广西发现长306米、60多层楼深的天坑 底部是…
文章来源: 法广 于
- 新闻取自各大新闻媒体,新闻内容并不代表本网立场!
Un gouffre géant abritant une forêt vierge découvert en Chine ©
DS
广西百色市乐业县被发现1个东西方向长306米,南北方向宽150米,最大深度192米的“天坑”。“天坑”底部保存著完好的原始森林系统,无论是“天坑”演化过程各项证据,还是“天坑”形成之后的独特生态系统,都具有很高的科学价值和科普价值。”
中新社报导,中国地质调查局岩溶地质研究所高级工程师张远海表示,经过无人机摄影测量,天坑坑口呈扁椭圆形,容积超过500万立方米,达到“天坑”标准。至此,“世界天坑之都”乐业县的天坑增至30个。
这处新发现的天坑位于乐业县逻西乡平峨村陇坳屯附近。由中国地质调查局岩溶地质研究所、广西702洞穴探险队、乐业飞猫探险队组成的科考探险队于6日前往坑口,沿着悬崖峭壁垂降百米,攀爬数小时后踏足坑底。
广西702洞穴探险队队长陈立新说,探险队员下降至天坑底部,在层迭複杂的巨石下坡缓慢移动,穿越藤蔓交织的浓密地下森林,最终到达天坑底部最低点。朝著天坑顶部集中生长的古树接近40米高,密集的阴生植物快没过肩膀。
张远海说,天坑洞壁保留3个大型洞口,推测是天坑演化早期的洞穴遗迹,天坑底部保存著完好的原始森林系统,掩藏其中的是大量崩塌块石。
乐业县属于中国南方喀斯特典型的岩溶区,是世界最大天坑群—大石围天坑群所在地,此前已发现天坑29个,被誉为“世界天坑之都”。
资料来源:192米深!广西发现巨大天坑,内藏原始森林!这个发现有多重要
-->
`,
"script":[{"type":"text/javascript","src":"//widgets.outbrain.com/outbrain.js","async":"async"}]
}
, "gg_rightside": {
"html":`
`,
"script":[{"type":"text/javascript","src":"//widgets.outbrain.com/outbrain.js","async":"async"}]
}
, "gg_duturandom": {
"html":`
`,
"script":[]
}
, "gg_square": {
"html":`
`,
"script":[]
}
, "gg_topbanner": {
"html":`
`,
"script":[]
}
, "gg_middlesquare": {
"html":`
`,
"script":[]
}
, "gg_dutu": {
"html":`
`,
"script":[]
}
, "gg_botline": {
"html":``,
"script":[]
}
, "gg_dututop": {
"html":`
`,
"script":[]
}
, "gg_shipintop": {
"html":`
`,
"script":[]
}
, "gg_inContent": {
"html":`
`,
"script":[]
}
, "gg_shipinrandom": {
"html":``,
"script":[]
}
, "gg_sideSticky": {
"html":`
`,
"script":[]
}
, "gg_bottombanner": {
"html":`
`,
"script":[{"type":"text/javascript","src":"//widgets.outbrain.com/outbrain.js","async":"async"}]
}
, "gg_marquee": {
"html":`
`,
"script":[]
}
}
const adEnv={
"gg_header": {
"html":``,
"script":[{"type":"text/javascript","exec":` var googletag = googletag || {}; googletag.cmd = googletag.cmd || []; var pbjs = pbjs || {}; pbjs.que = pbjs.que || []; `},{"type":"text/javascript","src":"https://adncdnend.azureedge.net/adn-hb/adn.wnx2.js","async":""},{"type":"text/javascript","src":"https://adncdnend.azureedge.net/adn-video/WenxuecityPlayer.js","async":"async"}]
}
}
const wxcEnv = {
"base":{
"exe":[],
"src":[
{"src": "/news/js/recommendednews.js","defer":"true"},
{"src":"/js/wxcFunc.js","defer":"true"}
]
},
"func":{
"exe":[
//展示评论
'function showMoreComments(){let n = 8;for(let i=0;i
2){dom.hide();}}$("#showallcomment").show();$("#showlesscomment").hide();};hideComments();',
],
"src":[
//图片,搜索,QR code
{"src": "/news/js/view.js?v=05132024"},
//计数器
{"src":"//count.wenxuecity.com/service/count/script/do.php?type=news&id=11567941&n=0&out=jsval","defer":"true"},
]
}
}
function wxcCode(){
wxcEnv.base.exe.forEach(x=>{
let tag = buildAdcode(x);
document.head.append(tag);
})
wxcEnv.base.src.forEach(src => {
let tag = buildSrc(src)
document.head.append(tag);
});
wxcEnv.func.exe.forEach(x=>{
let tag = buildAdcode(x);
document.body.append(tag);
})
wxcEnv.func.src.forEach(src => {
let tag = buildSrc(src)
document.body.append(tag);
});
}
function adcode(){
let adkey = Object.keys(ads);
adkey.forEach(x=>{
let code = ads[x].html;
let div = document.getElementById(x);
if(div)div.innerHTML = code;
ads[x].script.forEach(s=>{
if(Object.keys(s).indexOf('src')===-1){
let tag = buildAdcode(s.exec);
document.body.append(tag);
}else{
let tag = buildSrc(s);
document.body.append(tag);
}
})
})
}
function baseCode(){
let baseKeys = Object.keys(adEnv);
baseKeys.forEach(x=>{
adEnv[x].script.forEach(s=>{
if(Object.keys(s).indexOf('src')===-1){
let tag = buildAdcode(s.exec);
document.head.append(tag);
}else{
let tag = buildSrc(s);
document.head.append(tag);
}
})
})
}
function buildAdcode(script){
let tag = document.createElement('script');
tag.innerHTML = script;
return tag;
}
function buildSrc(obj){
let keys = Object.keys(obj);
let tag = document.createElement("script");
keys.forEach(key=>{
tag.setAttribute(key, obj[key]);
})
return tag ;
}