科技大学资源环境学院杨凌712100

收稿日期:2009-06-29 修回日期:2010-08-27 出版日期:2010-11-25 发布日期:2010-11-25

Simulation of Water-limiting Biomass Productivity of Chinese Pine Plantations and the Soil Desiccation Effect in 3 Sites with Different Annual Precipitation on Loess Plateau

Li Jun^1,2Wang Xuechun¹Shao Mingan²Zhao Yujuan³Li Xiaofang¹

1. College of Agronomy, Northwest A & F UniversityYangling 712100; 2. Institute of Soil and Water Conservation, CAS & MWR Yangling 712100; 3. College of Resources and Environment, Northwest A & F UniversityYangling 712100

Received:2009-06-29 Revised:2010-08-27 Online:2010-11-25 Published:2010-11-25

摘要/Abstract

摘要：

应用WinEPIC模型模拟1957—2001年期间黄土高原半湿润区洛川、半干旱区延安和半干旱偏旱区榆林油松林地水分生产力演变规律和深层土壤干燥化效应。模拟结果表明: 洛川、延安和榆林油松林地逐年生物量模拟值在9～17年生达到最大值（平均值分别为4.29，3.62和2.73 t·hm^-2），之后随降水量年际波动呈现出明显的波动性降低趋势; 1～22年生期间油松林地平均年耗水量高于同期年降水量，导致林地0～10 m土层土壤强烈干燥化，逐月土壤有效含水量波动性降低，洛川14～20年生、延安9～20年生和榆林6～19年生期间是油松林地土壤强烈干燥化阶段，年均土壤干燥化速度分别为176，111和69 mm，此后油松林地土壤有效含水量在0～150 mm范围内的较低水平上随降水量变化而波动; 洛川、延安和榆林油松林地0～10 m土层土壤湿度剖面分布变化剧烈，土壤湿度逐年降低，土壤干层逐年加厚，分别从15，10，6年生开始土壤干层厚度超过3 m，在19年生时均已超过10 m，20年生以后2～10 m土层土壤湿度保持相对稳定的干燥化状态; 洛川、延安和榆林油松林地水分生产力和土壤干燥化效应区域差异显著，林地土壤水分可持续利用年限约30年。

关键词: 黄土高原, 油松林地, 水分生产力, 土壤干燥化, WinEPIC模型

Abstract:

WinEPIC model was used to simulate water productivity and deep soil desiccation of Chinese pine (Pinus tabulaeformis) plantations of Luochuan, a semi-humid region, Yanan, a semi-arid region, and Yulin, a semi-arid prone drought region of the loess plateau in China during 1957－2001. The results showed as the following: in Luochuan,Yanan and Yulin, simulated annual biomass of the 1－45-year-old Chinese pine plantations averaged 4.29, 3.62 and 2.73 t·hm^-2, respectively. Productivity peaked when plantations were 9－17-year-old and then tended to decrease obviously in a pattern that followed the fluctuation of annual rainfall. In 1－22-year-old Chinese pine plantations, average annual water consumptions were higher than annual rainfalls, which resulted in soil drying in 0－10 m depth. The faster soil desiccation occurred in the period of 14－20-year-old plantations of Luochuan, 9－20-year-old plantations of Yanan and 6－19-year-old plantations of Yulin. Soil desiccation rates in Luochuan, Yanan and Yulin were 176, 111 and 69 mm per year, respectively. After that the monthly available water in 0－10 m soil layers fluctuated at a low level in a range of 0－150 mm as annual rainfalls varied in the three sites. The 0－10 m soil humidity profiles sharply varied, with annual declining the humidity and thickening dry soil layers. Dry soil layers exceeded 3 m thick in 15-year-old plantation of Luochuan, 10-year-old plantation of Yanan, and 3-year-old plantation of Yulin. In 19-year-old plantations of the three sites, dry soil layers already exceeded 10 m thick, and in 20－45-year-old plantations the dry soil layers were relatively stable of low humidity in 2－10 m soil layers. There were significant differences in water productivities and soil desiccation effects in the plantations between the three sites, and the soil water could be sustainably used by the Chinese pine plantations on the three sites for about 30 years.

Key words: the loess plateau, Chinese pine(Pinus tabulaeformis) plantations, water productivity, soil desiccation, WinEPIC model

李军;王学春邵明安赵玉娟李小芳. 黄土高原3个不同降水量地点油松林地水分生产力与土壤干燥化效应模拟[J]. 林业科学, 2010, 46(11): 25-35.

Li Jun;Wang XuechunShao MinganZhao YujuanLi Xiaofang. Simulation of Water-limiting Biomass Productivity of Chinese Pine Plantations and the Soil Desiccation Effect in 3 Sites with Different Annual Precipitation on Loess Plateau[J]. Scientia Silvae Sinicae, 2010, 46(11): 25-35.

[1]	李梁, 张建军, 陈宝强, 冯换成, 张守红, 孙若修, 高思远, 张海博, 印家齐. 晋西黄土区长期封禁小流域植被群落动态变化[J]. 林业科学, 2018, 54(2): 1-9.
[2]	王绍飞, 赵西宁, 高晓东, 霍高鹏, 潘燕辉. 黄土丘陵区盛果期苹果树土壤水分利用策略[J]. 林业科学, 2018, 54(10): 31-38.
[3]	王明玉, 王百田. 不同水土保持措施对黄土高原小流域年径流和产沙的影响——以平凉纸坊沟为例[J]. 林业科学, 2016, 52(8): 10-20.
[4]	王安民, 任烨, 王彦辉, 韩芬, 张俊明. 甘肃泾川3种径级刺槐林的冠层截留降雨作用[J]. 林业科学, 2014, 50(3): 16-21.
[5]	彭小平, 樊军, 米美霞, 薛智德. 黄土高原水蚀风蚀交错区不同立地条件下旱柳树干液流差异[J]. 林业科学, 2013, 49(9): 38-45.
[6]	王延平, 韩明玉, 张林森, 毛晨鹏, 雷玉山. 陕西黄土高原苹果园土壤水分分异特征[J]. 林业科学, 2013, 49(7): 16-25.
[7]	张岩;朱岩;张建军;卢路. 林地土壤水分模型SWUF在晋西黄土高原的适用性[J]. 林业科学, 2012, 48(5): 8-14.
[8]	张建国;久米朋宣;大规恭一;山中典和;杜盛. 黄土高原半干旱区辽东栎的树干液流动态[J]. 林业科学, 2011, 47(4): 63-69.
[9]	王乃江;张文辉;同金霞;范少辉;陆元昌;Callie Jo Schweitzer . 黄土高原蔡家川林场森林质量评价[J]. 林业科学, 2010, 46(9): 7-13.
[10]	王迪海;赵忠;李剑;. 黄土高原不同气候区刺槐细根表面积的差异[J]. 林业科学, 2010, 46(5): 70-76.
[11]	胡小宁;赵忠袁志发李剑郭满才王迪海. 黄土高原刺槐细根生长模型的建立[J]. 林业科学, 2010, 46(4): 126-132.
[12]	严俊霞;秦作栋李洪建张义辉. 黄土高原地区柠条人工林土壤呼吸[J]. 林业科学, 2010, 46(3): 1-8.
[13]	胡小宁;;赵忠;袁志发;王迪海;郭满才;李剑. 黄土高原刺槐林细根生长与土壤水分的耦合关系[J]. 林业科学, 2010, 46(12): 30-35.
[14]	于占辉. 陈云明杜盛. 黄土高原半干旱区人工林刺槐展叶期树干液流动态分析*[J]. 林业科学, 2009, 12(4): 53-59.
[15]	陈美玲上官周平;. 黄土高原子午岭林区6个典型群落优势种的热值和养分特征[J]. 林业科学, 2009, 12(3): 140-144.

黄土高原3个不同降水量地点油松林地水分生产力与土壤干燥化效应模拟

Simulation of Water-limiting Biomass Productivity of Chinese Pine Plantations and the Soil Desiccation Effect in 3 Sites with Different Annual Precipitation on Loess Plateau

PDF

可视化

摘要/Abstract

引用本文

使用本文

参考文献

相关文章 15

编辑推荐

Metrics

本文评价

作者中心

期刊获奖

引证指标

联系方式