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In the global food crisis against a background of agricultural biological diversity has become the focus of attention.

在全球粮食危机的背景下，农业生物多样性成为各方关注的焦点。

They are storehouses of biological diversity and endangered species and an essential part of the global ecosystem.

它们是生物多样性和濒危物种的仓库，是全球生态系统的一部分。

South China Sea is a significant area of global biological diversity.

1引言南中国海是具有重要战略意义的海域。

Genetic Algorithms is an adaptive intelligent algorithm about random global search and optimization based on the mechanism of "survival of the fittest" of biological evolutionary theory and population genetics principle.

遗传算法是基于生物进化论的"适者生存"机制和群体遗传学原理而开发出的一种随机全局搜索与优化的自适应智能算法。

Bionic optimization algorithms,simulating the structural characteristics,law of evolution,behavior patterns,and way of thinking of biological or biological population,are computing methods with self-organization,adaptive and self-learning abilities,as well as a good global convergence,parallelism,and robustness.

仿生优化算法是模拟生物或生物种群的结构特点、进化规律、行为模式和思维方法等形成的计算技术和方法，具有自组织、自适应和自我学习能力以及良好的全局收敛性、并行性和鲁棒性等特点。

Account for the spatial variations in vegetation characteristics in the tundra biome at the global scale.

解释全球的苔原生物群落特徵的空间差异。

What is the current status of global biometric market?

什么是现况的全球生物技术市场？

Water and soil resource are important substantial basic of people's subsistence and development,especially are essential conditions of agriculture production, a mass of water and soil loss became a global bionomics question.

水土资源是人类生存和发展的重要物质基础，是进行农业生产的基本条件，大量的水土流失已经成为不可忽视的全球性生态问题。

Land use change is the main research subject of global environmental change and sustainable development, which is affected by both biophysical and human factors at different temporal and spatial scales.

土地利用变化是全球环境变化与可持续发展的重要研究内容，受自然、人文要素在不同时间、空间尺度的相互作用。

This thesis includes three chapters:Chapter 1: The ancient global climate especially the glacial climate in Quaternary and its influence on biota are summarized.

本论文包括三部分：第一章：对全球的古气候特别是第四纪的冰期气候及其对物种的影响进行了概述。

Cynanchum Lingtai apricot production in the average weight 65 grams, the brightly-colored fruit, juicy rich, sweet-sour taste, sweet from the nucleolus, when the late Qing Dynasty famous Shaanxi, Gansu provinces, the Qing imperial court Tongzhi tribute for years.

灵台生产的牛心杏平均单果重65克，果实色泽鲜艳，汁多味浓，甜酸适口，离核仁甜，清末时就驰名陕、甘两省，清同治年间曾为朝廷贡品。

Chenopodium album,Solanum nigrum, and Amaranthus retroflexus were very susceptible to the herbicides. Polygonum persicaria and Abutilon theophrasti were relatively less susceptible to the herbicides, and Lycopersicon esculentum was not susceptible to it. The relationship between reduction rates of weed biomass and PPM values of weed leaves 2,4, and 6 days after treatment was established.

供试的6种杂草对该混剂的敏感性存在显著差异：红心藜Chenopodium album、龙葵Solanum nigrum和反枝苋Amaranthus retroflexus对该混剂最敏感，ED90值分别为47.65、71.67和29.17g/hm2；春蓼Polygonum persicaria和苘麻Abutilon theophrasti敏感，ED90值分别为96.91、114.20g/hm2；而番茄不敏感。